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CVE-2026-107183

llama.cpp before b11393 Use-After-Free via common_chat_peg_mapper chat_parser

Published
Last modified
Status
published
Known exploitation
Not listed in CISA KEV
Fix
Fixed in b11393
Public exploit
None on Exploit-DB
CISA SSVC
  • Exploitation: none
  • Automatable: no
  • Technical impact: total
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Decision points from CISA's Vulnrichment, assessed (SSVC 2.0.3).

SSVC documentation

Summary

llama.cpp before b11393 contains a use-after-free and double free vulnerability in common_chat_peg_mapper::map that allows unauthenticated remote attackers to corrupt heap memory via a dangling current_tool pointer. Attackers can submit a chat_parser in a POST /completion request emitting a tool-id after a tool-close tag to crash llama-server and shape a heap write primitive.

Affected versions

  • ggml-org llama.cpp

    From b8227 · fixed in b11393

References 6

GitHub · ggml-org/llama.cpp

vulncheck.com