CVE-2023-52643

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

iio: core: fix memleak in iio_device_register_sysfs

When iio_device_register_sysfs_group() fails, we should free iio_dev_opaque->chan_attr_group.attrs to prevent potential memleak.

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/1c6d19c8cbf6abcea2c8fca2db26abca2cbf0363
• https://git.kernel.org/stable/c/359f220d0e753bba840eac19ffedcdc816b532f2
• https://git.kernel.org/stable/c/3db312e06851996e7fb27cb5a8ccab4c0f9cdb93
• https://git.kernel.org/stable/c/95a0d596bbd0552a78e13ced43f2be1038883c81
• https://git.kernel.org/stable/c/b90126c86d83912688501826643ea698f0df1728
• https://git.kernel.org/stable/c/1c6d19c8cbf6abcea2c8fca2db26abca2cbf0363
• https://git.kernel.org/stable/c/359f220d0e753bba840eac19ffedcdc816b532f2
• https://git.kernel.org/stable/c/3db312e06851996e7fb27cb5a8ccab4c0f9cdb93
• https://git.kernel.org/stable/c/95a0d596bbd0552a78e13ced43f2be1038883c81
• https://git.kernel.org/stable/c/b90126c86d83912688501826643ea698f0df1728