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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
0:4.18.0-553.rt7.342.el8_10 to < *unaffected
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
0:4.18.0-553.el8_10 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:5.14.0-427.13.1.el9_4 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:5.14.0-427.13.1.el9_4 to < *unaffected
Red Hat Red Hat Enterprise Linux 6
Default version status: unknown
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
References
- https://access.redhat.com/errata/RHSA-2024:2394 ↗
- https://access.redhat.com/errata/RHSA-2024:2950 ↗
- https://access.redhat.com/errata/RHSA-2024:3138 ↗
- https://access.redhat.com/security/cve/CVE-2023-39198 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2218332 ↗
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html ↗