{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89576","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.727Z","datePublished":"2026-09-11T19:44:43.777Z","dateUpdated":"2026-09-14T12:01:08.620Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-14T12:01:08.620Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-era: fix shadowed superblock leak on take-snap failure\n\nmetadata_take_snap() bumps the live superblock refcount and then\ndm_tm_shadow_block() allocates a new block for the metadata snapshot.\nIf the subsequent dm_sm_inc_block() of writeset_tree_root or\nera_array_root fails, the function only unlocks the clone and\nreturns.  The newly allocated shadow block is never returned to the\nmetadata space map, so each failed take-snap permanently leaks one\nmetadata block.\n\nFree the clone with dm_sm_dec_block() on those error paths, matching\nthe final step of metadata_drop_snap()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/dm-era-target.c"],"versions":[{"version":"eec40579d84873dfb7021eb24c50360f073237c5","lessThan":"54dd21ca945ecc07885012b9f3e8197f091cfba0","status":"affected","versionType":"git"},{"version":"eec40579d84873dfb7021eb24c50360f073237c5","lessThan":"ef00efb6fcaee88f50891279ceced17c614e97f7","status":"affected","versionType":"git"},{"version":"eec40579d84873dfb7021eb24c50360f073237c5","lessThan":"e9fa68b89214bc65af0ef963af7ec3cce9f866e0","status":"affected","versionType":"git"},{"version":"eec40579d84873dfb7021eb24c50360f073237c5","lessThan":"dc731d7fddfd6149f5e88ea080475d18c36d3c64","status":"affected","versionType":"git"},{"version":"eec40579d84873dfb7021eb24c50360f073237c5","lessThan":"d66ceeefb87ddb097b0546bafc581380b816b048","status":"affected","versionType":"git"},{"version":"eec40579d84873dfb7021eb24c50360f073237c5","lessThan":"36ff918637e3517f732188a3c39dbeae5b9cfb1b","status":"affected","versionType":"git"},{"version":"eec40579d84873dfb7021eb24c50360f073237c5","lessThan":"6876ca330e741fb8886d12070cb6a7f9cb67257e","status":"affected","versionType":"git"},{"version":"eec40579d84873dfb7021eb24c50360f073237c5","lessThan":"39c5aa3bd8ec3912d2cd0b3fe092642b0d2b0713","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/dm-era-target.c"],"versions":[{"version":"3.15","status":"affected"},{"version":"0","lessThan":"3.15","status":"unaffected","versionType":"semver"},{"version":"5.10.270","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.221","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.188","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.109","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.50","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.4","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"3.15","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/54dd21ca945ecc07885012b9f3e8197f091cfba0"},{"url":"https://git.kernel.org/stable/c/ef00efb6fcaee88f50891279ceced17c614e97f7"},{"url":"https://git.kernel.org/stable/c/e9fa68b89214bc65af0ef963af7ec3cce9f866e0"},{"url":"https://git.kernel.org/stable/c/dc731d7fddfd6149f5e88ea080475d18c36d3c64"},{"url":"https://git.kernel.org/stable/c/d66ceeefb87ddb097b0546bafc581380b816b048"},{"url":"https://git.kernel.org/stable/c/36ff918637e3517f732188a3c39dbeae5b9cfb1b"},{"url":"https://git.kernel.org/stable/c/6876ca330e741fb8886d12070cb6a7f9cb67257e"},{"url":"https://git.kernel.org/stable/c/39c5aa3bd8ec3912d2cd0b3fe092642b0d2b0713"}],"title":"dm-era: fix shadowed superblock leak on take-snap failure","x_generator":{"engine":"bippy-1.2.0"}}}}