CVE-2026-93269

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93269", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.097Z", "datePublished": "2026-09-24T15:52:09.047Z", "dateUpdated": "2026-10-30T12:36:36.458Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:36:36.458Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix circular lock dependency in ext4_ext_migrate\n\nMove iput(tmp_inode) after ext4_writepages_up_write() to avoid a\ncircular lock dependency between s_writepages_rwsem and sb_internal\n(freeze protection).\n\nThe deadlock scenario:\n\n CPU0 (EXT4_IOC_MIGRATE) CPU1 (orphan cleanup during mount)\n ---- ----\n ext4_ext_migrate()\n ext4_writepages_down_write()\n s_writepages_rwsem (write)\n ext4_evict_inode()\n sb_start_intwrite() [sb_internal]\n ...\n ext4_writepages()\n s_writepages_rwsem (read) [BLOCKED]\n iput(tmp_inode)\n ext4_evict_inode()\n sb_start_intwrite() [BLOCKED]\n\nThe tmp_inode is a temporary inode with nlink=0 created solely for\nbuilding the extent tree. Its eviction does not require\ns_writepages_rwsem protection, so deferring iput() until after\nreleasing the rwsem is safe."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/migrate.c"], "versions": [{"version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "lessThan": "f204882d5eaca09f7848f081c9c9b5bbf2234895", "status": "affected", "versionType": "git"}, {"version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "lessThan": "452950461241dfed8b1d32e94b227db38c99c5af", "status": "affected", "versionType": "git"}, {"version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "lessThan": "ada23457d4748d6e9c36c6f871fc29a6f558c48c", "status": "affected", "versionType": "git"}, {"version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "lessThan": "e4223231b6860141813637a6413c2371ae4d6fa8", "status": "affected", "versionType": "git"}, {"version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "lessThan": "32f7ab52875ec7f800ca67e7176e5743a84baddf", "status": "affected", "versionType": "git"}, {"version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "lessThan": "a897682793eba5de51ee6f3152760374afa629cf", "status": "affected", "versionType": "git"}, {"version": "eb799e163dc2bc1ea0a4820b66f79d32a5e907df", "status": "affected", "versionType": "git"}, {"version": "bcc1eab71a67c46b9e24544ac7923f44444174ce", "status": "affected", "versionType": "git"}, {"version": "8cf20fb73e73a4c4df0328b5297842c5ef34fdd9", "status": "affected", "versionType": "git"}, {"version": "e5d25003d059649e18a249635ed5ca7a7b1de5ad", "status": "affected", "versionType": "git"}, {"version": "69f8a7991fd93c49096ddd11574db3e7df238b7b", "status": "affected", "versionType": "git"}, {"version": "4.9.215", "lessThan": "4.10", "status": "affected", "versionType": "semver"}, {"version": "4.14.172", "lessThan": "4.15", "status": "affected", "versionType": "semver"}, {"version": "4.19.107", "lessThan": "4.20", "status": "affected", "versionType": "semver"}, {"version": "5.4.23", "lessThan": "5.5", "status": "affected", "versionType": "semver"}, {"version": "5.5.7", "lessThan": "5.6", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/migrate.c"], "versions": [{"version": "5.6", "status": "affected"}, {"version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "5.6", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9.215"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.172"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.107"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.23"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5.7"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f204882d5eaca09f7848f081c9c9b5bbf2234895"}, {"url": "https://git.kernel.org/stable/c/452950461241dfed8b1d32e94b227db38c99c5af"}, {"url": "https://git.kernel.org/stable/c/ada23457d4748d6e9c36c6f871fc29a6f558c48c"}, {"url": "https://git.kernel.org/stable/c/e4223231b6860141813637a6413c2371ae4d6fa8"}, {"url": "https://git.kernel.org/stable/c/32f7ab52875ec7f800ca67e7176e5743a84baddf"}, {"url": "https://git.kernel.org/stable/c/a897682793eba5de51ee6f3152760374afa629cf"}], "title": "ext4: fix circular lock dependency in ext4_ext_migrate", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/ext4/migrate.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f204882d5eaca09f7848f081c9c9b5bbf2234895", "status": "affected", "version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "versionType": "git"}, {"lessThan": "452950461241dfed8b1d32e94b227db38c99c5af", "status": "affected", "version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "versionType": "git"}, {"lessThan": "ada23457d4748d6e9c36c6f871fc29a6f558c48c", "status": "affected", "version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "versionType": "git"}, {"lessThan": "e4223231b6860141813637a6413c2371ae4d6fa8", "status": "affected", "version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "versionType": "git"}, {"lessThan": "32f7ab52875ec7f800ca67e7176e5743a84baddf", "status": "affected", "version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "versionType": "git"}, {"lessThan": "a897682793eba5de51ee6f3152760374afa629cf", "status": "affected", "version": "cb85f4d23f794e24127f3e562cb3b54b0803f456", "versionType": "git"}, {"status": "affected", "version": "eb799e163dc2bc1ea0a4820b66f79d32a5e907df", "versionType": "git"}, {"status": "affected", "version": "bcc1eab71a67c46b9e24544ac7923f44444174ce", "versionType": "git"}, {"status": "affected", "version": "8cf20fb73e73a4c4df0328b5297842c5ef34fdd9", "versionType": "git"}, {"status": "affected", "version": "e5d25003d059649e18a249635ed5ca7a7b1de5ad", "versionType": "git"}, {"status": "affected", "version": "69f8a7991fd93c49096ddd11574db3e7df238b7b", "versionType": "git"}, {"lessThan": "4.10", "status": "affected", "version": "4.9.215", "versionType": "semver"}, {"lessThan": "4.15", "status": "affected", "version": "4.14.172", "versionType": "semver"}, {"lessThan": "4.20", "status": "affected", "version": "4.19.107", "versionType": "semver"}, {"lessThan": "5.5", "status": "affected", "version": "5.4.23", "versionType": "semver"}, {"lessThan": "5.6", "status": "affected", "version": "5.5.7", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/ext4/migrate.