UBUNTU-CVE-2026-116840
- Source
- https://ubuntu.com/security/CVE-2026-116840
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116840.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-116840
- Upstream
- Published
- 2026-10-27T01:19:00Z
- Modified
- 2026-10-28T20:17:46Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H CVSS Calculator
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H CVSS Calculator
- 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
llama.cpp b5854 before b11275 contains an integer overflow vulnerability in gguf_init_from_reader that bypasses the CVE-2025-53630 size check when padding near-SIZE_MAX tensor sizes. Attackers can supply a crafted GGUF file whose tensor size pads to zero, causing an undersized data blob and out-of-bounds reads by consumers.
- References
-
- https://ubuntu.com/security/CVE-2026-116840
- https://www.cve.org/CVERecord?id=CVE-2026-116840
- https://github.com/cveproject/cvelistv5/tree/main/cves/2026/116xxx/cve-2026-116840.json
- https://github.com/ggml-org/llama.cpp/blob/v0.5.0/ggml/src/gguf.cpp#l794-l795
- https://github.com/ggml-org/llama.cpp/commit/a6ea155d3d38b3f6f43d0c0dc29c2d592413ef44
- https://github.com/ggml-org/llama.cpp/issues/26978
- https://github.com/ggml-org/llama.cpp/pull/26979
- https://github.com/ggml-org/llama.cpp/releases/tag/b11275
- https://nvd.nist.gov/vuln/detail/cve-2026-116840
- https://www.vulncheck.com/advisories/llama-cpp-b5854-before-b11275-integer-overflow-in-gguf-init-from-reader
Affected packages
Ubuntu:26.10 / llama.cpp
Package
- Name
- llama.cpp
- Purl
- pkg:deb/ubuntu/llama.cpp?arch=source&distro=stonking
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Ecosystem specific
{
"binaries": [
{
"binary_name": "libllama0",
"binary_version": "10438+dfsg-1ubuntu1"
},
{
"binary_name": "llama.cpp",
"binary_version": "10438+dfsg-1ubuntu1"
},
{
"binary_name": "llama.cpp-examples",
"binary_version": "10438+dfsg-1ubuntu1"
},
{
"binary_name": "llama.cpp-services",
"binary_version": "10438+dfsg-1ubuntu1"
},
{
"binary_name": "llama.cpp-tests",
"binary_version": "10438+dfsg-1ubuntu1"
},
{
"binary_name": "llama.cpp-tools",
"binary_version": "10438+dfsg-1ubuntu1"
},
{
"binary_name": "llama.cpp-tools-extra",
"binary_version": "10438+dfsg-1ubuntu1"
},
{
"binary_name": "python3-gguf",
"binary_version": "10438+dfsg-1ubuntu1"
}
]
}
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
-
Introduced0 Unknown 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"
}
]
}