Log Message:
firefox115: update to 115.21.0

Mozilla Foundation Security Advisory 2025-15
Security Vulnerabilities fixed in Firefox ESR 115.21

Announced
    March 4, 2025
Impact
    critical
Products
    Firefox ESR
Fixed in

        Firefox ESR 115.21

#CVE-2024-43097: Overflow when growing an SkRegion's RunArray

Reporter
    Google Android
Impact
    critical

Description

In resizeToAtLeast of SkRegion.cpp, there was a possible out of bounds write due \ 
to an integer overflow
References

    Bug 1945624

#CVE-2025-1930: AudioIPC StreamData could trigger a use-after-free in the \ 
Browser process

Reporter
    dalmurino
Impact
    high

Description

On Windows, a compromised content process could use bad StreamData sent over \ 
AudioIPC to trigger a use-after-free in the Browser process. This could have led \ 
to a sandbox escape.
References

    Bug 1902309

#CVE-2025-1931: Use-after-free in WebTransportChild

Reporter
    sherkito
Impact
    high

Description

It was possible to cause a use-after-free in the content process side of a \ 
WebTransport connection, leading to a potentially exploitable crash.
References

    Bug 1944126

#CVE-2025-1933: JIT corruption of WASM i32 return values on 64-bit CPUs

Reporter
    Xiangwei Zhang and kkdong of Tencent Security YUNDING LAB
Impact
    high

Description

On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up \ 
bits from left over memory. This can potentially cause them to be treated as a \ 
different type.
References

    Bug 1946004

#CVE-2025-1937: Memory safety bugs fixed in Firefox 136, Thunderbird 136, \ 
Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8

Reporter
    the Mozilla Fuzzing Team, Andrew McCreight
Impact
    high

Description

Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, \ 
Firefox ESR 128.7, and Thunderbird 128.7. Some of these bugs showed evidence of \ 
memory corruption and we presume that with enough effort some of these could \ 
have been exploited to run arbitrary code.
References

    Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR \ 
115.21, Firefox ESR 128.8, and Thunderbird 128.8