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
#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
#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
#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
#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.