DEBIAN-CVE-2026-5673
A flaw was found in libtheora. This heap-based out-of-bounds read vulnerability exists within the AVI (Audio Video Interleave) parser, specifically in the avi_parse_input_file() function. A local attacker could exploit this by tricking a user into opening a specially crafted AVI file containing a truncated header sub-chunk. This could lead to a denial-of-service (application crash) or potentially leak sensitive information from the heap.
DEBIAN-CVE-2026-5673
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-2026-5673
libtheora
Source reference: /affected/0/package/name
- Affected versions
- 1.1.1+dfsg.1-16.1
Source reference:
/affected/0/versions1.1.1+dfsg.1-16.1+deb12u1Source reference:
/affected/0/versions1.1.1+dfsg.1-17Source reference:
/affected/0/versions1.2.0+dfsg-1Source reference:
/affected/0/versions1.2.0+dfsg-2Source reference:
/affected/0/versions1.2.0+dfsg-3Source reference:
/affected/0/versions1.2.0+dfsg-4Source reference:
/affected/0/versions1.2.0+dfsg-5Source reference:
/affected/0/versions1.2.0+dfsg-6Source reference:
/affected/0/versions1.2.0~alpha1+dfsg-1Source reference:
/affected/0/versions1.2.0~alpha1+dfsg-2Source reference:
/affected/0/versions1.2.0~alpha1+dfsg-3Source reference:
/affected/0/versions1.2.0~alpha1+dfsg-4Source reference:
/affected/0/versions1.2.0~alpha1+dfsg-5Source reference:
/affected/0/versions1.2.0~alpha1+dfsg-6Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
libtheora
Source reference: /affected/1/package/name
- Affected versions
- 1.2.0+dfsg-1
Source reference:
/affected/1/versions1.2.0+dfsg-2Source reference:
/affected/1/versions1.2.0+dfsg-3Source reference:
/affected/1/versions1.2.0+dfsg-4Source reference:
/affected/1/versions1.2.0+dfsg-5Source reference:
/affected/1/versions1.2.0+dfsg-6Source reference:
/affected/1/versions1.2.0~alpha1+dfsg-6Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
libtheora
Source reference: /affected/2/package/name
- Affected versions
- 1.2.0+dfsg-1
Source reference:
/affected/2/versions1.2.0+dfsg-2Source reference:
/affected/2/versions1.2.0+dfsg-3Source reference:
/affected/2/versions1.2.0+dfsg-4Source reference:
/affected/2/versions1.2.0+dfsg-5Source reference:
/affected/2/versions1.2.0+dfsg-6Source reference:
/affected/2/versions1.2.0~alpha1+dfsg-6Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- 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"
}
]
}
],
"package": {
"name": "libtheora",
"purl": "pkg:deb/debian/libtheora?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.1.1+dfsg.1-16.1",
"1.1.1+dfsg.1-16.1+deb12u1",
"1.1.1+dfsg.1-17",
"1.2.0+dfsg-1",
"1.2.0+dfsg-2",
"1.2.0+dfsg-3",
"1.2.0+dfsg-4",
"1.2.0+dfsg-5",
"1.2.0+dfsg-6",
"1.2.0~alpha1+dfsg-1",
"1.2.0~alpha1+dfsg-2",
"1.2.0~alpha1+dfsg-3",
"1.2.0~alpha1+dfsg-4",
"1.2.0~alpha1+dfsg-5",
"1.2.0~alpha1+dfsg-6"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5673.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libtheora",
"purl": "pkg:deb/debian/libtheora?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.2.0+dfsg-1",
"1.2.0+dfsg-2",
"1.2.0+dfsg-3",
"1.2.0+dfsg-4",
"1.2.0+dfsg-5",
"1.2.0+dfsg-6",
"1.2.0~alpha1+dfsg-6"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5673.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libtheora",
"purl": "pkg:deb/debian/libtheora?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.2.0+dfsg-1",
"1.2.0+dfsg-2",
"1.2.0+dfsg-3",
"1.2.0+dfsg-4",
"1.2.0+dfsg-5",
"1.2.0+dfsg-6",
"1.2.0~alpha1+dfsg-6"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5673.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57963 · Revision 1
- Added to Heist Feed
- Publisher date