DEBIAN-CVE-2026-34159
llama.cpp is an inference of several LLM models in C/C++. Prior to version b8492, the RPC backend's deserialize_tensor() skips all bounds validation when a tensor's buffer field is 0. An unauthenticated attacker can read and write arbitrary process memory via crafted GRAPH_COMPUTE messages. Combined with pointer leaks from ALLOC_BUFFER/BUFFER_GET_BASE, this gives full ASLR bypass and remote code execution. No authentication required, just TCP access to the RPC server port. This issue has been patched in version b8492.
DEBIAN-CVE-2026-34159
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-2026-34159
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/versions8461+dfsg-1Source reference:
/affected/0/versions - Fixed versions
- 8611+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": "8611+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",
"8461+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34159.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55952 · Revision 1
- Added to Heist Feed
- Publisher date