UBUNTU-CVE-2026-63209

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Source
https://ubuntu.com/security/CVE-2026-63209
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63209.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-63209
Upstream
Published
2026-09-29T15:17:00Z
Modified
2026-10-01T00:21:35Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

compress provides various compression algorithms. Prior to version 1.18.7, a signed integer overflow vulnerability in s2.NewDict() allows an attacker to bypass repeat index validation by supplying a dictionary with a uvarint-encoded repeat value exceeding MaxInt64. When Dict.Encode() is subsequently called, the overflowed negative repeat value causes an out-of-bounds memory access via unsafe.Pointer arithmetic, crashing the process with SIGSEGV. This issue has been patched in version 1.18.7.

References

Affected packages

Ubuntu:16.04:LTS
golang-github-klauspost-compress

Package

Name
golang-github-klauspost-compress
Purl
pkg:deb/ubuntu/golang-github-klauspost-compress?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.0~git20151221.0.2dd54ae-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-klauspost-compress-dev",
            "binary_version":  "0.0~git20151221.0.2dd54ae-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63209.json"
Ubuntu:18.04:LTS
golang-github-klauspost-compress

Package

Name
golang-github-klauspost-compress
Purl
pkg:deb/ubuntu/golang-github-klauspost-compress?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.1-1
1.2.1-2
1.2.1-4
1.2.1-5

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-klauspost-compress-dev",
            "binary_version":  "1.2.1-5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63209.json"
Ubuntu:20.04:LTS
golang-github-klauspost-compress

Package

Name
golang-github-klauspost-compress
Purl
pkg:deb/ubuntu/golang-github-klauspost-compress?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.1-5
1.7.6-2
1.9.5-1
1.9.5-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-klauspost-compress-dev",
            "binary_version":  "1.9.5-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63209.json"
Ubuntu:22.04:LTS
golang-github-klauspost-compress

Package

Name
golang-github-klauspost-compress
Purl
pkg:deb/ubuntu/golang-github-klauspost-compress?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.11.7-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-klauspost-compress-dev",
            "binary_version":  "1.11.7-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63209.json"
Ubuntu:24.04:LTS
golang-github-klauspost-compress

Package

Name
golang-github-klauspost-compress
Purl
pkg:deb/ubuntu/golang-github-klauspost-compress?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.15.12+ds1-3
1.17.7+ds1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-klauspost-compress-dev",
            "binary_version":  "1.17.7+ds1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63209.json"
Ubuntu:26.04:LTS
golang-github-klauspost-compress

Package

Name
golang-github-klauspost-compress
Purl
pkg:deb/ubuntu/golang-github-klauspost-compress?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.18.0+ds1-1
1.18.1+ds1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-klauspost-compress-dev",
            "binary_version":  "1.18.1+ds1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63209.json"