A vulnerability was found in llvm llvm-project up to 22.1.6. This affects the function llvm::StringMap::insert in the library /lib/IR/ValueSymbolTable.cpp of the component ValueSymbolTable Module. The manipulation results in stack-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The presence of this vulnerability remains uncertain at this time. The LLVM project explains, that the reported behavior is outside its documented security scope and therefore not considered a security vulnerability.

A vulnerability was found in llvm llvm-project up to 22.1.6. This affects the function llvm::StringMap::insert in the library /lib/IR/ValueSymbolTable.cpp of the component ValueSymbolTable Module. The manipulation results in stack-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

llvm: llvm: Denial of Service via stack-based buffer overflow in StringMap::insert llvm: llvm-project: LLVM: Denial of service via heap-based buffer overflow in Bitcode File Handler urllib3: urllib3: Denial of Service due to excessive HTTP response decompression brace-expansion: brace-expansion: Denial of Service due to excessive memory allocation when expanding large numeric ranges

Affected: Ubuntu:20.04:LTS: llvm-toolchain-18, Ubuntu:24.04:LTS: llvm-toolchain-18, Ubuntu:24.04:LTS: llvm-toolchain-19, Ubuntu:25.10: llvm-toolchain-18, Ubuntu:25.10: llvm-toolchain-19, Ubuntu:25.10: llvm-toolchain-21, Ubuntu:26.04:LTS: llvm-toolchain-18, Ubuntu:26.04:LTS: llvm-toolchain-19, Ubuntu:26.04:LTS: llvm-toolchain-21, Ubuntu:26.04:LTS: llvm-toolchain-22

A vulnerability was found in llvm llvm-project up to 22.1.6. This affects the function llvm::StringMap::insert in the library /lib/IR/ValueSymbolTable.cpp of the component ValueSymbolTable Module. The manipulation results in stack-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The presence of this vulnerability remains uncertain at this time. The LLVM project explains, that the reported behavior is outside its documented security scope and therefore not considered a security vulnerability.