CVE-2026-80903

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/oa: Fix sync entry leak on OA config emit failure

xe_oa_emit_oa_config() releases the sync entries and the syncs array

only on its success path. When it fails before the point of no return

(fence allocation, config buffer allocation or batch submission), it

returns without touching stream->syncs.

The stream open path handles such failures in the caller, but

xe_oa_config_locked() propagates the error without any cleanup, so the

syncs array and the fence references held by the parsed entries are

leaked. The next config ioctl overwrites stream->syncs, making the

memory unreachable for good.

Clean up the parsed syncs when xe_oa_emit_oa_config() fails, matching

the cleanup done by the stream open error path.

(cherry picked from commit 8af97b3da2cfce04e6b457c6eb17ed3c1daf912b)

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References