{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-48875", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-01-09T09:51:32.472Z", "datePublished": "2025-01-11T12:25:16.981Z", "dateUpdated": "2025-10-01T19:57:22.119Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:39:18.957Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't take dev_replace rwsem on task already holding it\n\nRunning fstests btrfs/011 with MKFS_OPTIONS=\"-O rst\" to force the usage of\nthe RAID stripe-tree, we get the following splat from lockdep:\n\n BTRFS info (device sdd): dev_replace from /dev/sdd (devid 1) to /dev/sdb started\n\n ============================================\n WARNING: possible recursive locking detected\n 6.11.0-rc3-btrfs-for-next #599 Not tainted\n --------------------------------------------\n btrfs/2326 is trying to acquire lock:\n ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\n\n but task is already holding lock:\n ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\n\n other info that might help us debug this:\n Possible unsafe locking scenario:\n\n CPU0\n ----\n lock(&fs_info->dev_replace.rwsem);\n lock(&fs_info->dev_replace.rwsem);\n\n *** DEADLOCK ***\n\n May be due to missing lock nesting notation\n\n 1 lock held by btrfs/2326:\n #0: ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\n\n stack backtrace:\n CPU: 1 UID: 0 PID: 2326 Comm: btrfs Not tainted 6.11.0-rc3-btrfs-for-next #599\n Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\n Call Trace:\n <TASK>\n dump_stack_lvl+0x5b/0x80\n __lock_acquire+0x2798/0x69d0\n ? __pfx___lock_acquire+0x10/0x10\n ? __pfx___lock_acquire+0x10/0x10\n lock_acquire+0x19d/0x4a0\n ? btrfs_map_block+0x39f/0x2250\n ? __pfx_lock_acquire+0x10/0x10\n ? find_held_lock+0x2d/0x110\n ? lock_is_held_type+0x8f/0x100\n down_read+0x8e/0x440\n ? btrfs_map_block+0x39f/0x2250\n ? __pfx_down_read+0x10/0x10\n ? do_raw_read_unlock+0x44/0x70\n ? _raw_read_unlock+0x23/0x40\n btrfs_map_block+0x39f/0x2250\n ? btrfs_dev_replace_by_ioctl+0xd69/0x1d00\n ? btrfs_bio_counter_inc_blocked+0xd9/0x2e0\n ? __kasan_slab_alloc+0x6e/0x70\n ? __pfx_btrfs_map_block+0x10/0x10\n ? __pfx_btrfs_bio_counter_inc_blocked+0x10/0x10\n ? kmem_cache_alloc_noprof+0x1f2/0x300\n ? mempool_alloc_noprof+0xed/0x2b0\n btrfs_submit_chunk+0x28d/0x17e0\n ? __pfx_btrfs_submit_chunk+0x10/0x10\n ? bvec_alloc+0xd7/0x1b0\n ? bio_add_folio+0x171/0x270\n ? __pfx_bio_add_folio+0x10/0x10\n ? __kasan_check_read+0x20/0x20\n btrfs_submit_bio+0x37/0x80\n read_extent_buffer_pages+0x3df/0x6c0\n btrfs_read_extent_buffer+0x13e/0x5f0\n read_tree_block+0x81/0xe0\n read_block_for_search+0x4bd/0x7a0\n ? __pfx_read_block_for_search+0x10/0x10\n btrfs_search_slot+0x78d/0x2720\n ? __pfx_btrfs_search_slot+0x10/0x10\n ? lock_is_held_type+0x8f/0x100\n ? kasan_save_track+0x14/0x30\n ? __kasan_slab_alloc+0x6e/0x70\n ? kmem_cache_alloc_noprof+0x1f2/0x300\n btrfs_get_raid_extent_offset+0x181/0x820\n ? __pfx_lock_acquire+0x10/0x10\n ? __pfx_btrfs_get_raid_extent_offset+0x10/0x10\n ? down_read+0x194/0x440\n ? __pfx_down_read+0x10/0x10\n ? do_raw_read_unlock+0x44/0x70\n ? _raw_read_unlock+0x23/0x40\n btrfs_map_block+0x5b5/0x2250\n ? __pfx_btrfs_map_block+0x10/0x10\n scrub_submit_initial_read+0x8fe/0x11b0\n ? __pfx_scrub_submit_initial_read+0x10/0x10\n submit_initial_group_read+0x161/0x3a0\n ? lock_release+0x20e/0x710\n ? __pfx_submit_initial_group_read+0x10/0x10\n ? __pfx_lock_release+0x10/0x10\n scrub_simple_mirror.isra.0+0x3eb/0x580\n scrub_stripe+0xe4d/0x1440\n ? lock_release+0x20e/0x710\n ? __pfx_scrub_stripe+0x10/0x10\n ? __pfx_lock_release+0x10/0x10\n ? do_raw_read_unlock+0x44/0x70\n ? _raw_read_unlock+0x23/0x40\n scrub_chunk+0x257/0x4a0\n scrub_enumerate_chunks+0x64c/0xf70\n ? __mutex_unlock_slowpath+0x147/0x5f0\n ? __pfx_scrub_enumerate_chunks+0x10/0x10\n ? bit_wait_timeout+0xb0/0x170\n ? __up_read+0x189/0x700\n ? scrub_workers_get+0x231/0x300\n ? up_write+0x490/0x4f0\n btrfs_scrub_dev+0x52e/0xcd0\n ? create_pending_snapshots+0x230/0x250\n ? __pfx_btrfs_scrub_dev+0x10/0x10\n btrfs_dev_replace_by_ioctl+0xd69/0x1d00\n ? lock_acquire+0x19d/0x4a0\n ? __pfx_btrfs_dev_replace_by_ioctl+0x10/0x10\n ?\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/dev-replace.c", "fs/btrfs/fs.h", "fs/btrfs/volumes.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a5bc4e030f50fdbb1fbc69acc1e0c5f57c79d044", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a2e99dcd7aafa9d474f7d9b0740b8f93c4e156c2", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "8cca35cb29f81eba3e96ec44dad8696c8a2f9138", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/dev-replace.c", "fs/btrfs/fs.h", "fs/btrfs/volumes.c"], "versions": [{"version": "6.6.66", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.5", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.6.66"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a5bc4e030f50fdbb1fbc69acc1e0c5f57c79d044"}, {"url": "https://git.kernel.org/stable/c/a2e99dcd7aafa9d474f7d9b0740b8f93c4e156c2"}, {"url": "https://git.kernel.org/stable/c/8cca35cb29f81eba3e96ec44dad8696c8a2f9138"}], "title": "btrfs: don't take dev_replace rwsem on task already holding it", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-48875", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-01T19:55:40.762435Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-667", "description": "CWE-667 Improper Locking"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:57:22.119Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-48875", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-01-09T09:51:32.472Z", "datePublished": "2025-01-11T12:25:16.981Z", "dateUpdated": "2025-05-04T09:39:18.957Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:39:18.957Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't take dev_replace rwsem on task already holding it\n\nRunning fstests btrfs/011 with MKFS_OPTIONS=\"-O