AZL-66983
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-66983.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-66983
- Upstream
- Published
- 2025-09-05T18:15:47Z
- Modified
- 2026-04-01T05:21:05.863839Z
- Summary
- CVE-2025-39705 affecting package kernel 6.6.126.1-1
- Details
-
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 dcdestruct(). When display control context (dc->ctx) construction fails (due to memory allocation failure), this pointer remains NULL. During subsequent error handling when dcdestruct() is called, there's no NULL check before dereferencing the perftrace member (dc->ctx->perftrace), 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)
- References