RHSA-2025:2479 - Security Advisory

Topic

An update for firefox is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 x86_64
• Red Hat Enterprise Linux Server - AUS 9.4 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64
• Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x

Fixes

• BZ - 2349786 - CVE-2025-1931 firefox: Use-after-free in WebTransportChild
• BZ - 2349787 - CVE-2025-1930 firefox: AudioIPC StreamData could trigger a use-after-free in the Browser process
• BZ - 2349790 - CVE-2025-1934 firefox: Unexpected GC during RegExp bailout processing
• BZ - 2349792 - CVE-2025-1935 firefox: Clickjacking the registerProtocolHandler info-bar Reporter
• BZ - 2349793 - CVE-2025-1938 firefox: thunderbird: Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8
• BZ - 2349794 - CVE-2025-1933 firefox: JIT corruption of WASM i32 return values on 64-bit CPUs
• BZ - 2349795 - CVE-2025-1937 firefox: thunderbird: Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8
• BZ - 2349796 - CVE-2025-1932 firefox: Inconsistent comparator in XSLT sorting led to out-of-bounds access
• BZ - 2349797 - CVE-2025-1936 firefox: Adding %00 and a fake extension to a jar: URL changed the interpretation of the contents

CVEs

• CVE-2025-1930
• CVE-2025-1931
• CVE-2025-1932
• CVE-2025-1933
• CVE-2025-1934
• CVE-2025-1935
• CVE-2025-1936
• CVE-2025-1937
• CVE-2025-1938

References

• https://access.redhat.com/security/updates/classification/#important