UBUNTU-CVE-2026-110602

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Source

https://ubuntu.com/security/CVE-2026-110602

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-110602

Upstream

CVE-2026-110602

Published

2026-10-15T00:00:00Z

Modified

2026-10-17T12:58:03Z

Severity

6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H CVSS Calculator
5.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

libmspack through 0.11alpha contains an uninitialized pointer free vulnerability in kwajd_open() in mspack/kwajd.c that frees unzeroed filename and extra pointers on header read errors. Attackers can supply a truncated, empty, or wrong-signature KWAJ file to crash the process or obtain an arbitrary-free memory corruption primitive.

References

Affected packages

Ubuntu:16.04:LTS

libmspack

Package

Name: libmspack
Purl: pkg:deb/ubuntu/libmspack?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.5-1

0.5-1ubuntu0.16.04.1

0.5-1ubuntu0.16.04.2

0.5-1ubuntu0.16.04.3

0.5-1ubuntu0.16.04.4

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "libmspack0",
            "binary_version":  "0.5-1ubuntu0.16.04.4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json"

Ubuntu:18.04:LTS

libmspack

Package

Name: libmspack
Purl: pkg:deb/ubuntu/libmspack?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.6-3

0.6-3ubuntu0.1

0.6-3ubuntu0.2

0.6-3ubuntu0.3

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "libmspack0",
            "binary_version":  "0.6-3ubuntu0.3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json"

Ubuntu:20.04:LTS

libmspack

Package

Name: libmspack
Purl: pkg:deb/ubuntu/libmspack?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.10.1-1

0.10.1-2

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "libmspack0",
            "binary_version":  "0.10.1-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json"

Ubuntu:22.04:LTS

libmspack

Package

Name: libmspack
Purl: pkg:deb/ubuntu/libmspack?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.10.1-2build1

0.10.1-2build2

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "libmspack0",
            "binary_version":  "0.10.1-2build2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json"

Ubuntu:24.04:LTS

libmspack

Package

Name: libmspack
Purl: pkg:deb/ubuntu/libmspack?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.11-1

0.11-1.1

0.11-1.1build1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "libmspack0t64",
            "binary_version":  "0.11-1.1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json"

Ubuntu:26.04:LTS

libmspack

Package

Name: libmspack
Purl: pkg:deb/ubuntu/libmspack?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.11-1.1build1

0.11-1.1build2

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "libmspack0t64",
            "binary_version":  "0.11-1.1build2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json"

Ubuntu:26.10

libmspack

Package

Name: libmspack
Purl: pkg:deb/ubuntu/libmspack?arch=source&distro=stonking

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.11-1.1build2

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "libmspack0t64",
            "binary_version":  "0.11-1.1build2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json"

Ubuntu:Pro:14.04:LTS

clamav

Package

Name: clamav
Purl: pkg:deb/ubuntu/clamav?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.97.8+dfsg-1ubuntu4

0.97.8+dfsg-1ubuntu5

0.98.1+dfsg-1ubuntu4

0.98.1+dfsg-1ubuntu5

0.98.1+dfsg-2ubuntu2

0.98.1+dfsg-4ubuntu1

0.98.1+dfsg-4ubuntu1.1

0.98.5+addedllvm-0ubuntu0.14.04.1

0.98.6+dfsg-0ubuntu0.14.04.1

0.98.7+dfsg-0ubuntu0.14.04.1

0.99.2+addedllvm-0ubuntu0.14.04.1

0.99.2+addedllvm-0ubuntu0.14.04.2

0.99.3+addedllvm-0ubuntu0.14.04.1

0.99.4+addedllvm-0ubuntu0.14.04.1

0.100.1+dfsg-1ubuntu0.14.04.1

0.100.1+dfsg-1ubuntu0.14.04.2

0.100.1+dfsg-1ubuntu0.14.04.3

0.100.1+dfsg-1ubuntu0.14.04.4

0.100.2+dfsg-1ubuntu0.14.04.1

0.100.2+dfsg-1ubuntu0.14.04.2

0.100.3+dfsg-0ubuntu0.14.04.1

0.100.3+dfsg-0ubuntu0.14.04.1+esm1

0.101.4+dfsg-0ubuntu0.14.04.1+esm1

0.102.1+dfsg-0ubuntu0.14.04.1+esm1

0.102.2+dfsg-0ubuntu0.14.04.1+esm1

0.102.3+dfsg-0ubuntu0.14.04.1+esm1

0.102.4+dfsg-0ubuntu0.14.04.1+esm1

0.103.2+dfsg-0ubuntu0.14.04.1+esm1

0.103.2+dfsg-0ubuntu0.14.04.1+esm2

0.103.5+dfsg-0ubuntu0.14.04.1+esm1

0.103.6+dfsg-0ubuntu0.14.04.1+esm1

0.103.8+dfsg-0ubuntu0.14.04.1+esm1

0.103.9+dfsg-0ubuntu0.14.04.1+esm1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "clamav",
            "binary_version":  "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
        },
        {
            "binary_name":  "clamav-base",
            "binary_version":  "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
        },
        {
            "binary_name":  "clamav-daemon",
            "binary_version":  "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
        },
        {
            "binary_name":  "clamav-docs",
            "binary_version":  "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
        },
        {
            "binary_name":  "clamav-freshclam",
            "binary_version":  "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
        },
        {
            "binary_name":  "clamav-milter",
            "binary_version":  "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
        },
        {
            "binary_name":  "clamav-testfiles",
            "binary_version":  "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
        },
        {
            "binary_name":  "libclamav9",
            "binary_version":  "0.103.9+dfsg-0ubuntu0.14.04.1+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json"

libmspack

Package

Name: libmspack
Purl: pkg:deb/ubuntu/libmspack?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.4-1

0.4-1ubuntu0.1~esm1

0.4-1ubuntu0.1~esm2

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "libmspack0",
            "binary_version":  "0.4-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110602.json"