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Details of issue NIXPKGS-2026-0163

NIXPKGS-2026-0163
published on 7 Feb 2026
Permalink CVE-2026-1979
updated 2 weeks ago by @LeSuisse Activity log
  • Created automatic suggestion 2 weeks, 1 day ago
  • @LeSuisse accepted 2 weeks ago
  • @LeSuisse published on GitHub 2 weeks ago
mruby JMPNOT-to-JMPIF Optimization vm.c mrb_vm_exec use after free

A flaw has been found in mruby up to 3.4.0. This affects the function mrb_vm_exec of the file src/vm.c of the component JMPNOT-to-JMPIF Optimization. Executing a manipulation can lead to use after free. The attack needs to be launched locally. The exploit has been published and may be used. This patch is called e50f15c1c6e131fa7934355eb02b8173b13df415. It is advisable to implement a patch to correct this issue.

Affected products

mruby
  • ==3.4.0
  • ==3.0
  • ==3.1
  • ==3.3
  • ==3.2

Matching in nixpkgs

Package maintainers

Upstream issue: https://github.com/mruby/mruby/issues/6701
Upstream fix: https://github.com/mruby/mruby/commit/e50f15c1c6e131fa7934355eb02b8173b13df415