rst\" to force the usage of\nthe RAID stripe-tree, we get the following splat from lockdep:\n\n BTRFS info (device sdd): dev_replace from /dev/sdd (devid 1) to /dev/sdb started\n\n ============================================\n WARNING: possible recursive locking detected\n 6.11.0-rc3-btrfs-for-next #599 Not tainted\n --------------------------------------------\n btrfs/2326 is trying to acquire lock:\n ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\n\n but task is already holding lock:\n ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\n\n other info that might help us debug this:\n Possible unsafe locking scenario:\n\n CPU0\n ----\n lock(&fs_info->dev_replace.rwsem);\n lock(&fs_info->dev_replace.rwsem);\n\n *** DEADLOCK ***\n\n May be due to missing lock nesting notation\n\n 1 lock held by btrfs/2326:\n #0: ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\n\n stack backtrace:\n CPU: 1 UID: 0 PID: 2326 Comm: btrfs Not tainted 6.11.0-rc3-btrfs-for-next #599\n Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\n Call Trace:\n <TASK>\n dump_stack_lvl+0x5b/0x80\n __lock_acquire+0x2798/0x69d0\n ? __pfx___lock_acquire+0x10/0x10\n ? __pfx___lock_acquire+0x10/0x10\n lock_acquire+0x19d/0x4a0\n ? btrfs_map_block+0x39f/0x2250\n ? __pfx_lock_acquire+0x10/0x10\n ? find_held_lock+0x2d/0x110\n ? lock_is_held_type+0x8f/0x100\n down_read+0x8e/0x440\n ? btrfs_map_block+0x39f/0x2250\n ? __pfx_down_read+0x10/0x10\n ? do_raw_read_unlock+0x44/0x70\n ? _raw_read_unlock+0x23/0x40\n btrfs_map_block+0x39f/0x2250\n ? btrfs_dev_replace_by_ioctl+0xd69/0x1d00\n ? btrfs_bio_counter_inc_blocked+0xd9/0x2e0\n ? __kasan_slab_alloc+0x6e/0x70\n ? __pfx_btrfs_map_block+0x10/0x10\n ? __pfx_btrfs_bio_counter_inc_blocked+0x10/0x10\n ? kmem_cache_alloc_noprof+0x1f2/0x300\n ? mempool_alloc_noprof+0xed/0x2b0\n btrfs_submit_chunk+0x28d/0x17e0\n ? __pfx_btrfs_submit_chunk+0x10/0x10\n ? bvec_alloc+0xd7/0x1b0\n ? bio_add_folio+0x171/0x270\n ? __pfx_bio_add_folio+0x10/0x10\n ? __kasan_check_read+0x20/0x20\n btrfs_submit_bio+0x37/0x80\n read_extent_buffer_pages+0x3df/0x6c0\n btrfs_read_extent_buffer+0x13e/0x5f0\n read_tree_block+0x81/0xe0\n read_block_for_search+0x4bd/0x7a0\n ? __pfx_read_block_for_search+0x10/0x10\n btrfs_search_slot+0x78d/0x2720\n ? __pfx_btrfs_search_slot+0x10/0x10\n ? lock_is_held_type+0x8f/0x100\n ? kasan_save_track+0x14/0x30\n ? __kasan_slab_alloc+0x6e/0x70\n ? kmem_cache_alloc_noprof+0x1f2/0x300\n btrfs_get_raid_extent_offset+0x181/0x820\n ? __pfx_lock_acquire+0x10/0x10\n ? __pfx_btrfs_get_raid_extent_offset+0x10/0x10\n ? down_read+0x194/0x440\n ? __pfx_down_read+0x10/0x10\n ? do_raw_read_unlock+0x44/0x70\n ? _raw_read_unlock+0x23/0x40\n btrfs_map_block+0x5b5/0x2250\n ? __pfx_btrfs_map_block+0x10/0x10\n scrub_submit_initial_read+0x8fe/0x11b0\n ? __pfx_scrub_submit_initial_read+0x10/0x10\n submit_initial_group_read+0x161/0x3a0\n ? lock_release+0x20e/0x710\n ? __pfx_submit_initial_group_read+0x10/0x10\n ? __pfx_lock_release+0x10/0x10\n scrub_simple_mirror.isra.0+0x3eb/0x580\n scrub_stripe+0xe4d/0x1440\n ? lock_release+0x20e/0x710\n ? __pfx_scrub_stripe+0x10/0x10\n ? __pfx_lock_release+0x10/0x10\n ? do_raw_read_unlock+0x44/0x70\n ? _raw_read_unlock+0x23/0x40\n scrub_chunk+0x257/0x4a0\n scrub_enumerate_chunks+0x64c/0xf70\n ? __mutex_unlock_slowpath+0x147/0x5f0\n ? __pfx_scrub_enumerate_chunks+0x10/0x10\n ? bit_wait_timeout+0xb0/0x170\n ? __up_read+0x189/0x700\n ? scrub_workers_get+0x231/0x300\n ? up_write+0x490/0x4f0\n btrfs_scrub_dev+0x52e/0xcd0\n ? create_pending_snapshots+0x230/0x250\n ? __pfx_btrfs_scrub_dev+0x10/0x10\n btrfs_dev_replace_by_ioctl+0xd69/0x1d00\n ? lock_acquire+0x19d/0x4a0\n ? __pfx_btrfs_dev_replace_by_ioctl+0x10/0x10\n ?\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/dev-replace.c", "fs/btrfs/fs.h", "fs/btrfs/volumes.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a5bc4e030f50fdbb1fbc69acc1e0c5f57c79d044", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a2e99dcd7aafa9d474f7d9b0740b8f93c4e156c2", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "8cca35cb29f81eba3e96ec44dad8696c8a2f9138", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/dev-replace.c", "fs/btrfs/fs.h", "fs/btrfs/volumes.c"], "versions": [{"version": "6.6.66", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.5", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.6.66"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a5bc4e030f50fdbb1fbc69acc1e0c5f57c79d044"}, {"url": "https://git.kernel.org/stable/c/a2e99dcd7aafa9d474f7d9b0740b8f93c4e156c2"}, {"url": "https://git.kernel.org/stable/c/8cca35cb29f81eba3e96ec44dad8696c8a2f9138"}], "title": "btrfs: don't take dev_replace rwsem on task already holding it", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-48875", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-01T19:55:40.762435Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-667", "description": "CWE-667 Improper Locking"}]}], "providerMetadata": {"shortName": "CISA-ADP", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "dateUpdated": "2025-10-01T15:52:44.261Z"}, "title": "CISA ADP Vulnrichment"}]}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "90A079EF-8212-45DF-84FB-C525A64635B0", "versionEndExcluding": "6.6.66", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9501D045-7A94-42CA-8B03-821BE94A65B7", "versionEndExcluding": "6.12.5", "versionStartIncluding": "6.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't take dev_replace rwsem on task already holding it\n\nRunning fstests btrfs/011 with MKFS_OPTIONS=\"-O rst\" to force the usage of\nthe RAID stripe-tree, we get the following splat from lockdep:\n\n BTRFS info (device sdd): dev_replace from /dev/sdd (devid 1) to /dev/sdb started\n\n ============================================\n WARNING: possible recursive locking detected\n 6.11.0-rc3-btrfs-for-next #599 Not