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Description

A race during concurrent delazification could have led to a use-after-free. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.

PUBLISHED Reserved 2025-02-04 | Published 2025-02-04 | Updated 2025-11-03 | Assigner mozilla

Problem types

Use-after-free during concurrent delazification

Product status

Any version before 135
affected

Any version before 115.20
affected

Any version before 128.7
affected

Any version before 128.7
affected

Any version before 135
affected

Credits

Nils Bars

References

lists.debian.org/debian-lts-announce/2025/02/msg00006.html

lists.debian.org/debian-lts-announce/2025/02/msg00005.html

bugzilla.mozilla.org/show_bug.cgi?id=1939710

www.mozilla.org/security/advisories/mfsa2025-07/

www.mozilla.org/security/advisories/mfsa2025-08/

www.mozilla.org/security/advisories/mfsa2025-09/

www.mozilla.org/security/advisories/mfsa2025-10/

www.mozilla.org/security/advisories/mfsa2025-11/

cve.org (CVE-2025-1012)

nvd.nist.gov (CVE-2025-1012)

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