drm/vc4: hvs/v3d: Fix null dereference in unbind
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: hvs/v3d: Fix null dereference in unbind The hvs and v3d drivers use dev_get_drvdata(master) in their unbind functions. Since the vc4-drm gets removed before its dependent drivers (vc4_hvs/vc4_v3d) the vc4_hvs_unbind/vc4_v3d_unbind functions try to get drvdata of its master and fails with a null dereference error. Use the data pointer passed to the unbind functions directly instead of dev_get_drvdata(master). This avoids using potentially freed memory.
CVE-2026-68303
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-2026-68303
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": "c8b75bca92cbf064b9fa125fc74a85994452e935",
"lessThan": "3be8dcc1a5854cf24cc332e0d6fc865c47ff49a1",
"versionType": "git"
},
{
"status": "affected",
"version": "c8b75bca92cbf064b9fa125fc74a85994452e935",
"lessThan": "8f62aae059e06746a18a00af27179c3c0f17f4c7",
"versionType": "git"
},
{
"status": "affected",
"version": "c8b75bca92cbf064b9fa125fc74a85994452e935",
"lessThan": "708688ec31ac6b35103ba364dc300a09930079d4",
"versionType": "git"
},
{
"status": "affected",
"version": "c8b75bca92cbf064b9fa125fc74a85994452e935",
"lessThan": "261f0a3f0ac03248284f5116d3258f89c9642215",
"versionType": "git"
},
{
"status": "affected",
"version": "c8b75bca92cbf064b9fa125fc74a85994452e935",
"lessThan": "7dc3680b7ffe01add3e9299fde8471d2dd53a8ae",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/vc4/vc4_hvs.c",
"drivers/gpu/drm/vc4/vc4_v3d.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/vc4/vc4_hvs.c",
"drivers/gpu/drm/vc4/vc4_v3d.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68303
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46461 · Revision 1
- Added to Heist Feed
- Publisher date