CVE-2023-39198

Summary

A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat Enterprise Linux 80:4.18.0-553.rt7.342.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 80:4.18.0-553.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 90:5.14.0-427.13.1.el9_4 < *unaffected
Red HatRed Hat Enterprise Linux 90:5.14.0-427.13.1.el9_4 < *unaffected

Weaknesses

  • CWE-416: Use After Free

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References