UBUNTU-CVE-2026-116742

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Source
https://ubuntu.com/security/CVE-2026-116742
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116742.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-116742
Upstream
Published
2026-10-26T22:16:00Z
Modified
2026-10-28T20:17:46Z
Severity
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L CVSS Calculator
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L CVSS Calculator
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

HTSlib through 1.24 contains a heap out-of-bounds write and read vulnerability in bgzf_index_load_hfile() in bgzf.c that allows attackers to corrupt heap memory by supplying a crafted .gzi index entry count. A count of 0xFFFFFFFF truncates noffs to zero, causing writes past a malloc(0) buffer and an offs[-1] read in bgzf_useek(), resulting in heap corruption or crashes in tools like samtools and bcftools.

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
0 Unknown 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-2026-116742.json"
Ubuntu:22.04:LTS
htslib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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-2026-116742.json"
Ubuntu:24.04:LTS
htslib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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-2026-116742.json"
Ubuntu:26.04:LTS
htslib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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-2026-116742.json"
Ubuntu:26.10
htslib

Package

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

Affected ranges

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

Affected versions

1.*
1.22.1+ds2-1
1.22.1+ds2-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "htslib-test",
            "binary_version":  "1.22.1+ds2-1build1"
        },
        {
            "binary_name":  "libhts3t64",
            "binary_version":  "1.22.1+ds2-1build1"
        },
        {
            "binary_name":  "tabix",
            "binary_version":  "1.22.1+ds2-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116742.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
0 Unknown 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-2026-116742.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
0 Unknown 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-2026-116742.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
0 Unknown 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-2026-116742.json"