CVE-2026-92021 Use-after-free in the JavaScript Engine: JIT component

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16 and Thunderbird 140.16...

CVE-2026-92021

A use-after-free vulnerability exists in the JavaScript Engine: JIT component of the Firefox browser and Thunderbird mail client. This flaw was addressed in Firefox ESR 140.16 and Thunderbird 140.16 . No specific exploit details or in-the-wild exploitation information are provided in the documents.

EUVD-2026-78484

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16 and Thunderbird 140.16...

PCRE2: PCRE2: Out-of-bounds read via invalid UTF data during JIT fallback

A flaw was found in PCRE2. An attacker can provide invalid UTF Unicode Transformation Format data, leading to an out-of-bounds read during a Just-In-Time JIT fallback. This vulnerability could potentially result in a denial of service...

SUSE-SU-2026:23740-1 Security update for pcre2

This update for pcre2 fixes the following issues: - CVE-2026-86145: missing size checks in pcre2dfamatch code can lead to an out-of-bounds write bsc1279893. - CVE-2026-89156: out-of-bounds read via invalid UTF data during JIT fallback bsc1280054. - CVE-2026-89157: out-of-bounds write via large...

SUSE-SU-2026:23840-1 Security update for pcre2

This update for pcre2 fixes the following issues: - CVE-2026-86145: missing size checks in pcre2dfamatch code can lead to an out-of-bounds write bsc1279893. - CVE-2026-89156: out-of-bounds read via invalid UTF data during JIT fallback bsc1280054. - CVE-2026-89157: out-of-bounds write via large...

CVE-2026-92021: Use After Free

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16 and Thunderbird 140.16...

KLA91285 Multiple vulnerabilities in Mozilla Thunderbird ESR

Multiple vulnerabilities were found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, execute arbitrary code, obtain sensitive information. Below is a complete list of vulnerabilities: 1. Security vulnerability can ...

KLA91284 Multiple vulnerabilities in Mozilla Firefox ESR

Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, execute arbitrary code, obtain sensitive information. Below is a complete list of vulnerabilities: 1. A remote code execution...

PT-2026-91957

Name of the Vulnerable Software and Affected Versions Firefox ESR versions prior to 140.16 Thunderbird versions prior to 140.16 Description A use-after-free issue exists within the Just-In-Time JIT component of the JavaScript Engine. A use-after-free is a memory corruption flaw that occurs when a...

Astra Linux – Vulnerability in Firefox and Thunderbird

A potential memory corruption vulnerability could be triggered if an attacker had the ability to cause a “Out-of-Memory” exception at a specific moment during JIT compilation. This vulnerability affects Firefox 131, Firefox ESR 128.3, Thunderbird 128.3, and Thunderbird 131...

Astra Linux – Vulnerability in Firefox

An attacker could read 32 bits of values that were spilled onto the stack in a JIT-compiled function. This vulnerability was fixed in Firefox 137 and Thunderbird 137...

Astra Linux – Vulnerability in Firefox and 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

A transient execution vulnerability, named Floating Point Value Injection FPVI, allowed attackers to leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. A related vulnerability, Speculative Code Store Bypass SCSB, did not affect Firefox. This vulnerability affect...

Astra Linux – Vulnerability in Firefox and Thunderbird

GetBoundName might return the wrong version of an object when JIT optimizations are applied. This vulnerability affects Firefox 125, Firefox ESR 115.10, and Thunderbird 115.10...

Astra Linux – Vulnerability in Firefox

JIT compilation errors in the JavaScript Engine: JIT component. This vulnerability has been fixed in Firefox 145 and Thunderbird 145...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf, s390: Fixed a potential memory leak related to jitdata. Make sure that jitdata is freed through kfree in the error path...

Astra Linux – Vulnerability in Firefox, Thunderbird

JIT compilation errors in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6...

Astra Linux – Vulnerability in Firefox and Thunderbird

JIT compilation errors in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6...

Astra Linux – Vulnerability in Firefox and Thunderbird

JIT compilation errors in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9...