DEBIAN-CVE-2026-116742

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Source
https://security-tracker.debian.org/tracker/CVE-2026-116742
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-116742.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-116742
Upstream
Published
2026-10-26T22:16:58Z
Modified
2026-10-29T09:00:06Z
Severity
  • 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
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

Debian:12 / htslib

Package

Name
htslib
Purl
pkg:deb/debian/htslib?arch=source&distro=bookworm

Affected ranges

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

Affected versions

1.*
1.16+ds-3
1.17+ds-0+exp1
1.17+ds-1
1.18+ds-0+exp1
1.18+ds-1
1.19+ds-0+exp0
1.19+ds-1
1.19+ds-1+exp1
1.19+ds-1.1
1.20+ds-1
1.20+ds-2
1.21+ds-0+exp1
1.21+ds-0+exp2
1.21+ds-1
1.22.1+ds-1
1.22.1+ds-2
1.22.1+ds2-1
1.24-1
1.24-2
1.24-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-116742.json"

Debian:13 / htslib

Package

Name
htslib
Purl
pkg:deb/debian/htslib?arch=source&distro=trixie

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+ds-1
1.22.1+ds-2
1.22.1+ds2-1
1.24-1
1.24-2
1.24-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-116742.json"

Debian:14 / htslib

Package

Name
htslib
Purl
pkg:deb/debian/htslib?arch=source&distro=forky

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+ds-1
1.22.1+ds-2
1.22.1+ds2-1
1.24-1
1.24-2
1.24-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-116742.json"