NULL Pointer Dereference Affecting libxkbcommon0 package, versions <0.8.2-3.3.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-SLES150-LIBXKBCOMMON0-2759437
- published14 Apr 2022
- disclosed8 Nov 2018
Introduced: 8 Nov 2018
CVE-2018-15864 (opens in a new tab)How to fix?
Upgrade SLES:15.0 libxkbcommon0 to version 0.8.2-3.3.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libxkbcommon0 package and not the libxkbcommon0 package as distributed by SLES.
See How to fix? for SLES:15.0 relevant fixed versions and status.
Unchecked NULL pointer usage in resolve_keysym in xkbcomp/parser.y in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because a map access attempt can occur for a map that was never created.
References
- https://www.suse.com/security/cve/CVE-2018-15864.html
- https://bugzilla.suse.com/1105832
- https://access.redhat.com/errata/RHSA-2019:2079
- https://github.com/xkbcommon/libxkbcommon/commit/a8ea7a1d3daa7bdcb877615ae0a252c189153bd2
- https://lists.freedesktop.org/archives/wayland-devel/2018-August/039243.html
- https://security.gentoo.org/glsa/201810-05
- https://usn.ubuntu.com/3786-1/
- https://usn.ubuntu.com/3786-2/