CVE-2018-15855
UnknownEPSS 0.43%
Last modified
CVE-2018-15855 is a vulnerability of currently unknown severity. Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because the XkbFile for an xkb_geometry section was mishandled.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.
Description
Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because the XkbFile for an xkb_geometry section was mishandled.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xkbcommon Project | Xkbcommon | < 0.8.1 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
References
- https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ffPatch, Third Party Advisory
- https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.htmlThird Party Advisory
- https://security.gentoo.org/glsa/201810-05Third Party Advisory
- https://usn.ubuntu.com/3786-1/Third Party Advisory
- https://usn.ubuntu.com/3786-2/Third Party Advisory
- https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ffPatch, Third Party Advisory
- https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.htmlThird Party Advisory
- https://security.gentoo.org/glsa/201810-05Third Party Advisory
- https://usn.ubuntu.com/3786-1/Third Party Advisory
- https://usn.ubuntu.com/3786-2/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-15855?
Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because the XkbFile for an xkb_geometry section was mishandled.
How severe is CVE-2018-15855?
Severity scoring for CVE-2018-15855 is pending analysis. The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2018-15855?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2018-15855?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST