{"id":"CVE-2026-93052","state":"PUBLISHED","title":"misc: bcm-vk: Use acquire/release for msgq_inited","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: bcm-vk: Use acquire/release for msgq_inited\n\nbcm_vk_sync_msgq() fills the message queue information and then sets\nmsgq_inited. Readers call bcm_vk_drv_access_ok() before accessing the\nmessage queues and their cached queue information.\n\natomic_set()/atomic_read() do not order those accesses. A reader can see\nmsgq_inited set while still seeing stale queue information. Use release\nwhen publishing the initialized queues and acquire when checking the gate.\n\nKeep the clear in bcm_vk_blk_drv_access() as atomic_set(). It closes the\ngate and does not publish queue state to readers.","publishedAt":"2026-09-17T16:10:41.716Z","updatedAt":"2026-10-19T09:04:47.240Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"bab66a9e30e39a06f3463b19f8c704386dfd5268","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"679cfada6868723ccf162ec3b78c7402ff2405bf","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"f7a8f4cbc8cede0be55220367dc52b126e2d39e5","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"1df3926ed8771edf286ff753428b243f334e6041","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"a45d6dd3c11e921882a2e74c7c8710b975f2eaa7","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"4984277bc43f84d7506346a09b29af138246d54a","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"61b101c6a150057b6d512421ed108aed16e822ea","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/bcm-vk/bcm_vk_msg.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","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"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/bcm-vk/bcm_vk_msg.c"]}],"references":["https://git.kernel.org/stable/c/bab66a9e30e39a06f3463b19f8c704386dfd5268","https://git.kernel.org/stable/c/679cfada6868723ccf162ec3b78c7402ff2405bf","https://git.kernel.org/stable/c/f7a8f4cbc8cede0be55220367dc52b126e2d39e5","https://git.kernel.org/stable/c/1df3926ed8771edf286ff753428b243f334e6041","https://git.kernel.org/stable/c/a45d6dd3c11e921882a2e74c7c8710b975f2eaa7","https://git.kernel.org/stable/c/4984277bc43f84d7506346a09b29af138246d54a","https://git.kernel.org/stable/c/61b101c6a150057b6d512421ed108aed16e822ea"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93052.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93052","state":"PUBLISHED","datePublished":"2026-09-17T16:10:41.716Z","dateUpdated":"2026-10-19T09:04:47.240Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T15:57:05.658Z"},"containers":{"cna":{"title":"misc: bcm-vk: Use acquire/release for msgq_inited","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: bcm-vk: Use acquire/release for msgq_inited\n\nbcm_vk_sync_msgq() fills the message queue information and then sets\nmsgq_inited. Readers call bcm_vk_drv_access_ok() before accessing the\nmessage queues and their cached queue information.\n\natomic_set()/atomic_read() do not order those accesses. A reader can see\nmsgq_inited set while still seeing stale queue information. Use release\nwhen publishing the initialized queues and acquire when checking the gate.\n\nKeep the clear in bcm_vk_blk_drv_access() as atomic_set(). It closes the\ngate and does not publish queue state to readers."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"bab66a9e30e39a06f3463b19f8c704386dfd5268","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"679cfada6868723ccf162ec3b78c7402ff2405bf","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"f7a8f4cbc8cede0be55220367dc52b126e2d39e5","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"1df3926ed8771edf286ff753428b243f334e6041","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"a45d6dd3c11e921882a2e74c7c8710b975f2eaa7","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"4984277bc43f84d7506346a09b29af138246d54a","versionType":"git"},{"version":"111d746bb4767ad476f80fe49067e3df3d9a9375","status":"affected","lessThan":"61b101c6a150057b6d512421ed108aed16e822ea","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/bcm-vk/bcm_vk_msg.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","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"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/bcm-vk/bcm_vk_msg.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/bab66a9e30e39a06f3463b19f8c704386dfd5268"},{"url":"https://git.kernel.org/stable/c/679cfada6868723ccf162ec3b78c7402ff2405bf"},{"url":"https://git.kernel.org/stable/c/f7a8f4cbc8cede0be55220367dc52b126e2d39e5"},{"url":"https://git.kernel.org/stable/c/1df3926ed8771edf286ff753428b243f334e6041"},{"url":"https://git.kernel.org/stable/c/a45d6dd3c11e921882a2e74c7c8710b975f2eaa7"},{"url":"https://git.kernel.org/stable/c/4984277bc43f84d7506346a09b29af138246d54a"},{"url":"https://git.kernel.org/stable/c/61b101c6a150057b6d512421ed108aed16e822ea"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:04:47.240Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}