DEBIAN-CVE-2026-27940
llama.cpp is an inference of several LLM models in C/C++. Prior to b8146, the gguf_init_from_file_impl() in gguf.cpp is vulnerable to an Integer overflow, leading to an undersized heap allocation. Using the subsequent fread() writes 528+ bytes of attacker-controlled data past the buffer boundary. This is a bypass of a similar bug in the same file - CVE-2025-53630, but the fix overlooked some areas. This vulnerability is fixed in b8146.
DEBIAN-CVE-2026-27940
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-2026-27940
llama.cpp
Source reference: /affected/0/package/name
- Affected versions
- 5151+dfsg-1~exp2
Source reference:
/affected/0/versions5151+dfsg-1~exp3Source reference:
/affected/0/versions5318+dfsg-1Source reference:
/affected/0/versions5318+dfsg-2Source reference:
/affected/0/versions5713+dfsg-1Source reference:
/affected/0/versions5760+dfsg-1Source reference:
/affected/0/versions5760+dfsg-2Source reference:
/affected/0/versions5760+dfsg-3Source reference:
/affected/0/versions5760+dfsg-4Source reference:
/affected/0/versions5882+dfsg-1Source reference:
/affected/0/versions5882+dfsg-2Source reference:
/affected/0/versions5882+dfsg-3Source reference:
/affected/0/versions5882+dfsg-3~exp1Source reference:
/affected/0/versions5882+dfsg-3~exp2Source reference:
/affected/0/versions5882+dfsg-3~exp3Source reference:
/affected/0/versions5882+dfsg-4Source reference:
/affected/0/versions6641+dfsg-1Source reference:
/affected/0/versions6641+dfsg-2Source reference:
/affected/0/versions6641+dfsg-3Source reference:
/affected/0/versions7593+dfsg-1Source reference:
/affected/0/versions7593+dfsg-2Source reference:
/affected/0/versions7593+dfsg-3Source reference:
/affected/0/versions7965+dfsg-1Source reference:
/affected/0/versions8064+dfsg-1Source reference:
/affected/0/versions8064+dfsg-2Source reference:
/affected/0/versions - Fixed versions
- 8461+dfsg-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": "8461+dfsg-1"
}
]
}
],
"package": {
"name": "llama.cpp",
"purl": "pkg:deb/debian/llama.cpp?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"5151+dfsg-1~exp2",
"5151+dfsg-1~exp3",
"5318+dfsg-1",
"5318+dfsg-2",
"5713+dfsg-1",
"5760+dfsg-1",
"5760+dfsg-2",
"5760+dfsg-3",
"5760+dfsg-4",
"5882+dfsg-1",
"5882+dfsg-2",
"5882+dfsg-3",
"5882+dfsg-3~exp1",
"5882+dfsg-3~exp2",
"5882+dfsg-3~exp3",
"5882+dfsg-4",
"6641+dfsg-1",
"6641+dfsg-2",
"6641+dfsg-3",
"7593+dfsg-1",
"7593+dfsg-2",
"7593+dfsg-3",
"7965+dfsg-1",
"8064+dfsg-1",
"8064+dfsg-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27940.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56324 · Revision 1
- Added to Heist Feed
- Publisher date