{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-53149", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-02T15:51:43.565Z", "datePublished": "2025-09-15T14:03:13.334Z", "dateUpdated": "2025-09-15T14:03:13.334Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-09-15T14:03:13.334Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid deadlock in fs reclaim with page writeback\n\nExt4 has a filesystem wide lock protecting ext4_writepages() calls to\navoid races with switching of journalled data flag or inode format. This\nlock can however cause a deadlock like:\n\nCPU0 CPU1\n\next4_writepages()\n percpu_down_read(sbi->s_writepages_rwsem);\n ext4_change_inode_journal_flag()\n percpu_down_write(sbi->s_writepages_rwsem);\n - blocks, all readers block from now on\n ext4_do_writepages()\n ext4_init_io_end()\n kmem_cache_zalloc(io_end_cachep, GFP_KERNEL)\n fs_reclaim frees dentry...\n dentry_unlink_inode()\n iput() - last ref =>\n iput_final() - inode dirty =>\n write_inode_now()...\n ext4_writepages() tries to acquire sbi->s_writepages_rwsem\n and blocks forever\n\nMake sure we cannot recurse into filesystem reclaim from writeback code\nto avoid the deadlock."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/ext4.h", "fs/ext4/inode.c", "fs/ext4/migrate.c"], "versions": [{"version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f", "lessThan": "2ec97dc90df40c50e509809dc9a198638a7e18b6", "status": "affected", "versionType": "git"}, {"version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f", "lessThan": "4b4340bf04ce9a52061f15000ecedd126abc093c", "status": "affected", "versionType": "git"}, {"version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f", "lessThan": "00d873c17e29cc32d90ca852b82685f1673acaa5", "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/ext4.h", "fs/ext4/inode.c", "fs/ext4/migrate.c"], "versions": [{"version": "4.7", "status": "affected"}, {"version": "0", "lessThan": "4.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.16", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3.3", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.4", "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": "4.7", "versionEndExcluding": "6.2.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.3.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2ec97dc90df40c50e509809dc9a198638a7e18b6"}, {"url": "https://git.kernel.org/stable/c/4b4340bf04ce9a52061f15000ecedd126abc093c"}, {"url": "https://git.kernel.org/stable/c/00d873c17e29cc32d90ca852b82685f1673acaa5"}], "title": "ext4: avoid deadlock in fs reclaim with page writeback", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid deadlock in fs reclaim with page writeback\n\nExt4 has a filesystem wide lock protecting ext4_writepages() calls to\navoid races with switching of journalled data flag or inode format. This\nlock can however cause a deadlock like:\n\nCPU0 CPU1\n\next4_writepages()\n percpu_down_read(sbi->s_writepages_rwsem);\n ext4_change_inode_journal_flag()\n percpu_down_write(sbi->s_writepages_rwsem);\n - blocks, all readers block from now on\n ext4_do_writepages()\n ext4_init_io_end()\n kmem_cache_zalloc(io_end_cachep, GFP_KERNEL)\n fs_reclaim frees dentry...\n dentry_unlink_inode()\n iput() - last ref =>\n iput_final() - inode dirty =>\n write_inode_now()...\n ext4_writepages() tries to acquire sbi->s_writepages_rwsem\n and blocks forever\n\nMake sure we cannot recurse into filesystem reclaim from writeback code\nto avoid the deadlock."}], "id": "CVE-2023-53149", "lastModified": "2025-09-15T15:22:27.090", "metrics": {}, "published": "2025-09-15T14:15:37.393", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/00d873c17e29cc32d90ca852b82685f1673acaa5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2ec97dc90df40c50e509809dc9a198638a7e18b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4b4340bf04ce9a52061f15000ecedd126abc093c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: ext4: avoid deadlock in fs reclaim with page writeback", "id": "2395246", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395246"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-53149", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53149\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53149\nhttps://lore.kernel.org/linux-cve-announce/2025091552-CVE-2023-53149-2f0a@gregkh/T"], "threat_severity": "Moderate"}