CVE-2024-6603

Memory corruption in thread creation

State: Published
Severity: 7.4 High
Published: Jul 9, 2024
Updated: Oct 30, 2025
Reserved: Jul 9, 2024

Description

In an out-of-memory scenario an allocation could fail but free would have been called on the pointer afterwards leading to memory corruption. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.

Scores

CVSS	Score	Vector	Source
3.1	7.4 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N	CISA-ADP

Weaknesses

CWE-823 Use of Out-of-range Pointer Offset

Affected Products

Product	Versions
FirefoxMozilla	before 128Affected
Firefox ESRMozilla	before 115.13Affected
ThunderbirdMozilla	before 115.13Affected
ThunderbirdMozilla	before 128Affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1895081
https://www.mozilla.org/security/advisories/mfsa2024-29/
https://www.mozilla.org/security/advisories/mfsa2024-30/
https://www.mozilla.org/security/advisories/mfsa2024-31/
https://www.mozilla.org/security/advisories/mfsa2024-32/

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