CVE-2024-6603

Memory corruption in thread creation

Published Jul 9, 2024 CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-5727-1 firefox-esr security update
Debian DSA Debian DSA DSA-5733-1 thunderbird security update
Ubuntu USN Ubuntu USN USN-6890-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-6903-1 Thunderbird vulnerabilities
History
Type Values Removed Values Added
First Time appeared Mozilla firefox Esr
CPEs cpe:2.3:a:mozilla:firefox:-:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Mozilla: Memory corruption in thread creation Memory corruption in thread creation
Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Mozilla thunderbird
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Vendors & Products Mozilla
Mozilla firefox
Mozilla thunderbird
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Oct 30, 2025, 4:14 PM
Reserved
Jul 9, 2024, 2:12 PM
Status
Analyzed
Published
Jul 9, 2024, 3:15 PM
Modified
Jun 17, 2026, 8:18 AM
Severity
Moderate
Public date
Jul 9, 2024, 12:00 AM