DEBIAN-CVE-2026-11623
A security vulnerability has been detected in tmux up to 3.6a. Affected is the function image_free of the file image.c. Such manipulation leads to use after free. Local access is required to approach this attack. This attack is characterized by high complexity. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used. Upgrading to version 3.7-rc is able to address this issue. The name of the patch is fc6d94a9f8a593bd8b7031650802084385d4ee03. The affected component should be upgraded.
DEBIAN-CVE-2026-11623
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-11623
tmux
Source reference: /affected/0/package/name
- Affected versions
- 3.5a-3
Source reference:
/affected/0/versions3.6a-1Source reference:
/affected/0/versions3.6a-2Source reference:
/affected/0/versions3.6b-1~bpo13+1Source reference:
/affected/0/versions - Fixed versions
- 3.6b-1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6b-1"
}
]
}
],
"package": {
"name": "tmux",
"purl": "pkg:deb/debian/tmux?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.5a-3",
"3.6a-1",
"3.6a-2",
"3.6b-1~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11623.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55442 · Revision 1
- Added to Heist Feed
- Publisher date