CVE-2024-50170

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

net: bcmasp: fix potential memory leak in bcmasp_xmit()

The bcmasp_xmit() returns NETDEV_TX_OK without freeing skb in case of mapping fails, add dev_kfree_skb() to fix it.

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/7218de0778aefbbbcfe474a55f88bbf6f244627d
• https://git.kernel.org/stable/c/f689f20d3e09f2d4d0a2c575a9859115a33e68bd
• https://git.kernel.org/stable/c/fed07d3eb8a8d9fcc0e455175a89bc6445d6faed