{"id":"CVE-2026-31547","state":"PUBLISHED","title":"drm/xe: Fix missing runtime PM reference in ccs_mode_store","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix missing runtime PM reference in ccs_mode_store\n\nccs_mode_store() calls xe_gt_reset() which internally invokes\nxe_pm_runtime_get_noresume(). That function requires the caller\nto already hold an outer runtime PM reference and warns if none\nis held:\n\n  [46.891177] xe 0000:03:00.0: [drm] Missing outer runtime PM protection\n  [46.891178] WARNING: drivers/gpu/drm/xe/xe_pm.c:885 at\n  xe_pm_runtime_get_noresume+0x8b/0xc0\n\nFix this by protecting xe_gt_reset() with the scope-based\nguard(xe_pm_runtime)(xe), which is the preferred form when\nthe reference lifetime matches a single scope.\n\nv2:\n- Use scope-based guard(xe_pm_runtime)(xe) (Shuicheng)\n- Update commit message accordingly\n\n(cherry picked from commit 7937ea733f79b3f25e802a0c8360bf7423856f36)","publishedAt":"2026-04-24T14:33:15.262Z","updatedAt":"2026-05-11T22:10:53.255Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"480b358e7d8ef69fd8f1b0cad6e07c7d70a36ee4","status":"affected","lessThan":"c409ecce9adcf815e86bc2f68834982e5a9c4e76","versionType":"git"},{"version":"480b358e7d8ef69fd8f1b0cad6e07c7d70a36ee4","status":"affected","lessThan":"65d046b2d8e0d6d855379a981869005fd6b6a41b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_gt_ccs_mode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"6.19.10","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/xe/xe_gt_ccs_mode.c"]}],"references":["https://git.kernel.org/stable/c/c409ecce9adcf815e86bc2f68834982e5a9c4e76","https://git.kernel.org/stable/c/65d046b2d8e0d6d855379a981869005fd6b6a41b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31547.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31547","state":"PUBLISHED","datePublished":"2026-04-24T14:33:15.262Z","dateUpdated":"2026-05-11T22:10:53.255Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-09T15:48:24.114Z"},"containers":{"cna":{"title":"drm/xe: Fix missing runtime PM reference in ccs_mode_store","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix missing runtime PM reference in ccs_mode_store\n\nccs_mode_store() calls xe_gt_reset() which internally invokes\nxe_pm_runtime_get_noresume(). That function requires the caller\nto already hold an outer runtime PM reference and warns if none\nis held:\n\n  [46.891177] xe 0000:03:00.0: [drm] Missing outer runtime PM protection\n  [46.891178] WARNING: drivers/gpu/drm/xe/xe_pm.c:885 at\n  xe_pm_runtime_get_noresume+0x8b/0xc0\n\nFix this by protecting xe_gt_reset() with the scope-based\nguard(xe_pm_runtime)(xe), which is the preferred form when\nthe reference lifetime matches a single scope.\n\nv2:\n- Use scope-based guard(xe_pm_runtime)(xe) (Shuicheng)\n- Update commit message accordingly\n\n(cherry picked from commit 7937ea733f79b3f25e802a0c8360bf7423856f36)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"480b358e7d8ef69fd8f1b0cad6e07c7d70a36ee4","status":"affected","lessThan":"c409ecce9adcf815e86bc2f68834982e5a9c4e76","versionType":"git"},{"version":"480b358e7d8ef69fd8f1b0cad6e07c7d70a36ee4","status":"affected","lessThan":"65d046b2d8e0d6d855379a981869005fd6b6a41b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/xe/xe_gt_ccs_mode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"6.19.10","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/xe/xe_gt_ccs_mode.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c409ecce9adcf815e86bc2f68834982e5a9c4e76"},{"url":"https://git.kernel.org/stable/c/65d046b2d8e0d6d855379a981869005fd6b6a41b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:10:53.255Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}