UBUNTU-CVE-2026-43630

Source
https://ubuntu.com/security/CVE-2026-43630
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43630.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-43630
Upstream
Published
2026-08-07T00:00:00Z
Modified
2026-08-07T17:45:14.467802911Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

llama.cpp builds b5702 through b7653 contain an out-of-bounds read vulnerability in the recurrent memory state restore path that allows attackers with write access to the slot save directory to read memory past the end of the allocated cells array. Attackers can craft a malicious slot file with an oversized seq_id value to trigger an out-of-bounds read that leaks heap data including pointer values into server logs, defeating ASLR protections and facilitating further exploitation.

References

Affected packages

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
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

Other
5882+dfsg-2
8064+dfsg-1ubuntu1
8681+dfsg-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "8681+dfsg-1",
            "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"
        }
    ]
}

Database specific

source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-43630.json"