{"id":"CVE-2026-74370","state":"PUBLISHED","title":"liveupdate: fix TOCTOU race in luo_session_retrieve()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nliveupdate: fix TOCTOU race in luo_session_retrieve()\n\nExtend the scope of the rwsem_read lock in luo_session_retrieve() to\noverlap with the acquisition of the session mutex. This prevents a\nconcurrent thread from releasing and freeing the session between the\nlookup and the mutex lock.","publishedAt":"2026-08-15T05:58:50.933Z","updatedAt":"2026-08-17T05:18:05.573Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0153094d03df5a2e834a19c59b255649a258ae46","status":"affected","lessThan":"d944170607b872a1f93713c555ad3f0efde3a9b8","versionType":"git"},{"version":"0153094d03df5a2e834a19c59b255649a258ae46","status":"affected","lessThan":"d3ae9e7fddb4036f50003d7fa1ef52801fdb961b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/liveupdate/luo_session.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/liveupdate/luo_session.c"]}],"references":["https://git.kernel.org/stable/c/d944170607b872a1f93713c555ad3f0efde3a9b8","https://git.kernel.org/stable/c/d3ae9e7fddb4036f50003d7fa1ef52801fdb961b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74370.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74370","state":"PUBLISHED","datePublished":"2026-08-15T05:58:50.933Z","dateUpdated":"2026-08-17T05:18:05.573Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.888Z"},"containers":{"cna":{"title":"liveupdate: fix TOCTOU race in luo_session_retrieve()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nliveupdate: fix TOCTOU race in luo_session_retrieve()\n\nExtend the scope of the rwsem_read lock in luo_session_retrieve() to\noverlap with the acquisition of the session mutex. This prevents a\nconcurrent thread from releasing and freeing the session between the\nlookup and the mutex lock."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0153094d03df5a2e834a19c59b255649a258ae46","status":"affected","lessThan":"d944170607b872a1f93713c555ad3f0efde3a9b8","versionType":"git"},{"version":"0153094d03df5a2e834a19c59b255649a258ae46","status":"affected","lessThan":"d3ae9e7fddb4036f50003d7fa1ef52801fdb961b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/liveupdate/luo_session.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/liveupdate/luo_session.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d944170607b872a1f93713c555ad3f0efde3a9b8"},{"url":"https://git.kernel.org/stable/c/d3ae9e7fddb4036f50003d7fa1ef52801fdb961b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:18:05.573Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}