CVE-2026-53325: agp/amd64: Fix broken error propagation in agp_amd64_probe()
agp/amd64: Fix broken error propagation in agpamd64probe()
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.144.1-1 - Configuration
Fix broken error propagation in agp_amd64_probe(): after cache_nbs() returns, treat any negative value (< 0) as an error so the probe aborts properly (instead of only comparing against exactly -1), preventing NULL dereference when no AMD northbridges are found.
Linux kernel AGP driver (agp/amd64) Error check in agp_amd64_probe() for cache_nbs() return value = Check for any negative error (< 0) instead of exactly -1
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53325?
The severity of CVE-2026-53325 is rated at risk level 34.
How do I fix CVE-2026-53325?
To fix CVE-2026-53325, you should update your Linux kernel to the latest version that includes the patch.
What systems are affected by CVE-2026-53325?
CVE-2026-53325 affects systems running the AMD64 AGP driver in virtualized environments without a physical AMD northbridge.
What impact does CVE-2026-53325 have?
CVE-2026-53325 can lead to a NULL pointer dereference, causing a crash in the AMD64 AGP driver.
Is CVE-2026-53325 specific to any kernel version?
CVE-2026-53325 applies to specific Linux kernel versions that utilize the AMD64 AGP driver and may not affect all kernel builds.