tainted\n --------------------------------------------\n btrfs/2326 is trying to acquire lock:\n ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\n\n but task is already holding lock:\n ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\n\n other info that might help us debug this:\n Possible unsafe locking scenario:\n\n CPU0\n ----\n lock(&fs_info->dev_replace.rwsem);\n lock(&fs_info->dev_replace.rwsem);\n\n *** DEADLOCK ***\n\n May be due to missing lock nesting notation\n\n 1 lock held by btrfs/2326:\n #0: ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\n\n stack backtrace:\n CPU: 1 UID: 0 PID: 2326 Comm: btrfs Not tainted 6.11.0-rc3-btrfs-for-next #599\n Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\n Call Trace:\n <TASK>\n dump_stack_lvl+0x5b/0x80\n __lock_acquire+0x2798/0x69d0\n ? __pfx___lock_acquire+0x10/0x10\n ? __pfx___lock_acquire+0x10/0x10\n lock_acquire+0x19d/0x4a0\n ? btrfs_map_block+0x39f/0x2250\n ? __pfx_lock_acquire+0x10/0x10\n ? find_held_lock+0x2d/0x110\n ? lock_is_held_type+0x8f/0x100\n down_read+0x8e/0x440\n ? btrfs_map_block+0x39f/0x2250\n ? __pfx_down_read+0x10/0x10\n ? do_raw_read_unlock+0x44/0x70\n ? _raw_read_unlock+0x23/0x40\n btrfs_map_block+0x39f/0x2250\n ? btrfs_dev_replace_by_ioctl+0xd69/0x1d00\n ? btrfs_bio_counter_inc_blocked+0xd9/0x2e0\n ? __kasan_slab_alloc+0x6e/0x70\n ? __pfx_btrfs_map_block+0x10/0x10\n ? __pfx_btrfs_bio_counter_inc_blocked+0x10/0x10\n ? kmem_cache_alloc_noprof+0x1f2/0x300\n ? mempool_alloc_noprof+0xed/0x2b0\n btrfs_submit_chunk+0x28d/0x17e0\n ? __pfx_btrfs_submit_chunk+0x10/0x10\n ? bvec_alloc+0xd7/0x1b0\n ? bio_add_folio+0x171/0x270\n ? __pfx_bio_add_folio+0x10/0x10\n ? __kasan_check_read+0x20/0x20\n btrfs_submit_bio+0x37/0x80\n read_extent_buffer_pages+0x3df/0x6c0\n btrfs_read_extent_buffer+0x13e/0x5f0\n read_tree_block+0x81/0xe0\n read_block_for_search+0x4bd/0x7a0\n ? __pfx_read_block_for_search+0x10/0x10\n btrfs_search_slot+0x78d/0x2720\n ? __pfx_btrfs_search_slot+0x10/0x10\n ? lock_is_held_type+0x8f/0x100\n ? kasan_save_track+0x14/0x30\n ? __kasan_slab_alloc+0x6e/0x70\n ? kmem_cache_alloc_noprof+0x1f2/0x300\n btrfs_get_raid_extent_offset+0x181/0x820\n ? __pfx_lock_acquire+0x10/0x10\n ? __pfx_btrfs_get_raid_extent_offset+0x10/0x10\n ? down_read+0x194/0x440\n ? __pfx_down_read+0x10/0x10\n ? do_raw_read_unlock+0x44/0x70\n ? _raw_read_unlock+0x23/0x40\n btrfs_map_block+0x5b5/0x2250\n ? __pfx_btrfs_map_block+0x10/0x10\n scrub_submit_initial_read+0x8fe/0x11b0\n ? __pfx_scrub_submit_initial_read+0x10/0x10\n submit_initial_group_read+0x161/0x3a0\n ? lock_release+0x20e/0x710\n ? __pfx_submit_initial_group_read+0x10/0x10\n ? __pfx_lock_release+0x10/0x10\n scrub_simple_mirror.isra.0+0x3eb/0x580\n scrub_stripe+0xe4d/0x1440\n ? lock_release+0x20e/0x710\n ? __pfx_scrub_stripe+0x10/0x10\n ? __pfx_lock_release+0x10/0x10\n ? do_raw_read_unlock+0x44/0x70\n ? _raw_read_unlock+0x23/0x40\n scrub_chunk+0x257/0x4a0\n