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.6"}, {"lessThan": "5.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix circular lock dependency in ext4_ext_migrate\n\nMove iput(tmp_inode) after ext4_writepages_up_write() to avoid a\ncircular lock dependency between s_writepages_rwsem and sb_internal\n(freeze protection).\n\nThe deadlock scenario:\n\n CPU0 (EXT4_IOC_MIGRATE) CPU1 (orphan cleanup during mount)\n ---- ----\n ext4_ext_migrate()\n ext4_writepages_down_write()\n s_writepages_rwsem (write)\n ext4_evict_inode()\n sb_start_intwrite() [sb_internal]\n ...\n ext4_writepages()\n s_writepages_rwsem (read) [BLOCKED]\n iput(tmp_inode)\n ext4_evict_inode()\n sb_start_intwrite() [BLOCKED]\n\nThe tmp_inode is a temporary inode with nlink=0 created solely for\nbuilding the extent tree. Its eviction does not require\ns_writepages_rwsem protection, so deferring iput() until after\nreleasing the rwsem is safe."}], "id": "CVE-2026-93269", "lastModified": "2026-10-30T13:21:01.700", "metrics": {}, "published": "2026-09-24T16:17:23.873", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/32f7ab52875ec7f800ca67e7176e5743a84baddf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/452950461241dfed8b1d32e94b227db38c99c5af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a897682793eba5de51ee6f3152760374afa629cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ada23457d4748d6e9c36c6f871fc29a6f558c48c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e4223231b6860141813637a6413c2371ae4d6fa8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f204882d5eaca09f7848f081c9c9b5bbf2234895"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ext4: fix circular lock dependency in ext4_ext_migrate", "id": "2540362", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540362"}, "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-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\next4: fix circular lock dependency in ext4_ext_migrate\nMove iput(tmp_inode) after ext4_writepages_up_write() to avoid a\ncircular lock dependency between s_writepages_rwsem and sb_internal\n(freeze protection).\nThe deadlock scenario:\nCPU0 (EXT4_IOC_MIGRATE) CPU1 (orphan cleanup during mount)\n---- ----\next4_ext_migrate()\next4_writepages_down_write()\ns_writepages_rwsem (write)\next4_evict_inode()\nsb_start_intwrite() [sb_internal]\n...\next4_writepages()\ns_writepages_rwsem (read) [BLOCKED]\niput(tmp_inode)\next4_evict_inode()\nsb_start_intwrite() [BLOCKED]\nThe tmp_inode is a temporary inode with nlink=0 created solely for\nbuilding the extent tree. Its eviction does not require\ns_writepages_rwsem protection, so deferring iput() until after\nreleasing the rwsem is safe.", "A flaw was found in the Linux kernel's ext4 file system. A local user can cause a Denial of Service (DoS) by triggering a deadlock during file extent migration operations. Under specific timing conditions, conflicting lock dependencies between extent migration and background inode cleanup leave kernel processes permanently blocked, resulting in a system freeze."], "name": "CVE-2026-93269", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93269\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93269\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93269.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cb85f4d23f794e24127f3e562cb3b54b0803f456,452950461241dfed8b1d32e94b227db38c99c5af)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cb85f4d23f794e24127f3e562cb3b54b0803f456,ada23457d4748d6e9c36c6f871fc29a6f558c48c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cb85f4d23f794e24127f3e562cb3b54b0803f456,e4223231b6860141813637a6413c2371ae4d6fa8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cb85f4d23f794e24127f3e562cb3b54b0803f456,32f7ab52875ec7f800ca67e7176e5743a84baddf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cb85f4d23f794e24127f3e562cb3b54b0803f456,a897682793eba5de51ee6f3152760374afa629cf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.9.215,4.10)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.14.172,4.15)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.19.107,4.20)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.4.23,5.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.5.7,5.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "eb799e163dc2bc1ea0a4820b66f79d32a5e907df"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "bcc1eab71a67c46b9e24544ac7923f44444174ce"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "8cf20fb73e73a4c4df0328b5297842c5ef34fdd9"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "e5d25003d059649e18a249635ed5ca7a7b1de5ad"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "69f8a7991fd93c49096ddd11574db3e7df238b7b"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T05:15:17.154847+00:00", "updated": "2026-10-01T20:15:12.397001+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-833", "CWE-904"]}