{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49708", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:21:30.444Z", "datePublished": "2025-02-26T02:24:26.142Z", "dateUpdated": "2025-05-04T12:45:10.177Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T12:45:10.177Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix bug_on ext4_mb_use_inode_pa\n\nHulk Robot reported a BUG_ON:\n==================================================================\nkernel BUG at fs/ext4/mballoc.c:3211!\n[...]\nRIP: 0010:ext4_mb_mark_diskspace_used.cold+0x85/0x136f\n[...]\nCall Trace:\n ext4_mb_new_blocks+0x9df/0x5d30\n ext4_ext_map_blocks+0x1803/0x4d80\n ext4_map_blocks+0x3a4/0x1a10\n ext4_writepages+0x126d/0x2c30\n do_writepages+0x7f/0x1b0\n __filemap_fdatawrite_range+0x285/0x3b0\n file_write_and_wait_range+0xb1/0x140\n ext4_sync_file+0x1aa/0xca0\n vfs_fsync_range+0xfb/0x260\n do_fsync+0x48/0xa0\n[...]\n==================================================================\n\nAbove issue may happen as follows:\n-------------------------------------\ndo_fsync\n vfs_fsync_range\n ext4_sync_file\n file_write_and_wait_range\n __filemap_fdatawrite_range\n do_writepages\n ext4_writepages\n mpage_map_and_submit_extent\n mpage_map_one_extent\n ext4_map_blocks\n ext4_mb_new_blocks\n ext4_mb_normalize_request\n >>> start + size <= ac->ac_o_ex.fe_logical\n ext4_mb_regular_allocator\n ext4_mb_simple_scan_group\n ext4_mb_use_best_found\n ext4_mb_new_preallocation\n ext4_mb_new_inode_pa\n ext4_mb_use_inode_pa\n >>> set ac->ac_b_ex.fe_len <= 0\n ext4_mb_mark_diskspace_used\n >>> BUG_ON(ac->ac_b_ex.fe_len <= 0);\n\nwe can easily reproduce this problem with the following commands:\n\t`fallocate -l100M disk`\n\t`mkfs.ext4 -b 1024 -g 256 disk`\n\t`mount disk /mnt`\n\t`fsstress -d /mnt -l 0 -n 1000 -p 1`\n\nThe size must be smaller than or equal to EXT4_BLOCKS_PER_GROUP.\nTherefore, \"start + size <= ac->ac_o_ex.fe_logical\" may occur\nwhen the size is truncated. So start should be the start position of\nthe group where ac_o_ex.fe_logical is located after alignment.\nIn addition, when the value of fe_logical or EXT4_BLOCKS_PER_GROUP\nis very large, the value calculated by start_off is more accurate."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/mballoc.c"], "versions": [{"version": "fc6c2da174edd7a7b760b12c60d432d300e05cca", "lessThan": "6880fb2e64331b9fdc85d3f32b1d7e81ad8703f1", "status": "affected", "versionType": "git"}, {"version": "cd648b8a8fd5071d232242d5ee7ee3c0815776af", "lessThan": "a37c1359714da42517dd19d36fc3c4d17edba832", "status": "affected", "versionType": "git"}, {"version": "cd648b8a8fd5071d232242d5ee7ee3c0815776af", "lessThan": "5707d721d1819db57dba57b1d4623034fcb32047", "status": "affected", "versionType": "git"}, {"version": "cd648b8a8fd5071d232242d5ee7ee3c0815776af", "lessThan": "a6b31616e5afe1d3972cb0682a373e50597faf5c", "status": "affected", "versionType": "git"}, {"version": "cd648b8a8fd5071d232242d5ee7ee3c0815776af", "lessThan": "6fdaf31ad5f3d3afab744dfd9a8b0d9142aa881f", "status": "affected", "versionType": "git"}, {"version": "cd648b8a8fd5071d232242d5ee7ee3c0815776af", "lessThan": "90f0f9d45dff0128c0fca0d2358c4153b024afa6", "status": "affected", "versionType": "git"}, {"version": "cd648b8a8fd5071d232242d5ee7ee3c0815776af", "lessThan": "887a3e9ad4b8309a2266bce7ae749b2bf1f7a687", "status": "affected", "versionType": "git"}, {"version": "cd648b8a8fd5071d232242d5ee7ee3c0815776af", "lessThan": "a08f789d2ab5242c07e716baf9a835725046be89", "status": "affected", "versionType": "git"}, {"version": "f213db429b883a2d5403de0b1ce92fb7d7ee979e", "status": "affected", "versionType": "git"}, {"version": "98f58e05231f835dfb09359e3b5e3a886fe8f189", "status": "affected", "versionType": "git"}, {"version": "c1664e9bcf6291c0ceb8599f57c8cf493526abe6", "status": "affected", "versionType": "git"}, {"version": "37cf4ab1ba60c30ca9fd0fe3b9993b24cb87886a", "status": "affected", "versionType": "git"}, {"version": "75f37dab088eb84ff25a49e59371f01ea3f44aa7", "status": "affected