scrub_enumerate_chunks+0x64c/0xf70\n ? __mutex_unlock_slowpath+0x147/0x5f0\n ? __pfx_scrub_enumerate_chunks+0x10/0x10\n ? bit_wait_timeout+0xb0/0x170\n ? __up_read+0x189/0x700\n ? scrub_workers_get+0x231/0x300\n ? up_write+0x490/0x4f0\n btrfs_scrub_dev+0x52e/0xcd0\n ? create_pending_snapshots+0x230/0x250\n ? __pfx_btrfs_scrub_dev+0x10/0x10\n btrfs_dev_replace_by_ioctl+0xd69/0x1d00\n ? lock_acquire+0x19d/0x4a0\n ? __pfx_btrfs_dev_replace_by_ioctl+0x10/0x10\n ?\n---truncated---"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: no tome dev_replace rwsem en la tarea que ya lo contiene Al ejecutar fstests btrfs/011 con MKFS_OPTIONS=\"-O rst\" para forzar el uso del \u00e1rbol de bandas RAID, obtenemos el siguiente mensaje de lockdep: Informaci\u00f3n de BTRFS (dispositivo sdd): dev_replace de /dev/sdd (devid 1) a /dev/sdb iniciado ============================================ ADVERTENCIA: se detect\u00f3 un posible bloqueo recursivo 6.11.0-rc3-btrfs-for-next #599 No contaminado -------------------------------------------- btrfs/2326 est\u00e1 intentando adquirir el bloqueo: ffff88810f215c98 (&amp;fs_info-&gt;dev_replace.rwsem){++++}-{3:3}, en: btrfs_map_block+0x39f/0x2250 pero la tarea ya tiene el bloqueo: ffff88810f215c98 (&amp;fs_info-&gt;dev_replace.rwsem){++++}-{3:3}, en: btrfs_map_block+0x39f/0x2250 otra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto: Posible escenario de bloqueo inseguro: CPU0 ---- lock(&amp;fs_info-&gt;dev_replace.rwsem); lock(&amp;fs_info-&gt;dev_replace.rwsem); *** BLOQUEO INTERMEDIO *** Puede deberse a la falta de notaci\u00f3n de anidamiento de bloqueo 1 bloqueo mantenido por btrfs/2326: #0: ffff88810f215c98 (&amp;fs_info-&gt;dev_replace.rwsem){++++}-{3:3}, en: btrfs_map_block+0x39f/0x2250 seguimiento de pila: CPU: 1 UID: 0 PID: 2326 Comm: btrfs No contaminado 6.11.0-rc3-btrfs-for-next #599 Nombre del hardware: Bochs Bochs, BIOS Bochs 01/01/2011 Seguimiento de llamadas: dump_stack_lvl+0x5b/0x80 __lock_acquire+0x2798/0x69d0 ? __pfx___lock_acquire+0x10/0x10 ? __pfx___lock_acquire+0x10/0x10 lock_acquire+0x19d/0x4a0 ? btrfs_map_block+0x39f/0x2250 ? __pfx_lock_acquire+0x10/0x10 ? find_held_lock+0x2d/0x110 ? lock_is_held_type+0x8f/0x100 down_read+0x8e/0x440 ? btrfs_map_block+0x39f/0x2250 ? __pfx_down_read+0x10/0x10 ? do_raw_read_unlock+0x44/0x70 ? kmem_cache_alloc_noprof+0x1f2/0x300 ? bvec_alloc+0xd7/0x1b0 ? bio_add_folio+0x171/0x270 ? __pfx_bio_add_folio+0x10/0x10 ? __kasan_check_read+0x20/0x20 btrfs_submit_bio+0x37/0x80 lectura_extensi\u00f3n_b\u00fafer_p\u00e1ginas+0x3df/0x6c0 btrfs_lectura_extensi\u00f3n_b\u00fafer+0x13e/0x5f0 lectura_\u00e1rbol_bloque+0x81/0xe0 lectura_bloque_para_b\u00fasqueda+0x4bd/0x7a0 ? __pfx_lectura_bloque_para_b\u00fasqueda+0x10/0x10 btrfs_b\u00fasqueda_slot+0x78d/0x2720 ? __pfx_btrfs_b\u00fasqueda_slot+0x10/0x10 ? bloqueo_se_retiene_tipo+0x8f/0x100 ? kasan_guardar_pista+0x14/0x30 ? __kasan_slab_alloc+0x6e/0x70 ? kmem_cache_alloc_noprof+0x1f2/0x300 