CVE-2018-15857

See a problem?
Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2018-15857
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-15857.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2018-15857
Downstream
Related
Published
2018-08-25T21:29:01Z
Modified
2025-10-15T09:22:08.920012Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

An invalid free in ExprAppendMultiKeysymList in xkbcomp/ast-build.c in xkbcommon before 0.8.1 could be used by local attackers to crash xkbcommon keymap parsers or possibly have unspecified other impact by supplying a crafted keymap file.

References

Affected packages

Git / github.com/xkbcommon/libxkbcommon

Affected ranges

Type
GIT
Repo
https://github.com/xkbcommon/libxkbcommon
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c1e5ac16e77a21f87bdf3bc4dea61b037a17dddb

Affected versions

xkbcommon-0.*

xkbcommon-0.2.0
xkbcommon-0.3.0
xkbcommon-0.3.1
xkbcommon-0.3.2
xkbcommon-0.4.0
xkbcommon-0.4.1
xkbcommon-0.4.2
xkbcommon-0.4.3
xkbcommon-0.5.0
xkbcommon-0.6.0
xkbcommon-0.6.1
xkbcommon-0.7.0
xkbcommon-0.7.1
xkbcommon-0.7.2
xkbcommon-0.8.0

Database specific

vanir_signatures

[
    {
        "signature_type": "Function",
        "id": "CVE-2018-15857-bead969c",
        "source": "https://github.com/xkbcommon/libxkbcommon/commit/c1e5ac16e77a21f87bdf3bc4dea61b037a17dddb",
        "signature_version": "v1",
        "target": {
            "function": "ExprAppendMultiKeysymList",
            "file": "src/xkbcomp/ast-build.c"
        },
        "digest": {
            "function_hash": "246204298610063233728311461425499783433",
            "length": 421.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "id": "CVE-2018-15857-d2756d45",
        "source": "https://github.com/xkbcommon/libxkbcommon/commit/c1e5ac16e77a21f87bdf3bc4dea61b037a17dddb",
        "signature_version": "v1",
        "target": {
            "file": "src/xkbcomp/ast-build.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "157951890283692381345264618911296666620",
                "175364020308458040961507052570546156758",
                "75057826269913629386390900143212499585",
                "256459290595105037938915078059512908386"
            ]
        },
        "deprecated": false
    }
]