RLSA-2025:2452

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

Security Fix(es):

• firefox: Use-after-free in WebTransportChild (CVE-2025-1931)

• firefox: AudioIPC StreamData could trigger a use-after-free in the Browser process (CVE-2025-1930)

• firefox: Unexpected GC during RegExp bailout processing (CVE-2025-1934)

• firefox: Clickjacking the registerProtocolHandler info-bar Reporter (CVE-2025-1935)

• firefox: thunderbird: Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8 (CVE-2025-1938)

• firefox: JIT corruption of WASM i32 return values on 64-bit CPUs (CVE-2025-1933)

• firefox: thunderbird: Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8 (CVE-2025-1937)

• firefox: Inconsistent comparator in XSLT sorting led to out-of-bounds access (CVE-2025-1932)

• firefox: Adding %00 and a fake extension to a jar: URL changed the interpretation of the contents (CVE-2025-1936)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.