CVE-2026-68256 (GCVE-0-2026-68256)
Vulnerability from cvelistv5
Published
2026-08-10 12:01
Modified
2026-08-17 05:01
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference
prev_sink is unconditionally retained via dc_sink_retain at function
entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT
returns false without releasing prev_sink. All other return paths in the
function correctly call dc_sink_release(prev_sink), making this the only
missing cleanup.
(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)
References
Impacted products
{
"containers": {
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"product": "Linux",
"programFiles": [
"drivers/gpu/drm/amd/display/dc/link/link_detection.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"versions": [
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"versionType": "git"
},
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"programFiles": [
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],
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.3"
},
{
"lessThan": "6.3",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
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"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver"
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"status": "unaffected",
"version": "6.12.101",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.18.42",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "7.1.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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"vulnerable": true
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{
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{
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"negate": false,
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference\n\nprev_sink is unconditionally retained via dc_sink_retain at function\n entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT\n returns false without releasing prev_sink. All other return paths in the\n function correctly call dc_sink_release(prev_sink), making this the only\n missing cleanup.\n\n(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)"
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T05:01:47.968Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/f9922828a4ebd26286fbe0286cc61695e7d9b07b"
},
{
"url": "https://git.kernel.org/stable/c/a59e493567d18ef3858be9368acd132a01ebfa09"
},
{
"url": "https://git.kernel.org/stable/c/4ee77643e6194f2deb62fe62f04396f9825e27d8"
},
{
"url": "https://git.kernel.org/stable/c/58ea24dd96848626039296e9e8510270ec8dc4bf"
},
{
"url": "https://git.kernel.org/stable/c/a6e14b976be48eebd8769cb5b883a6af7fc5ade1"
}
],
"title": "drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference",
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}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-68256",
"datePublished": "2026-08-10T12:01:26.406Z",
"dateReserved": "2026-07-30T09:28:09.378Z",
"dateUpdated": "2026-08-17T05:01:47.968Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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