{"id":"CVE-2026-93269","aliases":[],"cve":{"records":[{"id":"CVE-2026-93269","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-17T16:02:15.097Z","published":"2026-09-24T15:52:09.047Z","modified":"2026-10-30T12:36:36.458Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:36:36.458Z"}],"references":[{"url":"https://git.kernel.org/stable/c/f204882d5eaca09f7848f081c9c9b5bbf2234895","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/452950461241dfed8b1d32e94b227db38c99c5af","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/ada23457d4748d6e9c36c6f871fc29a6f558c48c","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/e4223231b6860141813637a6413c2371ae4d6fa8","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/32f7ab52875ec7f800ca67e7176e5743a84baddf","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/a897682793eba5de51ee6f3152760374afa629cf","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"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"}]}]}]}],"prioritization":[]},"title":"ext4: fix circular lock dependency in ext4_ext_migrate","titleSource":"Linux","descriptionSource":"Linux","description":"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.","score":null,"severity":"unknown","published":"2026-09-24T15:52:09.047Z","modified":"2026-10-30T12:36:36.458Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"cb85f4d23f794e24127f3e562cb3b54b0803f456","status":"affected","lessThan":"f204882d5eaca09f7848f081c9c9b5bbf2234895","versionType":"git"},{"version":"cb85f4d23f794e24127f3e562cb3b54b0803f456","status":"affected","lessThan":"452950461241dfed8b1d32e94b227db38c99c5af","versionType":"git"},{"version":"cb85f4d23f794e24127f3e562cb3b54b0803f456","status":"affected","lessThan":"ada23457d4748d6e9c36c6f871fc29a6f558c48c","versionType":"git"},{"version":"cb85f4d23f794e24127f3e562cb3b54b0803f456","status":"affected","lessThan":"e4223231b6860141813637a6413c2371ae4d6fa8","versionType":"git"},{"version":"cb85f4d23f794e24127f3e562cb3b54b0803f456","status":"affected","lessThan":"32f7ab52875ec7f800ca67e7176e5743a84baddf","versionType":"git"},{"version":"cb85f4d23f794e24127f3e562cb3b54b0803f456","status":"affected","lessThan":"a897682793eba5de51ee6f3152760374afa629cf","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","status":"affected","lessThan":"4.10","versionType":"semver"},{"version":"4.14.172","status":"affected","lessThan":"4.15","versionType":"semver"},{"version":"4.19.107","status":"affected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.23","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"5.5.7","status":"affected","lessThan":"5.6","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-93269"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-93269"}],"remediation":[],"references":["https://git.kernel.org/stable/c/f204882d5eaca09f7848f081c9c9b5bbf2234895","https://git.kernel.org/stable/c/452950461241dfed8b1d32e94b227db38c99c5af","https://git.kernel.org/stable/c/ada23457d4748d6e9c36c6f871fc29a6f558c48c","https://git.kernel.org/stable/c/e4223231b6860141813637a6413c2371ae4d6fa8","https://git.kernel.org/stable/c/32f7ab52875ec7f800ca67e7176e5743a84baddf","https://git.kernel.org/stable/c/a897682793eba5de51ee6f3152760374afa629cf"],"sources":[{"name":"CVE","id":"CVE-2026-93269","modified":"2026-10-30T12:36:36.458Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93269"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-30T13:55:52.964Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T23:40:32.333Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"The Linux kernel has a circular lock dependency vulnerability in ext4_ext_migrate. Affected versions include 4.9.215, 4.14.172, 4.19.107, 5.4.23, 5.5.7, and 5.6. The vulnerability may cause a deadlock scenario.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-31T16:21:28.556Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-93269"}]}}