OSV-2026-1110 Check failed in CheckUnwind

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=541969271 Crash type: Check failed Crash state: CheckUnwind mrbbasicallocfunc pmnodehashinsert...

mruby:mruby_fuzzer: Check failed in CheckUnwind

Project: https://github.com/mruby/mruby.git Detailed Report: https://oss-fuzz.com/testcase?key=4712963353935872 Project: mruby Fuzzing Engine: libFuzzer Fuzz Target: mrubyfuzzer Job Type: libfuzzermsanmruby Platform Id: linux Crash Type: Check failed Crash Address: Crash State: CheckUnwind...

EUVD-2026-41977

mrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in opsuper / OPSUPER due to a missing runtime guard for top-level super...

CVE-2026-38976

mrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in opsuper / OPSUPER due to a missing runtime guard for top-level super...

CVE-2026-38973

mrubyc through release3.4.1 was found to contain an out-of-bounds read in builtin missing-method lookup inside mrbcfindmethod...

CVE-2026-38976: NULL Pointer Dereference

mrubyc through 3.4.1 was found to contain a NULL pointer dereference in src/vm.c in opsuper / OPSUPER due to a missing runtime guard for top-level super...

CVE-2026-38973

The mrubyc library, specifically versions through release 3.4.1 , is vulnerable to an out-of-bounds read . This flaw occurs during the builtin missing-method lookup within the mrbc_find_method() function. Exploitation of this vulnerability may lead to unintended data exposure or program instabili...

Security Bulletin: Local Out-of-Bounds Write Vulnerability in mruby ary_fill_exec Function (v3.4.0), affects watsonx.data

Summary A local vulnerability in mruby v3.4.0 allows out-of-bounds writes via the aryfillexec function when manipulating the start or length arguments. Exploits are publicly available, and applying the patch 93619f06dd378db6766666b30c08978311c7ec94 is recommended. This can affect watsonx.data...

CVE-2026-1979

A flaw has been found in mruby up to 3.4.0. This affects the function mrbvmexec 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...

SUSE CVE-2026-1979

A flaw has been found in mruby up to 3.4.0. This affects the function mrbvmexec 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...

CVE-2026-1979

A flaw has been found in mruby up to 3.4.0. This affects the function mrbvmexec 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...

UBUNTU-CVE-2026-1979

A flaw has been found in mruby up to 3.4.0. This affects the function mrbvmexec 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...

CVE-2026-1979

A flaw has been found in mruby up to 3.4.0. This affects the function mrbvmexec 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...

CVE-2026-1979 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 mrbvmexec 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...

CVE-2026-1979

CVE-2026-1979 affects mruby up to version 3.4.0. The issue arises in the function mrb_vm_exec within the file src/vm.c of the component described as the JMPNOT-to-JMPIF Optimization . Exploitation can lead to a use-after-free condition and requires local access to the target environment. The vuln...

CVE-2026-1979 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 mrbvmexec 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...

EUVD-2026-5583

A flaw has been found in mruby up to 3.4.0. This affects the function mrbvmexec 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...

CVE-2026-1979 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 mrbvmexec 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...

CVE-2026-1979

A flaw has been found in mruby up to 3.4.0. This affects the function mrbvmexec 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...

CVE-2026-1979: Use After Free

A flaw has been found in mruby up to 3.4.0. This affects the function mrbvmexec 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...