CVE catalog
CVE-2026-43629
llama.cpp builds b4882 through b9058 contain a heap buffer overflow vulnerability in the KV cache state restore path where the state_read_data() function computes write size without overflow checking,
- Severity
- Critical · CVSS 9.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.70% · Oct 25, 2026
llama.cpp builds b4882 through b9058 contain a heap buffer overflow vulnerability in the KV cache state restore path where the state_read_data() function computes write size without overflow checking, allowing attackers with write access to the slot_save_path directory to corrupt heap memory. Attackers can craft malicious state files where cell_count multiplication overflows or exceeds tensor buffer allocation to write attacker-controlled bytes past buffer boundaries, potentially resulting in heap metadata corruption, model weight corruption, or arbitrary code execution via function pointer overwrite.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | llama.cpp | Not reported | Not reported | unknown |
| Debian | llama.cpp | 14 | 10108+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 10108+dfsg1-1 | vulnerable |
| Debian | llama.cpp | 14 | 10108+dfsg1-2 | vulnerable |
| Debian | llama.cpp | 14 | 10192+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 10192+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 10192+dfsg-2~exp1 | vulnerable |
| Debian | llama.cpp | 14 | 10271+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 10344+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 10438+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.1.2+dfsg-1~exp1 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.2.0+dfsg1-1 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.2.0+dfsg1-1~exp1 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.4.0+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.4.1+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.5.0+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.5.0+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.6.0+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.6.0+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.7.0+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 1:0.7.0+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 5151+dfsg-1~exp2 | vulnerable |
| Debian | llama.cpp | 14 | 5151+dfsg-1~exp3 | vulnerable |
| Debian | llama.cpp | 14 | 5318+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 5318+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 5713+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 5760+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 5760+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 5760+dfsg-3 | vulnerable |
| Debian | llama.cpp | 14 | 5760+dfsg-4 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-3 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-3~exp1 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-3~exp2 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-3~exp3 | vulnerable |
| Debian | llama.cpp | 14 | 5882+dfsg-4 | vulnerable |
| Debian | llama.cpp | 14 | 6641+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 6641+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 6641+dfsg-3 | vulnerable |
| Debian | llama.cpp | 14 | 7593+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 7593+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 7593+dfsg-3 | vulnerable |
| Debian | llama.cpp | 14 | 7965+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 8064+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 8064+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 8461+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 8611+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 8681+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 8870+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 8941+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9009+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9071+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9190+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9413+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9555+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9601+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9721+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9895+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9895+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 9895+dfsg-3 | vulnerable |
| Debian | llama.cpp | 14 | 9951+dfsg-1 | vulnerable |
| Debian | llama.cpp | 14 | 9951+dfsg-2 | vulnerable |
| Debian | llama.cpp | 14 | 9951+dfsg-3 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-43629]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-43629]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43629.json]
- [https://www.vulncheck.com/advisories/llama-cpp-b4882-b9058-buffer-overflow-in-kv-cache-state-restore]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]