CVE-2026-12321

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: JIT miscompilation in the JavaScript: WebAssembly component...

Astra Linux – Vulnerability in Firefox and Thunderbird

On arm64, WASM code might result in incorrect assembly generation, leading to a register allocation issue and potentially a exploitable crash. This vulnerability affects Thunderbird 91.10, Firefox 101, and Firefox ESR 91.10...

Astra Linux – Vulnerability in Firefox and Thunderbird

Incomplete handling of WebAssembly exceptions could lead to a use-after-free vulnerability. This vulnerability affects Firefox 129, Firefox ESR 115.14, Firefox ESR 128.1, Thunderbird 128.1, and Thunderbird 115.14...

Astra Linux – Vulnerability in Firefox

The frame iterator could get stuck in a loop when encountering certain Wasm frames, leading to incorrect stack traces. This vulnerability affects Firefox 128 and Thunderbird 128...

Astra Linux – Vulnerability in Firefox

A stop condition for the iterator was missing when handling WASM code in the built-in profiler, potentially leading to invalid memory access and undefined behavior. Note: This issue only affects the application when the profiler is running. This vulnerability affects Firefox versions less than 12...

Astra Linux – Vulnerability in Firefox, Thunderbird

The WebAssembly JIT might miscalculate the size of a return type, which could lead to a null read and result in a crash. Note: This issue only affected x86-32 platforms. Other platforms are unaffected.. This vulnerability affects Firefox ESR 78.10, Thunderbird 78.10, and Firefox 88...

Astra Linux – Vulnerability in Firefox

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148...

Astra Linux – Vulnerability in Firefox

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148...

Astra Linux – Vulnerability in Firefox and Thunderbird

In some cases, a stale value might have been used for a global variable during WASM JIT analysis. This led to incorrect compilation and potentially exploitable crashes in the content process. This vulnerability affects Firefox 116, Firefox ESR 102.14, and Firefox ESR 115.1...

Astra Linux – Vulnerability in Firefox, Thunderbird

Inconsistent data in the instruction and data cache when creating Wasm code can lead to a potentially exploitable crash.This bug only affects Firefox on ARM64 platforms.. This vulnerability affects Firefox ESR 102.3, Thunderbird 102.3, and Firefox 105...

Astra Linux – Vulnerability in Firefox

A type confusion bug in WebAssembly could be exploited by an attacker to potentially execute malicious code. This vulnerability affects Firefox 129, Firefox ESR 128.1, and Thunderbird 128.1...

Astra Linux – Vulnerability in Thunderbird, Firefox

On 64-bit CPUs, when the JIT compiler compiles WASM i32 return values, it may pick up bits from remaining memory. This could potentially lead to these values being treated as a different type. This vulnerability has been fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136...

Astra Linux – Vulnerability in Thunderbird, Firefox

A bug in WebAssembly code generation could potentially lead to a crash. It might have been possible for an attacker to exploit this to execute malicious code. This vulnerability has been fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135...

Astra Linux – Vulnerability in Firefox

A use-after-free could occur during WASM execution if garbage collection ran during the creation of an array. This vulnerability affects Firefox 125...

Astra Linux – Vulnerability in Firefox

JIT compilation errors in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148...

Astra Linux – Vulnerability in Firefox

A use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

Astra Linux – Vulnerability in Firefox, Thunderbird

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5...

Astra Linux – Vulnerability in Chromium

Object corruption in WebAssembly in Google Chrome prior to 124.0.6367.60 allowed a remote attacker to potentially exploit object corruption via a crafted HTML page. Chromium security severity: High...

Astra Linux – Vulnerability in Chromium

Type Confusion in WebAssembly in Google Chrome prior to 123.0.6312.86 allowed a remote attacker to execute arbitrary code via a crafted HTML page. Chromium security severity: High...

Astra Linux – Vulnerability in Chromium

Type confusion in WebAssembly in Google Chrome prior to version 126.0.6478.126 allowed a remote attacker to execute arbitrary code via a crafted HTML page. Chromium security severity: High...