{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99151", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.396Z", "datePublished": "2026-10-28T10:35:06.866Z", "dateUpdated": "2026-10-28T10:35:06.866Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-28T10:35:06.866Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix NULL sink dereference in USB4 bandwidth functions\n\nallocate_usb4_bandwidth_for_stream() and allocate_usb4_bandwidth() both\nuse ASSERT(stream->sink) before dereferencing stream->sink->link. ASSERT\nis compiled out in production builds, so a NULL stream->sink causes a\nNULL pointer dereference.\n\nlink_set_dpms_off() already guards two earlier accesses to stream->sink\nwith explicit NULL checks, confirming that stream->sink can legitimately\nbe NULL. The subsequent call to deallocate_usb4_bandwidth() had no\nequivalent guard.\n\nReplace the ASSERT() calls with proper NULL checks that return false\nearly, and add a matching stream->sink guard at the call site in\nlink_set_dpms_off() consistent with the surrounding pattern.\n\nv2: Keep the existing ASSERT() calls for diagnostics (to report\n unexpected NULL sink), and add explicit NULL checks that return false\n before dereferencing stream->sink. Also add a matching stream->sink\n guard at the deallocation call site in link_set_dpms_off(). (Alex)\n\n(cherry picked from commit 98029a0ce61feb52c563f65349dd9b25f672e355)"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/display/dc/link/link_dpms.c"], "versions": [{"version": "0b1eebd359685dd681f6e0df5540a5bb985a27bf", "lessThan": "4c8b5e5b9776ad08138d79b14238c5742b32911b", "status": "affected", "versionType": "git"}, {"version": "8fa813b7fd1eccbed13e126166cf764f1f11a7d3", "lessThan": "55a67aa89342545b89f469dea6f29bfb6fac6f3d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/display/dc/link/link_dpms.c"], "versions": [{"version": "7.2.9", "lessThan": "7.2.13", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.2.9", "versionEndExcluding": "7.2.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4c8b5e5b9776ad08138d79b14238c5742b32911b"}, {"url": "https://git.kernel.org/stable/c/55a67aa89342545b89f469dea6f29bfb6fac6f3d"}], "title": "drm/amd/display: Fix NULL sink dereference in USB4 bandwidth functions", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/dc/link/link_dpms.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "4c8b5e5b9776ad08138d79b14238c5742b32911b", "status": "affected", "version": "0b1eebd359685dd681f6e0df5540a5bb985a27bf", "versionType": "git"}, {"lessThan": "55a67aa89342545b89f469dea6f29bfb6fac6f3d", "status": "affected", "version": "8fa813b7fd1eccbed13e126166cf764f1f11a7d3", "versionType": "git"}]}, {"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/dc/link/link_dpms.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7.2.13", "status": "affected", "version": "7.2.9", "versionType": "semver"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix NULL sink dereference in USB4 bandwidth functions\n\nallocate_usb4_bandwidth_for_stream() and allocate_usb4_bandwidth() both\nuse ASSERT(stream->sink) before dereferencing stream->sink->link. ASSERT\nis compiled out in production builds, so a NULL stream->sink causes a\nNULL pointer dereference.\n\nlink_set_dpms_off() already guards two earlier accesses to stream->sink\nwith explicit NULL checks, confirming that stream->sink can legitimately\nbe NULL. The subsequent call to deallocate_usb4_bandwidth() had no\nequivalent guard.\n\nReplace the ASSERT() calls with proper NULL checks that return false\nearly, and add a matching stream->sink guard at the call site in\nlink_set_dpms_off() consistent with the surrounding pattern.\n\nv2: Keep the existing ASSERT() calls for diagnostics (to report\n unexpected NULL sink), and add explicit NULL checks that return false\n before dereferencing stream->sink. Also add a matching stream->sink\n guard at the deallocation call site in link_set_dpms_off(). (Alex)\n\n(cherry picked from commit 98029a0ce61feb52c563f65349dd9b25f672e355)"}], "id": "CVE-2026-99151", "lastModified": "2026-10-28T11:17:35.207", "metrics": {}, "published": "2026-10-28T11:17:35.207", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4c8b5e5b9776ad08138d79b14238c5742b32911b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/55a67aa89342545b89f469dea6f29bfb6fac6f3d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0b1eebd359685dd681f6e0df5540a5bb985a27bf,4c8b5e5b9776ad08138d79b14238c5742b32911b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8fa813b7fd1eccbed13e126166cf764f1f11a7d3,55a67aa89342545b89f469dea6f29bfb6fac6f3d)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.2.9,7.2.13)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0b1eebd359685dd681f6e0df5540a5bb985a27bf,4c8b5e5b9776ad08138d79b14238c5742b32911b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8fa813b7fd1eccbed13e126166cf764f1f11a7d3,55a67aa89342545b89f469dea6f29bfb6fac6f3d)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.2.9,7.2.13)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-28T12:15:14.880818+00:00", "updated": "2026-10-28T14:15:18.414211+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476"]}