CVE-2026-68104 (GCVE-0-2026-68104)
Vulnerability from cvelistv5
Published
2026-08-10 11:58
Modified
2026-08-19 16:29
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: invoke pm_genpd_remove() before freeing genpd
Call pm_genpd_remove() to unregister from global list prior to releasing
acp_genpd memory, and clear the pointer after free.
(cherry picked from commit cd8650d7a91ee8b768e202354672553faa5cc1f2)
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 25030321ba2860c56651429a4f28d94a6483d952 Version: 25030321ba2860c56651429a4f28d94a6483d952 Version: 25030321ba2860c56651429a4f28d94a6483d952 Version: 25030321ba2860c56651429a4f28d94a6483d952 Version: 25030321ba2860c56651429a4f28d94a6483d952 Version: 25030321ba2860c56651429a4f28d94a6483d952 Version: 25030321ba2860c56651429a4f28d94a6483d952 Version: 25030321ba2860c56651429a4f28d94a6483d952 |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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{
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"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.6"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.148",
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},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.265",
"versionStartIncluding": "4.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
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},
{
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"vulnerable": true
},
{
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{
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"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: invoke pm_genpd_remove() before freeing genpd\n\nCall pm_genpd_remove() to unregister from global list prior to releasing\nacp_genpd memory, and clear the pointer after free.\n\n(cherry picked from commit cd8650d7a91ee8b768e202354672553faa5cc1f2)"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The bug is in acp_hw_fini during amdgpu driver teardown (amdgpu_pci_remove/amdgpu_driver_unload_kms), reachable via local PCI unbind/module unload or a failed amdgpu init cleanup after opening a DRM render node; there is no network-facing entry point.\nAC:L - Once the AMDGPU ACP block has been initialized, calling acp_hw_fini deterministically frees acp_genpd without unregistering it from the global genpd list; no race or special memory layout is required to leave a dangling list entry.\nPR:L - Unprivileged users with access to /dev/dri/renderD* can autoload amdgpu and trigger the fini path if initialization fails after ACP setup; the same bug also fires on privileged driver unload/hot-unplug teardown of AMDGPU on ACP-capable APUs (Carrizo/Stoney).\nUI:N - Exploitation does not require any victim interaction such as clicking links or mounting filesystems; triggering driver teardown or a failed init cleanup is sufficient once the attacker can open the DRM device or unload the driver.\nS:U - The use-after-free corrupts kernel heap metadata/objects in the same kernel security domain during AMDGPU/ACP teardown; it does not by itself cross VM, container, or IOMMU boundaries to impact a separate authority.\nC:H - Freeing the generic_pm_domain while it remains linked on the global gpd_list is a kernel use-after-free; subsequent genpd list walks can read attacker-influenced freed memory, enabling information disclosure and kernel pointer leaks.\nI:H - The dangling genpd entry allows the power-domain core to perform reads/writes through a freed acp_pm_domain/generic_pm_domain object, providing a standard heap UAF primitive that can be developed into arbitrary kernel memory corruption or code execution.\nA:H - Dereferencing the freed genpd from the global list during later power-management operations can cause kernel oops/panic or hang, and the UAF can be leveraged for a reliable denial-of-service even when full exploitation is not attempted."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:29:17.502Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/4d7c10b0bf09d90c81818752decbdb1966b62702"
},
{
"url": "https://git.kernel.org/stable/c/493adf29d66f23888f0e29888b6bc9512acd0825"
},
{
"url": "https://git.kernel.org/stable/c/2e406b86144c1f732eb344f1f1e09043856cfc33"
},
{
"url": "https://git.kernel.org/stable/c/bdfc7f1e0900ef1361b828c4f69b72701f8a0a86"
},
{
"url": "https://git.kernel.org/stable/c/5c0a82283271759fff445ac27182072f200a888c"
},
{
"url": "https://git.kernel.org/stable/c/08fee493e0261f9e4120a5c8e7e42e8a723574e8"
},
{
"url": "https://git.kernel.org/stable/c/930a5dc3df4aa5e10393134bd5313d616dbebaf6"
},
{
"url": "https://git.kernel.org/stable/c/28c9b3c5dc35cc790d11e26ca3fc6e068be63998"
}
],
"title": "drm/amdgpu: invoke pm_genpd_remove() before freeing genpd",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-68104",
"datePublished": "2026-08-10T11:58:20.614Z",
"dateReserved": "2026-07-30T09:28:09.368Z",
"dateUpdated": "2026-08-19T16:29:17.502Z",
"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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