drm/amd/powerplay: fix VoltageObjectInfo zero-stride loop and OOB read
In the Linux kernel, the following vulnerability has been resolved: drm/amd/powerplay: fix VoltageObjectInfo zero-stride loop and OOB read Reject voltage objects whose usSize is smaller than the header or would advance the cursor past the table end, preventing an infinite loop or heap OOB read when the VBIOS supplies a malformed VoltageObjectInfo table.
CVE-2026-93179
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93179
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "c82baa28184356a75c0157129f88af42b2e7b695",
"lessThan": "574af7c61f2bed37baa3b60669e428d24d2c9ae8",
"versionType": "git"
},
{
"status": "affected",
"version": "c82baa28184356a75c0157129f88af42b2e7b695",
"lessThan": "203ffe648948ca3c2f55b21118945a7a6d0884aa",
"versionType": "git"
},
{
"status": "affected",
"version": "c82baa28184356a75c0157129f88af42b2e7b695",
"lessThan": "0a6c9b3801903b6db91f3cbf148646b501dbded3",
"versionType": "git"
},
{
"status": "affected",
"version": "c82baa28184356a75c0157129f88af42b2e7b695",
"lessThan": "83c680de6d41d627c077dedb24f89d9e5be0e2a2",
"versionType": "git"
},
{
"status": "affected",
"version": "c82baa28184356a75c0157129f88af42b2e7b695",
"lessThan": "5d3cc8e388464f485d0944b87b8f9426e637d082",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c",
"drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomfwctrl.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c",
"drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomfwctrl.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93179
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48727 · Revision 1
- Added to Heist Feed
- Publisher date