{"id":"CVE-2024-57876","state":"PUBLISHED","title":"drm/dp_mst: Fix resetting msg rx state after topology removal","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp_mst: Fix resetting msg rx state after topology removal\n\nIf the MST topology is removed during the reception of an MST down reply\nor MST up request sideband message, the\ndrm_dp_mst_topology_mgr::up_req_recv/down_rep_recv states could be reset\nfrom one thread via drm_dp_mst_topology_mgr_set_mst(false), racing with\nthe reading/parsing of the message from another thread via\ndrm_dp_mst_handle_down_rep() or drm_dp_mst_handle_up_req(). The race is\npossible since the reader/parser doesn't hold any lock while accessing\nthe reception state. This in turn can lead to a memory corruption in the\nreader/parser as described by commit bd2fccac61b4 (\"drm/dp_mst: Fix MST\nsideband message body length check\").\n\nFix the above by resetting the message reception state if needed before\nreading/parsing a message. Another solution would be to hold the\ndrm_dp_mst_topology_mgr::lock for the whole duration of the message\nreception/parsing in drm_dp_mst_handle_down_rep() and\ndrm_dp_mst_handle_up_req(), however this would require a bigger change.\nSince the fix is also needed for stable, opting for the simpler solution\nin this patch.","publishedAt":"2025-01-11T14:49:02.550Z","updatedAt":"2026-05-23T15:56:11.973Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b30fcedeba643ca16eaa6212c1245598b7cd830d","status":"affected","lessThan":"94b33b2d7640e807869451384eb88321dd0ffbd4","versionType":"git"},{"version":"1d082618bbf3b6755b8cc68c0a8122af2842d593","status":"affected","lessThan":"d834d20d2e86c52ed5cab41763fa61e6071680ef","versionType":"git"},{"version":"1d082618bbf3b6755b8cc68c0a8122af2842d593","status":"affected","lessThan":"be826b4451fd187a7c0b04be4f8243d5df6e0450","versionType":"git"},{"version":"1d082618bbf3b6755b8cc68c0a8122af2842d593","status":"affected","lessThan":"a6fa67d26de385c3c7a23c1e109a0e23bfda4ec7","versionType":"git"},{"version":"ee4a4282d78d96e07e714c28ca54679713fa2157","status":"affected","versionType":"git"},{"version":"db35e49413a4d03ea0c003598803e49956f59324","status":"affected","versionType":"git"},{"version":"a579ed4613b5a64074963988ad481e43cf3b917b","status":"affected","versionType":"git"},{"version":"6.1.18","status":"affected","lessThan":"6.1.120","versionType":"semver"},{"version":"5.10.173","status":"affected","lessThan":"5.11","versionType":"semver"},{"version":"5.15.100","status":"affected","lessThan":"5.16","versionType":"semver"},{"version":"6.2.5","status":"affected","lessThan":"6.3","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/display/drm_dp_mst_topology.c","include/drm/display/drm_dp_mst_helper.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.3","versionType":"semver"},{"version":"6.1.120","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.66","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.5","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/display/drm_dp_mst_topology.c","include/drm/display/drm_dp_mst_helper.h"]}],"references":["https://git.kernel.org/stable/c/94b33b2d7640e807869451384eb88321dd0ffbd4","https://git.kernel.org/stable/c/d834d20d2e86c52ed5cab41763fa61e6071680ef","https://git.kernel.org/stable/c/be826b4451fd187a7c0b04be4f8243d5df6e0450","https://git.kernel.org/stable/c/a6fa67d26de385c3c7a23c1e109a0e23bfda4ec7","https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:08:12.933Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/57xxx/CVE-2024-57876.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-57876","state":"PUBLISHED","datePublished":"2025-01-11T14:49:02.550Z","dateUpdated":"2026-05-23T15:56:11.973Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-01-11T14:45:42.023Z"},"containers":{"cna":{"title":"drm/dp_mst: Fix resetting msg rx state after topology removal","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/dp_mst: Fix resetting msg rx state after topology removal\n\nIf the MST topology is removed during the reception of an MST down reply\nor MST up request sideband message, the\ndrm_dp_mst_topology_mgr::up_req_recv/down_rep_recv states could be reset\nfrom one thread via drm_dp_mst_topology_mgr_set_mst(false), racing with\nthe reading/parsing of the message from another thread via\ndrm_dp_mst_handle_down_rep() or drm_dp_mst_handle_up_req(). The race is\npossible since the reader/parser doesn't hold any lock while accessing\nthe reception state. This in turn can lead to a memory corruption in the\nreader/parser as described by commit bd2fccac61b4 (\"drm/dp_mst: Fix MST\nsideband message body length check\").\n\nFix the above by resetting the message reception state if needed before\nreading/parsing a message. Another solution would be to hold the\ndrm_dp_mst_topology_mgr::lock for the whole duration of the message\nreception/parsing in drm_dp_mst_handle_down_rep() and\ndrm_dp_mst_handle_up_req(), however this would require a bigger change.\nSince the fix is also needed for stable, opting for the simpler solution\nin this patch."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b30fcedeba643ca16eaa6212c1245598b7cd830d","status":"affected","lessThan":"94b33b2d7640e807869451384eb88321dd0ffbd4","versionType":"git"},{"version":"1d082618bbf3b6755b8cc68c0a8122af2842d593","status":"affected","lessThan":"d834d20d2e86c52ed5cab41763fa61e6071680ef","versionType":"git"},{"version":"1d082618bbf3b6755b8cc68c0a8122af2842d593","status":"affected","lessThan":"be826b4451fd187a7c0b04be4f8243d5df6e0450","versionType":"git"},{"version":"1d082618bbf3b6755b8cc68c0a8122af2842d593","status":"affected","lessThan":"a6fa67d26de385c3c7a23c1e109a0e23bfda4ec7","versionType":"git"},{"version":"ee4a4282d78d96e07e714c28ca54679713fa2157","status":"affected","versionType":"git"},{"version":"db35e49413a4d03ea0c003598803e49956f59324","status":"affected","versionType":"git"},{"version":"a579ed4613b5a64074963988ad481e43cf3b917b","status":"affected","versionType":"git"},{"version":"6.1.18","status":"affected","lessThan":"6.1.120","versionType":"semver"},{"version":"5.10.173","status":"affected","lessThan":"5.11","versionType":"semver"},{"version":"5.15.100","status":"affected","lessThan":"5.16","versionType":"semver"},{"version":"6.2.5","status":"affected","lessThan":"6.3","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/display/drm_dp_mst_topology.c","include/drm/display/drm_dp_mst_helper.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.3","versionType":"semver"},{"version":"6.1.120","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.66","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.5","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/display/drm_dp_mst_topology.c","include/drm/display/drm_dp_mst_helper.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/94b33b2d7640e807869451384eb88321dd0ffbd4"},{"url":"https://git.kernel.org/stable/c/d834d20d2e86c52ed5cab41763fa61e6071680ef"},{"url":"https://git.kernel.org/stable/c/be826b4451fd187a7c0b04be4f8243d5df6e0450"},{"url":"https://git.kernel.org/stable/c/a6fa67d26de385c3c7a23c1e109a0e23bfda4ec7"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:56:11.973Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.18","versionEndExcluding":"6.1.120"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.6.66"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.12.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.173"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.100"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2.5"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T20:54:49.904Z"}}]}}}