CVE-2023-53552

Summary

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

drm/i915: mark requests for GuC virtual engines to avoid use-after-free

References to i915_requests may be trapped by userspace inside a sync_file or dmabuf (dma-resv) and held indefinitely across different proceses. To counter-act the memory leaks, we try to not to keep references from the request past their completion. On the other side on fence release we need to know if rq->engine is valid and points to hw engine (true for non-virtual requests). To make it possible extra bit has been added to rq->execution_mask, for marking virtual engines.

(cherry picked from commit 280410677af763f3871b93e794a199cfcf6fb580)

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxbcb9aa45d5a0e11ef91245330c53cde214d15e8d < 8017a27cec32eac8c8f9430b0a3055840136b856affected
LinuxLinuxbcb9aa45d5a0e11ef91245330c53cde214d15e8d < 7fb464d52fa41c31a6fd1ad82888e67c65935d94affected
LinuxLinuxbcb9aa45d5a0e11ef91245330c53cde214d15e8d < 5eefc5307c983b59344a4cb89009819f580c84faaffected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.1.54 <= 6.1.*unaffected
LinuxLinux6.5.4 <= 6.5.*unaffected
LinuxLinux6.6 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References