{"id":"CVE-2025-68374","state":"PUBLISHED","title":"md: fix rcu protection in md_wakeup_thread","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd: fix rcu protection in md_wakeup_thread\n\nWe attempted to use RCU to protect the pointer 'thread', but directly\npassed the value when calling md_wakeup_thread(). This means that the\nRCU pointer has been acquired before rcu_read_lock(), which renders\nrcu_read_lock() ineffective and could lead to a use-after-free.","publishedAt":"2025-12-24T10:33:04.046Z","updatedAt":"2026-10-21T12:38:20.382Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"dc6d1249ee35c1c76700b4b96281daeb7637bce1","versionType":"git"},{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"21989cb5034c835b212385a2afadf279d8069da0","versionType":"git"},{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"a4bd1caf591faeae44cb10b6517e7dacb5139bda","versionType":"git"},{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"f98b191f78124405294481dea85f8a22a3eb0a59","versionType":"git"},{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"0dc76205549b4c25705e54345f211b9f66e018a0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c","drivers/md/md.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.63","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.13","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18.2","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c","drivers/md/md.h"]}],"references":["https://git.kernel.org/stable/c/dc6d1249ee35c1c76700b4b96281daeb7637bce1","https://git.kernel.org/stable/c/21989cb5034c835b212385a2afadf279d8069da0","https://git.kernel.org/stable/c/a4bd1caf591faeae44cb10b6517e7dacb5139bda","https://git.kernel.org/stable/c/f98b191f78124405294481dea85f8a22a3eb0a59","https://git.kernel.org/stable/c/0dc76205549b4c25705e54345f211b9f66e018a0"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68374.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68374","state":"PUBLISHED","datePublished":"2025-12-24T10:33:04.046Z","dateUpdated":"2026-10-21T12:38:20.382Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-16T14:48:05.310Z"},"containers":{"cna":{"title":"md: fix rcu protection in md_wakeup_thread","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd: fix rcu protection in md_wakeup_thread\n\nWe attempted to use RCU to protect the pointer 'thread', but directly\npassed the value when calling md_wakeup_thread(). This means that the\nRCU pointer has been acquired before rcu_read_lock(), which renders\nrcu_read_lock() ineffective and could lead to a use-after-free."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"dc6d1249ee35c1c76700b4b96281daeb7637bce1","versionType":"git"},{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"21989cb5034c835b212385a2afadf279d8069da0","versionType":"git"},{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"a4bd1caf591faeae44cb10b6517e7dacb5139bda","versionType":"git"},{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"f98b191f78124405294481dea85f8a22a3eb0a59","versionType":"git"},{"version":"4469315439827290923fce4f3f672599cabeb366","status":"affected","lessThan":"0dc76205549b4c25705e54345f211b9f66e018a0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c","drivers/md/md.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.5","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.63","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.13","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18.2","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c","drivers/md/md.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/dc6d1249ee35c1c76700b4b96281daeb7637bce1"},{"url":"https://git.kernel.org/stable/c/21989cb5034c835b212385a2afadf279d8069da0"},{"url":"https://git.kernel.org/stable/c/a4bd1caf591faeae44cb10b6517e7dacb5139bda"},{"url":"https://git.kernel.org/stable/c/f98b191f78124405294481dea85f8a22a3eb0a59"},{"url":"https://git.kernel.org/stable/c/0dc76205549b4c25705e54345f211b9f66e018a0"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:38:20.382Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.12.63"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.17.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.18.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}