CVE-2023-39198

Description

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.

Reserved 2023-07-25 | Published 2023-11-09 | Updated 2024-11-15 | Assigner redhat

Problem types

Use After Free

Product status

Default status
affected

0:4.18.0-553.rt7.342.el8_10 before *
unaffected

Default status
affected

0:4.18.0-553.el8_10 before *
unaffected

Default status
affected

0:5.14.0-427.13.1.el9_4 before *
unaffected

Default status
affected

0:5.14.0-427.13.1.el9_4 before *
unaffected

Default status
unknown

Default status
unknown

Default status
unknown

Default status
affected

Timeline

2023-06-28:	Reported to Red Hat.
2023-08-17:	Made public.

References

access.redhat.com/errata/RHSA-2024:2394 (RHSA-2024:2394) vendor-advisory

access.redhat.com/errata/RHSA-2024:2950 (RHSA-2024:2950) vendor-advisory

access.redhat.com/errata/RHSA-2024:3138 (RHSA-2024:3138) vendor-advisory

access.redhat.com/security/cve/CVE-2023-39198 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2218332 (RHBZ#2218332) issue-tracking

cve.org (CVE-2023-39198)

nvd.nist.gov (CVE-2023-39198)

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