CVE-2022-4996

A flaw has been found in mruby 3.1.0. Affected is the function udiv of the file bigint.c. Executing a manipulation can lead to floating point comparison with incorrect operator. It is possible to launch the attack remotely. The exploit has been published and may be used. It is best practice to...

CVE-2022-4996 mruby bigint.c udiv floating point comparison with incorrect operator

A flaw has been found in mruby 3.1.0. Affected is the function udiv of the file bigint.c. Executing a manipulation can lead to floating point comparison with incorrect operator. It is possible to launch the attack remotely. The exploit has been published and may be used. It is best practice to...

CVE-2022-4996

In mruby 3.1.0, the udiv function in bigint.c uses an incorrect operator for floating-point comparison, enabling a remote denial-of-service attack; a proof-of-concept exploit exists and an official fix is available, so upgrading to the patched version is recommended.

CVE-2022-4996 mruby bigint.c udiv floating point comparison with incorrect operator

A flaw has been found in mruby 3.1.0. Affected is the function udiv of the file bigint.c. Executing a manipulation can lead to floating point comparison with incorrect operator. It is possible to launch the attack remotely. The exploit has been published and may be used. It is best practice to...

kobako Sandbox Escape: guest eval reaches host RCE via method_missing → public_send (any bound Service)

Summary A guest mruby script running inside the Kobako sandbox can execute arbitrary Ruby in the host process, fully escaping the sandbox. Details A host embeds bound "Service" objects that guest scripts call across the wasm boundary through the transport dispatcher. The dispatcher passed the...

CVE-2026-20760

Improper handling of overlap between protected memory ranges in some microcode for some IntelR Processors within Ring 0: Hypervisor may allow an escalation of privilege. Authorized adversary with a privileged user combined with a low complexity attack may enable escalation of privilege. This resu...

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-2026-38973

CVE-2026-38973 affects mrubyc (mruby/c) up to release 3.4.1. The issue is an out-of-bounds read in the builtin missing-method lookup inside mrbc_find_method(), with no exploitation details provided in the documents. Suggested remediations include updating to a newer version than 3.4.1 (e.g., 3.4....

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 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

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...