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Description

A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 139 and Thunderbird < 128.11.

PUBLISHED Reserved 2025-05-27 | Published 2025-05-27 | Updated 2025-08-25 | Assigner mozilla

Problem types

Double-free in libvpx encoder

Product status

Any version before 139
affected

Any version before 128.11
affected

Credits

Randell Jesup

References

bugzilla.mozilla.org/show_bug.cgi?id=1962421

www.mozilla.org/security/advisories/mfsa2025-45/

www.mozilla.org/security/advisories/mfsa2025-46/

cve.org (CVE-2025-5262)

nvd.nist.gov (CVE-2025-5262)

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