firefox: thunderbird: JavaScript engine only wrote partial return value to stack

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: On 64-bit platforms, IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, reads the entire 64 bits...

RLSA-2025:2452 Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fixes: firefox: Use-after-free in WebTransportChild CVE-2025-1931 firefox: AudioIPC StreamData could trigger a use-after-free in the Browser process CVE-2025-1930 firefox:...

firefox: thunderbird: JavaScript engine only wrote partial return value to stack

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: On 64-bit platforms, IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, reads the entire 64 bits...

firefox: thunderbird: JavaScript engine only wrote partial return value to stack

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: On 64-bit platforms, IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, reads the entire 64 bits...

FreeBSD : Mozilla -- IonMonkey-JIT bad stack write (3c234220-685e-11f0-a12d-b42e991fc52e)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 3c234220-685e-11f0-a12d-b42e991fc52e advisory. [email protected] reports: On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return...

DEBIAN-CVE-2025-8027

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and...

CVE-2025-8027

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability affects Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbi...

CVE-2025-8027

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and...

UBUNTU-CVE-2025-8027

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and...

CVE-2025-8027 JavaScript engine only wrote partial return value to stack

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and...

CVE-2025-8027 JavaScript engine only wrote partial return value to stack

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and...

CVE-2025-8027

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and...

CVE-2025-8027

On 64-bit platforms, CVE-2025-8027 is caused by a discrepancy where IonMonkey-JIT only writes 32 bits of the 64-bit return value space onto the stack, while Baseline-JIT reads the full 64 bits. This unvalidated return value vulnerability can allow attackers to compromise the confidentiality, inte...

CVE-2025-8027

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and...

PT-2025-30476

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 141 Firefox ESR versions prior to 115.26 Firefox ESR versions prior to 128.13 Firefox ESR versions prior to 140.1 Thunderbird versions prior to 141 Thunderbird versions prior to 128.13 Thunderbird versions prior to...

CVE-2025-8027: Use of Uninitialized Variable

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and...

Mozilla -- IonMonkey-JIT bad stack write

[email protected] reports: On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits...

Mozilla Firefox ESR < 128.13

The version of Firefox ESR installed on the remote Windows host is prior to 128.13. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-58 advisory. - Memory safety bugs present in Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140....

Security Vulnerabilities fixed in Thunderbird 140.1 — Mozilla

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. On arm64, a WASM brtable instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrec...

[SECURITY] Fedora 42 Update: pypy-7.3.20-2.fc42

PyPy's implementation of Python, featuring a Just-In-Time compiler on some CPU architectures, and various optimized implementations of the standard types strings, dictionaries, etc This build of PyPy has JIT-compilation enabled...