CVE-2023-53267

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

driver: soc: xilinx: fix memory leak in xlnx_add_cb_for_notify_event()

The kfree() should be called when memory fails to be allocated for cb_data in xlnx_add_cb_for_notify_event(), otherwise there will be a memory leak, so add kfree() to fix it.

Weakness

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

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/1bea534991b9b35c41848a397666ada436456beb
• https://git.kernel.org/stable/c/9dfb6c784e385f6e61994bb4e16ce12f3e4940be
• https://git.kernel.org/stable/c/d35290addcbac94b076babe0a798a8c043421812