DEBIAN-CVE-2026-118769

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Source
https://security-tracker.debian.org/tracker/CVE-2026-118769
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-118769.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-118769
Upstream
Published
2026-10-29T18:17:29Z
Modified
2026-10-31T21:00:07Z
Severity
  • 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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

Botan is a C++ cryptography library. From 2.1.0 until 3.13.0, the Botan C API function botan_block_cipher_block_size converted a size_t block size to int without a bounds check. In an application that accepts external algorithm parameter strings and uses the FFI raw ECB mode, an attacker can select the variable-block-size Lion cipher so that the reported size is truncated, the caller allocates insufficient memory, and later block processing causes memory corruption. The C++ API and normally used C API modes such as CBC and CTR are unaffected. This issue is fixed in version 3.13.0.

References

Affected packages

Debian:12 / botan

Package

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

Affected ranges

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

Affected versions

2.*
2.19.3+dfsg-1
2.19.3+dfsg-1+deb12u1
2.19.4+dfsg-1
2.19.5+dfsg-1
2.19.5+dfsg-2
2.19.5+dfsg-3
2.19.5+dfsg-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-118769.json"

Debian:13 / botan

Package

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

Affected ranges

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

Affected versions

2.*
2.19.5+dfsg-4

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-118769.json"

Debian:13 / botan3

Package

Name
botan3
Purl
pkg:deb/debian/botan3?arch=source&distro=trixie

Affected ranges

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

Affected versions

3.*
3.7.1+dfsg-2
3.8.1+dfsg-1
3.9.0+dfsg-1
3.9.0+dfsg-2
3.9.0+dfsg-2.1
3.10.0+dfsg-1
3.10.0+dfsg-2
3.11.0+dfsg-1
3.11.1+dfsg-1
3.11.1+dfsg-2
3.12.0+dfsg-1
3.12.0+dfsg-2~deb13u1
3.12.0+dfsg-2
3.13.0+dfsg-1
3.13.0+dfsg-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-118769.json"

Debian:14 / botan3

Package

Name
botan3
Purl
pkg:deb/debian/botan3?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.13.0+dfsg-2

Affected versions

3.*
3.7.1+dfsg-2
3.8.1+dfsg-1
3.9.0+dfsg-1
3.9.0+dfsg-2
3.9.0+dfsg-2.1
3.10.0+dfsg-1
3.10.0+dfsg-2
3.11.0+dfsg-1
3.11.1+dfsg-1
3.11.1+dfsg-2
3.12.0+dfsg-1
3.12.0+dfsg-2~deb13u1
3.12.0+dfsg-2
3.13.0+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-118769.json"