{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-21745","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-12-29T08:45:45.757Z","datePublished":"2025-02-27T02:12:17.853Z","dateUpdated":"2025-11-03T19:36:50.044Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:20:12.950Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nblk-cgroup: Fix class @block_class's subsystem refcount leakage\n\nblkcg_fill_root_iostats() iterates over @block_class's devices by\nclass_dev_iter_(init|next)(), but does not end iterating with\nclass_dev_iter_exit(), so causes the class's subsystem refcount leakage.\n\nFix by ending the iterating with class_dev_iter_exit()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-cgroup.c"],"versions":[{"version":"ef45fe470e1e5410db4af87abc5d5055427945ac","lessThan":"ffb494f1e7a047bd7a41b13796fcfb08fe5beafb","status":"affected","versionType":"git"},{"version":"ef45fe470e1e5410db4af87abc5d5055427945ac","lessThan":"38287f779b34dfe959b4b681e909f2d3d52b88be","status":"affected","versionType":"git"},{"version":"ef45fe470e1e5410db4af87abc5d5055427945ac","lessThan":"431b6ef2714be4d5babb802114987541a88b43b0","status":"affected","versionType":"git"},{"version":"ef45fe470e1e5410db4af87abc5d5055427945ac","lessThan":"993121481b5a87829f1e8163f47158b72679f309","status":"affected","versionType":"git"},{"version":"ef45fe470e1e5410db4af87abc5d5055427945ac","lessThan":"2ce09aabe009453d641a2ceb79e6461a2d4f3876","status":"affected","versionType":"git"},{"version":"ef45fe470e1e5410db4af87abc5d5055427945ac","lessThan":"67c7f213e052b1aa6caba4a7e25e303bc6997126","status":"affected","versionType":"git"},{"version":"ef45fe470e1e5410db4af87abc5d5055427945ac","lessThan":"d1248436cbef1f924c04255367ff4845ccd9025e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-cgroup.c"],"versions":[{"version":"5.9","status":"affected"},{"version":"0","lessThan":"5.9","status":"unaffected","versionType":"semver"},{"version":"5.10.235","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.179","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.129","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.78","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.14","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.13.3","lessThanOrEqual":"6.13.*","status":"unaffected","versionType":"semver"},{"version":"6.14","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":"5.9","versionEndExcluding":"5.10.235"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.15.179"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.1.129"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.6.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.12.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.13.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.14"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ffb494f1e7a047bd7a41b13796fcfb08fe5beafb"},{"url":"https://git.kernel.org/stable/c/38287f779b34dfe959b4b681e909f2d3d52b88be"},{"url":"https://git.kernel.org/stable/c/431b6ef2714be4d5babb802114987541a88b43b0"},{"url":"https://git.kernel.org/stable/c/993121481b5a87829f1e8163f47158b72679f309"},{"url":"https://git.kernel.org/stable/c/2ce09aabe009453d641a2ceb79e6461a2d4f3876"},{"url":"https://git.kernel.org/stable/c/67c7f213e052b1aa6caba4a7e25e303bc6997126"},{"url":"https://git.kernel.org/stable/c/d1248436cbef1f924c04255367ff4845ccd9025e"}],"title":"blk-cgroup: Fix class @block_class's subsystem refcount leakage","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T19:36:50.044Z"}}]}}