UBUNTU-CVE-2026-27940
- Source
- https://ubuntu.com/security/CVE-2026-27940
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-27940.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-27940
- Upstream
- Published
- 2026-03-12T17:16:00Z
- Modified
- 2026-05-20T16:24:52.607779949Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
llama.cpp is an inference of several LLM models in C/C++. Prior to b8146, the ggufinitfromfileimpl() 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.
- References
Affected packages
Ubuntu:25.10 / llama.cpp
Package
- Name
- llama.cpp
- Purl
- pkg:deb/ubuntu/llama.cpp?arch=source&distro=questing
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Affected versions
Other
5318+dfsg-1
5318+dfsg-2
5713+dfsg-1
5760+dfsg-1
5760+dfsg-3
5760+dfsg-4
5882+dfsg-2
Ubuntu:26.04:LTS / llama.cpp
Package
- Name
- llama.cpp
- Purl
- pkg:deb/ubuntu/llama.cpp?arch=source&distro=resolute
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Ecosystem specific
{
"binaries": [
{
"binary_name": "libllama0",
"binary_version": "8681+dfsg-1"
},
{
"binary_name": "llama.cpp",
"binary_version": "8681+dfsg-1"
},
{
"binary_name": "llama.cpp-examples",
"binary_version": "8681+dfsg-1"
},
{
"binary_name": "llama.cpp-tests",
"binary_version": "8681+dfsg-1"
},
{
"binary_name": "llama.cpp-tools",
"binary_version": "8681+dfsg-1"
},
{
"binary_name": "llama.cpp-tools-extra",
"binary_version": "8681+dfsg-1"
},
{
"binary_name": "python3-gguf",
"binary_version": "8681+dfsg-1"
}
]
}