drm/amd/display: fix a Null pointer dereference vulnerability
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix a Null pointer dereference vulnerability [Why] A null pointer dereference vulnerability exists in the AMD display driver's (DC module) cleanup function dc_destruct(). When display control context (dc->ctx) construction fails (due to memory allocation failure), this pointer remains NULL. During subsequent error handling when dc_destruct() is called, there's no NULL check before dereferencing the perf_trace member (dc->ctx->perf_trace), causing a kernel null pointer dereference crash. [How] Check if dc->ctx is non-NULL before dereferencing. (Updated commit text and removed unnecessary error message) (cherry picked from commit 9dd8e2ba268c636c240a918e0a31e6feaee19404)
CVE-2025-39705
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-2025-39705
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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "0d9f4f202de1522aadc7a827aba0ae92b3d70937",
"versionType": "git"
},
{
"status": "affected",
"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "0961673cc5f0055957aa46f25eb4ef6c07e00165",
"versionType": "git"
},
{
"status": "affected",
"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "4ade995b9b25b3c6e8dc42c27070340f1358d8c8",
"versionType": "git"
},
{
"status": "affected",
"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "1bcf63a44381691d6192872801f830ce3250e367",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/dc/core/dc.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.44",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.16.4",
"versionType": "semver",
"lessThanOrEqual": "6.16.*"
},
{
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/dc/core/dc.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-39705
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46014 · Revision 1
- Added to Heist Feed
- Publisher date