Use of Uninitialized Variable Affecting firefox package, versions <0:140.1.0-1.amzn2023.0.2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-AMZN2023-FIREFOX-12023832
  • published19 Aug 2025
  • disclosed22 Jul 2025

Introduced: 22 Jul 2025

CVE-2025-8027  (opens in a new tab)
CWE-457  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 firefox to version 0:140.1.0-1.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2025-1148.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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 Thunderbird < 140.1.

CVSS Base Scores

version 3.1