CVE-2018-15858 - CVE House

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Status published Medium CVE-2018-15858

Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap...

5.5 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from xkbcommon

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Unchecked NULL pointer usage in resolve_keysym in xkbcomp/parser.y in xkbcommon...

Unchecked NULL pointer usage in ResolveStateAndPredicate in xkbcomp/compat.c in xkbcommon...

Unchecked NULL pointer usage in LookupModMask in xkbcomp/expr.c in xkbcommon...

Unchecked NULL pointer usage in ExprResolveLhs in xkbcomp/expr.c in xkbcommon...

Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs...

Affected Vendor

xkbcommon

View all reports →

Affected Software

libxkbcommon, xkbcommon, ubuntu linux

Vulnerable Versions:

0, 14.04, 16.04, 18.04

Timeline

Official Publish: August 25th, 2018

Last Modified: August 5th, 2024

Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.