{"id":"CVE-2024-40921","state":"PUBLISHED","title":"net: bridge: mst: pass vlan group directly to br_mst_vlan_set_state","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: mst: pass vlan group directly to br_mst_vlan_set_state\n\nPass the already obtained vlan group pointer to br_mst_vlan_set_state()\ninstead of dereferencing it again. Each caller has already correctly\ndereferenced it for their context. This change is required for the\nfollowing suspicious RCU dereference fix. No functional changes\nintended.","publishedAt":"2024-07-12T12:25:02.907Z","updatedAt":"2026-05-23T15:51:04.404Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8ca9a750fc711911ef616ceb627d07357b04545e","status":"affected","lessThan":"09f4337c27f5bdeb8646a6db91488cc2f7d537ff","versionType":"git"},{"version":"4488617e5e995a09abe4d81add5fb165674edb59","status":"affected","lessThan":"a6cc9e9a651b9861efa068c164ee62dfba68c6ca","versionType":"git"},{"version":"e43dd2b1ec746e105b7db5f9ad6ef14685a615a4","status":"affected","lessThan":"d2dc02775fc0c4eacaee833a0637e5958884a8e5","versionType":"git"},{"version":"3a7c1661ae1383364cd6092d851f5e5da64d476b","status":"affected","lessThan":"36c92936e868601fa1f43da6758cf55805043509","versionType":"git"},{"version":"a2b01e65d9ba8af2bb086d3b7288ca53a07249ac","status":"affected","versionType":"git"},{"version":"6.8.12","status":"affected","lessThan":"6.9","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bridge/br_mst.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6.1.93","status":"affected","lessThan":"6.1.95","versionType":"semver"},{"version":"6.6.33","status":"affected","lessThan":"6.6.35","versionType":"semver"},{"version":"6.9.3","status":"affected","lessThan":"6.9.6","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bridge/br_mst.c"]}],"references":["https://git.kernel.org/stable/c/09f4337c27f5bdeb8646a6db91488cc2f7d537ff","https://git.kernel.org/stable/c/a6cc9e9a651b9861efa068c164ee62dfba68c6ca","https://git.kernel.org/stable/c/d2dc02775fc0c4eacaee833a0637e5958884a8e5","https://git.kernel.org/stable/c/36c92936e868601fa1f43da6758cf55805043509","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:39.287Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/40xxx/CVE-2024-40921.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-40921","state":"PUBLISHED","datePublished":"2024-07-12T12:25:02.907Z","dateUpdated":"2026-05-23T15:51:04.404Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-07-12T12:17:45.582Z"},"containers":{"cna":{"title":"net: bridge: mst: pass vlan group directly to br_mst_vlan_set_state","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: mst: pass vlan group directly to br_mst_vlan_set_state\n\nPass the already obtained vlan group pointer to br_mst_vlan_set_state()\ninstead of dereferencing it again. Each caller has already correctly\ndereferenced it for their context. This change is required for the\nfollowing suspicious RCU dereference fix. No functional changes\nintended."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8ca9a750fc711911ef616ceb627d07357b04545e","status":"affected","lessThan":"09f4337c27f5bdeb8646a6db91488cc2f7d537ff","versionType":"git"},{"version":"4488617e5e995a09abe4d81add5fb165674edb59","status":"affected","lessThan":"a6cc9e9a651b9861efa068c164ee62dfba68c6ca","versionType":"git"},{"version":"e43dd2b1ec746e105b7db5f9ad6ef14685a615a4","status":"affected","lessThan":"d2dc02775fc0c4eacaee833a0637e5958884a8e5","versionType":"git"},{"version":"3a7c1661ae1383364cd6092d851f5e5da64d476b","status":"affected","lessThan":"36c92936e868601fa1f43da6758cf55805043509","versionType":"git"},{"version":"a2b01e65d9ba8af2bb086d3b7288ca53a07249ac","status":"affected","versionType":"git"},{"version":"6.8.12","status":"affected","lessThan":"6.9","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bridge/br_mst.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6.1.93","status":"affected","lessThan":"6.1.95","versionType":"semver"},{"version":"6.6.33","status":"affected","lessThan":"6.6.35","versionType":"semver"},{"version":"6.9.3","status":"affected","lessThan":"6.9.6","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bridge/br_mst.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/09f4337c27f5bdeb8646a6db91488cc2f7d537ff"},{"url":"https://git.kernel.org/stable/c/a6cc9e9a651b9861efa068c164ee62dfba68c6ca"},{"url":"https://git.kernel.org/stable/c/d2dc02775fc0c4eacaee833a0637e5958884a8e5"},{"url":"https://git.kernel.org/stable/c/36c92936e868601fa1f43da6758cf55805043509"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:51:04.404Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.93","versionEndExcluding":"6.1.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.33","versionEndExcluding":"6.6.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9.3","versionEndExcluding":"6.9.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8.12"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/09f4337c27f5bdeb8646a6db91488cc2f7d537ff","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/a6cc9e9a651b9861efa068c164ee62dfba68c6ca","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/d2dc02775fc0c4eacaee833a0637e5958884a8e5","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/36c92936e868601fa1f43da6758cf55805043509","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T21:57:52.259Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-40921","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T17:05:30.546464Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-11T17:34:28.825Z"}}]}}}