{"id":"CVE-2026-98926","state":"PUBLISHED","title":"drm/amd/display: Remove sink usage from DPMS","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Remove sink usage from DPMS\n\n[Why]\nstream->sink is optional and can be null, so should always be checked\nbefore dereference. Additionally, most of its usage in DPMS sequences\nis for stream->sink->link, which can be replaced with stream->link,\nas the two should always be the same.\n\n[How]\n* Replace stream->sink->link in DPMS on/off\n* Add assert to USB4 BW allocation where sink is required\n* Avoid inconsistencies in resource access, e.g. don't repeat\nstream->link after it was already saved to a local variable\n* Pull out effective VPG calculation to helper getter\n* Formatting fixes","publishedAt":"2026-10-23T12:05:54.511Z","updatedAt":"2026-10-26T06:56:50.146Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"052fa7e8c9a92e3804ba9dba7c2550a9684d3441","status":"affected","lessThan":"0b1eebd359685dd681f6e0df5540a5bb985a27bf","versionType":"git"},{"version":"052fa7e8c9a92e3804ba9dba7c2550a9684d3441","status":"affected","lessThan":"8fa813b7fd1eccbed13e126166cf764f1f11a7d3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/link/link_dpms.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"7.2.9","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/gpu/drm/amd/display/dc/link/link_dpms.c"]}],"references":["https://git.kernel.org/stable/c/0b1eebd359685dd681f6e0df5540a5bb985a27bf","https://git.kernel.org/stable/c/8fa813b7fd1eccbed13e126166cf764f1f11a7d3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98926.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98926","state":"PUBLISHED","datePublished":"2026-10-23T12:05:54.511Z","dateUpdated":"2026-10-26T06:56:50.146Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.380Z"},"containers":{"cna":{"title":"drm/amd/display: Remove sink usage from DPMS","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Remove sink usage from DPMS\n\n[Why]\nstream->sink is optional and can be null, so should always be checked\nbefore dereference. Additionally, most of its usage in DPMS sequences\nis for stream->sink->link, which can be replaced with stream->link,\nas the two should always be the same.\n\n[How]\n* Replace stream->sink->link in DPMS on/off\n* Add assert to USB4 BW allocation where sink is required\n* Avoid inconsistencies in resource access, e.g. don't repeat\nstream->link after it was already saved to a local variable\n* Pull out effective VPG calculation to helper getter\n* Formatting fixes"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"052fa7e8c9a92e3804ba9dba7c2550a9684d3441","status":"affected","lessThan":"0b1eebd359685dd681f6e0df5540a5bb985a27bf","versionType":"git"},{"version":"052fa7e8c9a92e3804ba9dba7c2550a9684d3441","status":"affected","lessThan":"8fa813b7fd1eccbed13e126166cf764f1f11a7d3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/amd/display/dc/link/link_dpms.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"7.2.9","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/gpu/drm/amd/display/dc/link/link_dpms.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0b1eebd359685dd681f6e0df5540a5bb985a27bf"},{"url":"https://git.kernel.org/stable/c/8fa813b7fd1eccbed13e126166cf764f1f11a7d3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-26T06:56:50.146Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}