Medium [CVE-2026-64049] fix userspace-triggered crash on a2xx-a4xx
This medium-severity Red Hat Linux advisory covers CVE-2026-64049.
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Summary
In the Linux kernel, the following vulnerability has been resolved: drm/msm/adreno: fix userspace-triggered crash on a2xx-a4xx Before a5xx Adreno driver will not try fetching UBWC params (because those generations didn't support UBWC anyway), however it's still possible to query UBWC-related params from the userspace, triggering possible NULL pointer dereference.
Check for UBWC config in adreno_get_param() and return sane defaults if there is none. Patchwork: A flaw was found in the Linux kernel's Adreno Graphics Processing Unit (GPU) driver.
This vulnerability allows a local user to trigger a system crash by querying unsupported Universal Bandwidth Compression (UBWC) parameters from userspace. This can lead to a Denial of Service (DoS), making the system unavailable.
Red Hat severity: Moderate. Weakness: CWE-476.
Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 6 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 6 days ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 6 days ago·verify at source
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