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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2025-8027

JavaScript engine only wrote partial return value to stack

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Status
Published
Published
Updated
Assigning organization
mozilla

Description

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 Thunderbird 140.1.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mozilla Firefox

  • 115.26 to ≤ 115.*unaffected
  • 128.13 to ≤ 128.*unaffected
  • 140.1 to ≤ 140.*unaffected
  • 141 to ≤ *unaffected

Mozilla Thunderbird

  • 128.13 to ≤ 128.*unaffected
  • 140.1 to ≤ 140.*unaffected
  • 141 to ≤ *unaffected

References