CVE-2021-47031

In the Linux kernel, the following vulnerability has been resolved:

mt76: mt7921: fix memory leak in mt7921_coredump_work

Fix possible memory leak in mt7921_coredump_work.

Weakness

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.

Affected Software

Potential Mitigations

• Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
• For example, glibc in Linux provides protection against free of invalid pointers.
• When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
• To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.

References

• https://git.kernel.org/stable/c/4811226374453607175ea057777faa7e7f752204
• https://git.kernel.org/stable/c/782b3e86ea970e899f8e723db9f64708a15ca30e