CVE-2018-15858
Medium
Description
Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap in xkbcomp/keycodes.c 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.
SeverityMedium
CVSS5.5
Exploit probability—
ProductXkbcommon
PublishedAug 25, 2018
First seenAug 25, 2018
How to fix
Update
- xkbcommon xkbcommon0.8.1 or later
- xkbcommon libxkbcommon0.8.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| xkbcommon xkbcommon | v < 0.8.1 | 0.8.1 |
| xkbcommon libxkbcommon | v < 0.8.1 | 0.8.1 |
| canonical ubuntu_linux | 14.04, 16.04, 18.04 | — |
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