CVE-2018-15858

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.

References

Affected packages

Debian:11 / libxkbcommon

Package

Name: libxkbcommon
Purl: pkg:deb/debian/libxkbcommon?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.8.2-1

Ecosystem specific

{
    "urgency": "low"
}

Debian:12 / libxkbcommon

Package

Name: libxkbcommon
Purl: pkg:deb/debian/libxkbcommon?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.8.2-1

Ecosystem specific

{
    "urgency": "low"
}

Debian:13 / libxkbcommon

Package

Name: libxkbcommon
Purl: pkg:deb/debian/libxkbcommon?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.8.2-1

Ecosystem specific

{
    "urgency": "low"
}

Debian:14 / libxkbcommon

Package

Name: libxkbcommon
Purl: pkg:deb/debian/libxkbcommon?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.8.2-1

Ecosystem specific

{
    "urgency": "low"
}

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

badb428e63387140720f22486b3acbd3d738859f

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": [
        {
            "source": "https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f",
            "deprecated": false,
            "id": "CVE-2018-15858-50d75490",
            "signature_version": "v1",
            "target": {
                "function": "CopyKeyAliasesToKeymap",
                "file": "src/xkbcomp/keycodes.c"
            },
            "digest": {
                "function_hash": "186686948108093335100211637034822400959",
                "length": 1095.0
            },
            "signature_type": "Function"
        },
        {
            "source": "https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f",
            "deprecated": false,
            "id": "CVE-2018-15858-ecd4f68f",
            "signature_version": "v1",
            "target": {
                "file": "src/xkbcomp/keycodes.c"
            },
            "digest": {
                "line_hashes": [
                    "105902513952053338799186888379720812683",
                    "2813125074525204487135130095179841291",
                    "131041052524404914410509899012465260609",
                    "290112449741970181751028486238856450678",
                    "242851341871147170074241260793091770684",
                    "152433531990571504873668951939946627689",
                    "281007177730380793451923478109576055903",
                    "203541298282925731688484467531696055910",
                    "276973798188368871965725525755796654910",
                    "70567054245202246809013427786548308546"
                ],
                "threshold": 0.9
            },
            "signature_type": "Line"
        }
    ]
}