{"id":"CVE-2026-68259","state":"PUBLISHED","title":"drm/amdkfd: Check bounds in allocate_event_notification_slot","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check bounds in allocate_event_notification_slot\n\nThe valid event ids go from 0 to KFD_SIGNAL_EVENT_LIMIT\n\nallocate_event_notification_slot has an option to specify\nan event id to allocate at, used by CRIU. We weren't checking\nthe bounds on that value.\n\nCheck them.\n\nv2: Lower bounds check is unecessary because of idr_alloc\nalready rejecting negative numbers. Upper bounds check should\nbe KFD_SIGNAL_EVENT_LIMIT since the signal mode mappings might\nnot yet exist\n\n(cherry picked from commit 6853f1f6cbbeb3f53ebbbd7286536aeb2c5d5f50)","publishedAt":"2026-08-10T12:01:33.110Z","updatedAt":"2026-08-19T16:32:28.586Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"6884fc142b17f456caac50c14505f509bfbcd012","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"85eedff5f0c4aba5a66bc37a1bd6bcecd0d77b53","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"4622214f0542f64b02c250db0f9c677eeb032d9b","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"50319efb865f72db45f191c8709511746d58ee0a","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"abeeb1947d81610c65349db4d89c6151f270e136","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"bb52249fbbe948875155ccd45cd8d74bf4ae747b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_events.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.148","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","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":["drivers/gpu/drm/amd/amdkfd/kfd_events.c"]}],"references":["https://git.kernel.org/stable/c/6884fc142b17f456caac50c14505f509bfbcd012","https://git.kernel.org/stable/c/85eedff5f0c4aba5a66bc37a1bd6bcecd0d77b53","https://git.kernel.org/stable/c/4622214f0542f64b02c250db0f9c677eeb032d9b","https://git.kernel.org/stable/c/50319efb865f72db45f191c8709511746d58ee0a","https://git.kernel.org/stable/c/abeeb1947d81610c65349db4d89c6151f270e136","https://git.kernel.org/stable/c/bb52249fbbe948875155ccd45cd8d74bf4ae747b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68259.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68259","state":"PUBLISHED","datePublished":"2026-08-10T12:01:33.110Z","dateUpdated":"2026-08-19T16:32:28.586Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-30T09:28:09.378Z"},"containers":{"cna":{"title":"drm/amdkfd: Check bounds in allocate_event_notification_slot","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check bounds in allocate_event_notification_slot\n\nThe valid event ids go from 0 to KFD_SIGNAL_EVENT_LIMIT\n\nallocate_event_notification_slot has an option to specify\nan event id to allocate at, used by CRIU. We weren't checking\nthe bounds on that value.\n\nCheck them.\n\nv2: Lower bounds check is unecessary because of idr_alloc\nalready rejecting negative numbers. Upper bounds check should\nbe KFD_SIGNAL_EVENT_LIMIT since the signal mode mappings might\nnot yet exist\n\n(cherry picked from commit 6853f1f6cbbeb3f53ebbbd7286536aeb2c5d5f50)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"6884fc142b17f456caac50c14505f509bfbcd012","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"85eedff5f0c4aba5a66bc37a1bd6bcecd0d77b53","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"4622214f0542f64b02c250db0f9c677eeb032d9b","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"50319efb865f72db45f191c8709511746d58ee0a","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"abeeb1947d81610c65349db4d89c6151f270e136","versionType":"git"},{"version":"40e8a766a761f7fdc8530347527b344fddf6f1a8","status":"affected","lessThan":"bb52249fbbe948875155ccd45cd8d74bf4ae747b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/amdkfd/kfd_events.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.148","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","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":["drivers/gpu/drm/amd/amdkfd/kfd_events.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6884fc142b17f456caac50c14505f509bfbcd012"},{"url":"https://git.kernel.org/stable/c/85eedff5f0c4aba5a66bc37a1bd6bcecd0d77b53"},{"url":"https://git.kernel.org/stable/c/4622214f0542f64b02c250db0f9c677eeb032d9b"},{"url":"https://git.kernel.org/stable/c/50319efb865f72db45f191c8709511746d58ee0a"},{"url":"https://git.kernel.org/stable/c/abeeb1947d81610c65349db4d89c6151f270e136"},{"url":"https://git.kernel.org/stable/c/bb52249fbbe948875155ccd45cd8d74bf4ae747b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-19T16:32:28.586Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.6.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}