btrfs_get_raid_extent_offset+0x181/0x820 ? __pfx_lock_acquire+0x10/0x10 ? __pfx_btrfs_get_raid_extent_offset+0x10/0x10 ? down_read+0x194/0x440 ? __pfx_down_read+0x10/0x10 ? do_raw_read_unlock+0x44/0x70 ? _raw_read_unlock+0x23/0x40 btrfs_map_block+0x5b5/0x2250 ? liberaci\u00f3n de bloqueo+0x20e/0x710 ? __pfx_scrub_stripe+0x10/0x10 ? __pfx_lock_release+0x10/0x10 ? hacer_desbloqueo_lectura_sin_encriptar+0x44/0x70 ? _desbloqueo_lectura_sin_encriptar+0x23/0x40 fragmento_de_scruzamiento+0x257/0x4a0 fragmento_de_scruzamiento_enumerar+0x64c/0xf70 ? __mutex_unlock_slowpath+0x147/0x5f0 ? __pfx_scrub_enumerar_chunks+0x10/0x10 ? tiempo_de_espera_bit+0xb0/0x170 ? __up_read+0x189/0x700 ? obtenci\u00f3n_trabajadores_de_scruzamiento+0x231/0x300 ? up_write+0x490/0x4f0 btrfs_scrub_dev+0x52e/0xcd0 ? create_pending_snapshots+0x230/0x250 ? __pfx_btrfs_scrub_dev+0x10/0x10 btrfs_dev_replace_by_ioctl+0xd69/0x1d00 ? lock_acquire+0x19d/0x4a0 ? __pfx_btrfs_dev_replace_by_ioctl+0x10/0x10 ? ---truncado---"}], "id": "CVE-2024-48875", "lastModified": "2025-10-01T20:17:15.937", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-01-11T13:15:22.933", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8cca35cb29f81eba3e96ec44dad8696c8a2f9138"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a2e99dcd7aafa9d474f7d9b0740b8f93c4e156c2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a5bc4e030f50fdbb1fbc69acc1e0c5f57c79d044"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-667"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: btrfs: don't take dev_replace rwsem on task already holding it", "id": "2337093", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2337093"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-667", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: don't take dev_replace rwsem on task already holding it\nRunning fstests btrfs/011 with MKFS_OPTIONS=\"-O rst\" to force the usage of\nthe RAID stripe-tree, we get the following splat from lockdep:\nBTRFS info (device sdd): dev_replace from /dev/sdd (devid 1) to /dev/sdb started\n============================================\nWARNING: possible recursive locking detected\n6.11.0-rc3-btrfs-for-next #599 Not tainted\n--------------------------------------------\nbtrfs/2326 is trying to acquire lock:\nffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\nbut task is already holding lock:\nffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\nother info that might help us debug this:\nPossible unsafe locking scenario:\nCPU0\n----\nlock(&fs_info->dev_replace.rwsem);\nlock(&fs_info->dev_replace.rwsem);\n*** DEADLOCK ***\nMay be due to missing lock nesting notation\n1 lock held by btrfs/2326:\n#0: ffff88810f215c98 (&fs_info->dev_replace.rwsem){++++}-{3:3}, at: btrfs_map_block+0x39f/0x2250\nstack backtrace:\nCPU: 1 UID: 0 PID: 2326 Comm: btrfs Not tainted 6.11.0-rc3-btrfs-for-next #599\nHardware name: Bochs Bochs, BIOS