DEBIAN-CVE-2026-3950
A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.
DEBIAN-CVE-2026-3950
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-2026-3950
libheif
Source reference: /affected/0/package/name
- Affected versions
- 1.19.8-1
Source reference:
/affected/0/versions1.20.1-1Source reference:
/affected/0/versions1.20.2-1Source reference:
/affected/0/versions1.20.2-2Source reference:
/affected/0/versions1.21.2-1Source reference:
/affected/0/versions1.21.2-2Source reference:
/affected/0/versions1.21.2-3Source reference:
/affected/0/versions1.21.2-4Source reference:
/affected/0/versions - Fixed versions
- 1.23.1-1
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": "1.23.1-1"
}
]
}
],
"package": {
"name": "libheif",
"purl": "pkg:deb/debian/libheif?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.19.8-1",
"1.20.1-1",
"1.20.2-1",
"1.20.2-2",
"1.21.2-1",
"1.21.2-2",
"1.21.2-3",
"1.21.2-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-3950.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56857 · Revision 1
- Added to Heist Feed
- Publisher date