UBUNTU-CVE-2026-31965

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Source
https://ubuntu.com/security/CVE-2026-31965
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31965.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-31965
Upstream
Published
2026-03-18T19:16:00Z
Modified
2026-05-20T16:25:18.888025745Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

HTSlib is a library for reading and writing bioinformatics file formats. CRAM is a compressed format which stores DNA sequence alignment data. In the cram_decode_slice() function called while reading CRAM records, validation of the reference id field occurred too late, allowing two out of bounds reads to occur before the invalid data was detected. The bug does allow two values to be leaked to the caller, however as the function reports an error it may be difficult to exploit them. It is also possible that the program will crash due to trying to access invalid memory. Versions 1.23.1, 1.22.2 and 1.21.1 include fixes for this issue. There is no workaround for this issue.

References

Affected packages

Ubuntu:20.04:LTS
htslib

Package

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

Affected ranges

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

Affected versions

1.*
1.9-10
1.9-11
1.9-12
1.10.2-2ubuntu1
1.10.2-2ubuntu2
1.10.2-3
1.10.2-3ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htslib-test",
            "binary_version": "1.10.2-3ubuntu0.1"
        },
        {
            "binary_name": "libhts3",
            "binary_version": "1.10.2-3ubuntu0.1"
        },
        {
            "binary_name": "tabix",
            "binary_version": "1.10.2-3ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31965.json"
Ubuntu:22.04:LTS
htslib

Package

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

Affected ranges

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

Affected versions

1.*
1.13+ds-2
1.13+ds-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htslib-test",
            "binary_version": "1.13+ds-2build1"
        },
        {
            "binary_name": "libhts3",
            "binary_version": "1.13+ds-2build1"
        },
        {
            "binary_name": "tabix",
            "binary_version": "1.13+ds-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31965.json"
Ubuntu:24.04:LTS
htslib

Package

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

Affected ranges

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

Affected versions

1.*
1.17+ds-1
1.18+ds-1
1.19+ds-1.1build2
1.19+ds-1.1build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htslib-test",
            "binary_version": "1.19+ds-1.1build3"
        },
        {
            "binary_name": "libhts3t64",
            "binary_version": "1.19+ds-1.1build3"
        },
        {
            "binary_name": "tabix",
            "binary_version": "1.19+ds-1.1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31965.json"
Ubuntu:25.10
htslib

Package

Name
htslib
Purl
pkg:deb/ubuntu/htslib?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.21+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htslib-test",
            "binary_version": "1.21+ds-1"
        },
        {
            "binary_name": "libhts3t64",
            "binary_version": "1.21+ds-1"
        },
        {
            "binary_name": "tabix",
            "binary_version": "1.21+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31965.json"
Ubuntu:26.04:LTS
htslib

Package

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

Affected ranges

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

Affected versions

1.*
1.21+ds-1
1.22.1+ds2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htslib-test",
            "binary_version": "1.22.1+ds2-1"
        },
        {
            "binary_name": "libhts3t64",
            "binary_version": "1.22.1+ds2-1"
        },
        {
            "binary_name": "tabix",
            "binary_version": "1.22.1+ds2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31965.json"
Ubuntu:Pro:14.04:LTS
htslib

Package

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

Affected ranges

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

Affected versions

0.*
0.2.0~rc3-1
0.2.0~rc3-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htslib-test",
            "binary_version": "0.2.0~rc3-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libhts0",
            "binary_version": "0.2.0~rc3-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31965.json"
Ubuntu:Pro:16.04:LTS
htslib

Package

Name
htslib
Purl
pkg:deb/ubuntu/htslib?arch=source&distro=esm-apps%2Fxenial

Affected ranges

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

Affected versions

1.*
1.2.1-1
1.2.1-2
1.2.1-2ubuntu1
1.2.1-2ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htslib-test",
            "binary_version": "1.2.1-2ubuntu1+esm1"
        },
        {
            "binary_name": "libhts1",
            "binary_version": "1.2.1-2ubuntu1+esm1"
        },
        {
            "binary_name": "tabix",
            "binary_version": "1.2.1-2ubuntu1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31965.json"
Ubuntu:Pro:18.04:LTS
htslib

Package

Name
htslib
Purl
pkg:deb/ubuntu/htslib?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

1.*
1.5-1
1.5-4ubuntu1
1.6-3ubuntu1
1.6-4
1.6-4build1
1.7-2
1.7-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "htslib-test",
            "binary_version": "1.7-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "libhts2",
            "binary_version": "1.7-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "tabix",
            "binary_version": "1.7-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31965.json"