CVE-2018-15861 describes a NULL pointer dereference vulnerability in xkbcommon versions prior to 0.8.2, specifically within the ExprResolveLhs function in xkbcomp/expr.c. This flaw allows a local attacker to crash the xkbcommon parser by providing a specially crafted keymap file that triggers an xkb_intern_atom failure. Rated as Medium severity (CVSS 5.5), the vulnerability has a low attack complexity and requires local access, resulting in a high impact on availability but no impact on confidentiality or integrity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.8.1CPE matchmatch criteria | cpe:2.3:a:xkbcommon:libxkbcommon:*:*:*:*:*:*:*:* | ||
<= 0.8.1CPE matchmatch criteria | cpe:2.3:a:xkbcommon:xkbcommon:*:*:*:*:*:*:*:* | ||
14.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | ||
16.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | ||
18.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.