", "versionType": "git"}, {"version": "8774c73cf6963310395823ed7077ea12943ea0f3", "status": "affected", "versionType": "git"}, {"version": "c4fbdc0124799f1772f4d886b7f2e1a6f881d195", "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/ext4/mballoc.c"], "versions": [{"version": "4.11", "status": "affected"}, {"version": "0", "lessThan": "4.11", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.320", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.285", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.249", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.200", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.124", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.49", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.6", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19", "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:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9.14", "versionEndExcluding": "4.9.320"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "4.14.285"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "4.19.249"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.4.200"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.10.124"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.15.49"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.18.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2.89"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10.107"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.12.72"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.1.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6880fb2e64331b9fdc85d3f32b1d7e81ad8703f1"}, {"url": "https://git.kernel.org/stable/c/a37c1359714da42517dd19d36fc3c4d17edba832"}, {"url": "https://git.kernel.org/stable/c/5707d721d1819db57dba57b1d4623034fcb32047"}, {"url": "https://git.kernel.org/stable/c/a6b31616e5afe1d3972cb0682a373e50597faf5c"}, {"url": "https://git.kernel.org/stable/c/6fdaf31ad5f3d3afab744dfd9a8b0d9142aa881f"}, {"url": "https://git.kernel.org/stable/c/90f0f9d45dff0128c0fca0d2358c4153b024afa6"}, {"url": "https://git.kernel.org/stable/c/887a3e9ad4b8309a2266bce7ae749b2bf1f7a687"}, {"url": "https://git.kernel.org/stable/c/a08f789d2ab5242c07e716baf9a835725046be89"}], "title": "ext4: fix bug_on ext4_mb_use_inode_pa", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix bug_on ext4_mb_use_inode_pa\n\nHulk Robot reported a BUG_ON:\n==================================================================\nkernel BUG at fs/ext4/mballoc.c:3211!\n[...]\nRIP: 0010:ext4_mb_mark_diskspace_used.cold+0x85/0x136f\n[...]\nCall Trace:\n ext4_mb_new_blocks+0x9df/0x5d30\n ext4_ext_map_blocks+0x1803/0x4d80\n ext4_map_blocks+0x3a4/0x1a10\n ext4_writepages+0x126d/0x2c30\n do_writepages+0x7f/0x1b0\n __filemap_fdatawrite_range+0x285/0x3b0\n file_write_and_wait_range+0xb1/0x140\n ext4_sync_file+0x1aa/0xca0\n vfs_fsync_range+0xfb/0x260\n do_fsync+0x48/0xa0\n[...]\n==================================================================\n\nAbove issue may happen as follows:\n-------------------------------------\ndo_fsync\n vfs_fsync_range\n ext4_sync_file\n file_write_and_wait_range\n __filemap_fdatawrite_range\n do_writepages\n ext4_writepages\n mpage_map_and_submit_extent\n mpage_map_one_extent\n ext4_map_blocks\n ext4_mb_new_blocks\n ext4_mb_normalize_request\n >>> start + size <= ac->ac_o_ex.fe_logical\n ext4_mb_regular_allocator\n ext4_mb_simple_scan_group\n ext4_mb_use_best_found\n ext4_mb_new_preallocation\n ext4_mb_new_inode_pa\n ext4_mb_use_inode_pa\n >>> set ac->ac_b_ex.fe_len <= 0\n ext4_mb_mark_diskspace_used\n >>> BUG_ON(ac->ac_b_ex.fe_len <= 0);\n\nwe can easily reproduce this problem with the following commands:\n\t`fallocate -l100M disk`\n\t`mkfs.ext4 -b 1024 -g 256 disk`\n\t`mount disk /mnt`\n\t`fsstress -d /mnt -l 0 -n 1000 -p 1`\n\nThe size must be smaller than or equal to EXT4_BLOCKS_PER_GROUP.\nTherefore, \"start + size <= ac->ac_o_ex.fe_logical\" may occur\nwhen the size is truncated. So start should be the start position of\nthe group where ac_o_ex.fe_logical is located after alignment.\nIn addition, when the value of fe_logical or EXT4_BLOCKS_PER_GROUP\nis very large, the value calculated by start_off is more accurate."}], "id": "CVE-2022-49708", "lastModified": "2025-02-26T07:01:46.607", "metrics": {}, "published": "2025-02-26T07:01:46.607", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5707d721d1819db57dba57b1d4623034fcb32047"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6880fb2e64331b9fdc85d3f32b1d7e81ad8703f1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6fdaf31ad5f3d3afab744dfd9a8b0d9142aa881f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/887a3e9ad4b8309a2266bce7ae749b2bf1f7a687"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/90f0f9d45dff0128c0fca0d2358c4153b024afa6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a08f789d2ab5242c07e716baf9a835725046be89"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a37c1359714da42517dd19d36fc3c4d17edba832"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a6b31616e5afe1d3972cb0682a373e50597faf5c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"affected_release": [{"advisory": "RHSA-2022:7683", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-425.3.1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-11-08T00:00:00Z"}, {"advisory": "RHSA-2022:8267", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.6.1.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2022:8267", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.6.1.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}], "bugzilla": {"description": "kernel: ext4: fix bug_on ext4_mb_use_inode_pa", "id": "2347684", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347684"}, "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": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\next4: fix bug_on ext4_mb_use_inode_pa\nHulk Robot reported a BUG_ON:\n==================================================================\nkernel BUG at fs/ext4/mballoc.c:3211!\n[...]\nRIP: 0010:ext4_mb_mark_diskspace_used.cold+0x85/0x136f\n[...]\nCall Trace:\next4_mb_new_blocks+0x9df/0x5d30\next4_ext_map_blocks+0x1803/0x4d80\next4_map_blocks+0x3a4/0x1a10\next4_writepages+0x126d/0x2c30\ndo_writepages+0x7f/0x1b0\n__filemap_fdatawrite_range+0x285/0x3b0\nfile_write_and_wait_range+0xb1/0x140\next4_sync_file+0x1aa/0xca0\nvfs_fsync_range+0xfb/0x260\ndo_fsync+0x48/0xa0\n[...]\n==================================================================\nAbove issue may happen as follows:\n-------------------------------------\ndo_fsync\nvfs_fsync_range\next4_sync_file\nfile_write_and_wait_range\n__filemap_fdatawrite_range\ndo_writepages\next4_writepages\nmpage_map_and_submit_extent\nmpage_map_one_extent\next4_map_blocks\next4_mb_new_blocks\next4_mb_normalize_request\n>>> start + size <= ac->ac_o_ex.fe_logical\next4_mb_regular_allocator\next4_mb_simple_scan_group\next4_mb_use_best_found\next4_mb_new_preallocation\next4_mb_new_inode_pa\next4_mb_use_inode_pa\n>>> set ac->ac_b_ex.fe_len <= 0\next4_mb_mark_diskspace_used\n>>> BUG_ON(ac->ac_b_ex.fe_len <= 0);\nwe can easily reproduce this problem with the following commands:\n`fallocate -l100M disk`\n`mkfs.ext4 -b 1024 -g 256 disk`\n`mount disk /mnt`\n`fsstress -d /mnt -l 0 -n 1000 -p 1`\nThe size must be smaller than or equal to EXT4_BLOCKS_PER_GROUP.\nTherefore, \"start + size <= ac->ac_o_ex.fe_logical\" may occur\nwhen the size is truncated. So start should be the start position of\nthe group where ac_o_ex.fe_logical is located after alignment.\nIn addition, when the value of fe_logical or EXT4_BLOCKS_PER_GROUP\nis very large, the value calculated by start_off is more accurate."], "name": "CVE-2022-49708", "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": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49708\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49708\nhttps://lore.kernel.org/linux-cve-announce/2025022630-CVE-2022-49708-f056@gregkh/T"], "threat_severity": "Moderate"}