Bochs 01/01/2011\nCall Trace:\n<TASK>\ndump_stack_lvl+0x5b/0x80\n__lock_acquire+0x2798/0x69d0\n? __pfx___lock_acquire+0x10/0x10\n? __pfx___lock_acquire+0x10/0x10\nlock_acquire+0x19d/0x4a0\n? btrfs_map_block+0x39f/0x2250\n? __pfx_lock_acquire+0x10/0x10\n? find_held_lock+0x2d/0x110\n? lock_is_held_type+0x8f/0x100\ndown_read+0x8e/0x440\n? btrfs_map_block+0x39f/0x2250\n? __pfx_down_read+0x10/0x10\n? do_raw_read_unlock+0x44/0x70\n? _raw_read_unlock+0x23/0x40\nbtrfs_map_block+0x39f/0x2250\n? btrfs_dev_replace_by_ioctl+0xd69/0x1d00\n? btrfs_bio_counter_inc_blocked+0xd9/0x2e0\n? __kasan_slab_alloc+0x6e/0x70\n? __pfx_btrfs_map_block+0x10/0x10\n? __pfx_btrfs_bio_counter_inc_blocked+0x10/0x10\n? kmem_cache_alloc_noprof+0x1f2/0x300\n? mempool_alloc_noprof+0xed/0x2b0\nbtrfs_submit_chunk+0x28d/0x17e0\n? __pfx_btrfs_submit_chunk+0x10/0x10\n? bvec_alloc+0xd7/0x1b0\n? bio_add_folio+0x171/0x270\n? __pfx_bio_add_folio+0x10/0x10\n? __kasan_check_read+0x20/0x20\nbtrfs_submit_bio+0x37/0x80\nread_extent_buffer_pages+0x3df/0x6c0\nbtrfs_read_extent_buffer+0x13e/0x5f0\nread_tree_block+0x81/0xe0\nread_block_for_search+0x4bd/0x7a0\n? __pfx_read_block_for_search+0x10/0x10\nbtrfs_search_slot+0x78d/0x2720\n? __pfx_btrfs_search_slot+0x10/0x10\n? lock_is_held_type+0x8f/0x100\n? kasan_save_track+0x14/0x30\n? __kasan_slab_alloc+0x6e/0x70\n? kmem_cache_alloc_noprof+0x1f2/0x300\nbtrfs_get_raid_extent_offset+0x181/0x820\n? __pfx_lock_acquire+0x10/0x10\n? __pfx_btrfs_get_raid_extent_offset+0x10/0x10\n? down_read+0x194/0x440\n? __pfx_down_read+0x10/0x10\n? do_raw_read_unlock+0x44/0x70\n? _raw_read_unlock+0x23/0x40\nbtrfs_map_block+0x5b5/0x2250\n? __pfx_btrfs_map_block+0x10/0x10\nscrub_submit_initial_read+0x8fe/0x11b0\n? __pfx_scrub_submit_initial_read+0x10/0x10\nsubmit_initial_group_read+0x161/0x3a0\n? lock_release+0x20e/0x710\n? __pfx_submit_initial_group_read+0x10/0x10\n? __pfx_lock_release+0x10/0x10\nscrub_simple_mirror.isra.0+0x3eb/0x580\nscrub_stripe+0xe4d/0x1440\n? lock_release+0x20e/0x710\n? __pfx_scrub_stripe+0x10/0x10\n? __pfx_lock_release+0x10/0x10\n? do_raw_read_unlock+0x44/0x70\n? _raw_read_unlock+0x23/0x40\nscrub_chunk+0x257/0x4a0\nscrub_enumerate_chunks+0x64c/0xf70\n? __mutex_unlock_slowpath+0x147/0x5f0\n? __pfx_scrub_enumerate_chunks+0x10/0x10\n? bit_wait_timeout+0xb0/0x170\n? __up_read+0x189/0x700\n? scrub_workers_get+0x231/0x300\n? up_write+0x490/0x4f0\nbtrfs_scrub_dev+0x52e/0xcd0\n? create_pending_snapshots+0x230/0x250\n? __pfx_btrfs_scrub_dev+0x10/0x10\nbtrfs_dev_replace_by_ioctl+0xd69/0x1d00\n? lock_acquire+0x19d/0x4a0\n? __pfx_btrfs_dev_replace_by_ioctl+0x10/0x10\n?\n---truncated---"], "name": "CVE-2024-48875", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-01-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-48875\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-48875\nhttps://lore.kernel.org/linux-cve-announce/2025011121-CVE-2024-48875-5b79@gregkh/T"], "threat_severity": "Moderate"}