ggml-org llama.cpp GBNF Grammar llama-grammar.cpp llama_grammar_advance_stack stack-based overflow
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.8epss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
A flaw has been found in ggml-org llama.cpp up to 55abc39. Impacted is the function llama_grammar_advance_stack of the file llama.cpp/src/llama-grammar.cpp of the component GBNF Grammar Handler. This manipulation causes stack-based buffer overflow. The attack needs to be launched locally. The exploit has been published and may be used. Patch name: 18993. To fix this issue, it is recommended to deploy a patch.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
ggml-org · llama.cppReferences
https://github.com/ggml-org/llama.cpp/https://github.com/ggml-org/llama.cpp/issues/18988https://github.com/ggml-org/llama.cpp/issues/18988#event-4426704865https://github.com/ggml-org/llama.cpp/pull/18993https://github.com/user-attachments/files/24761101/poc.ziphttps://vuldb.com/?ctiid.344636https://vuldb.com/?id.344636https://vuldb.com/?submit.745263