Linux Kernel Zram Use-After-Free Vulnerability

A use-after-free vulnerability has been identified in the zram component of the Linux kernel. This issue arises because, if the zram_meta_alloc function fails early, the allocated zram->table is freed but not set to NULL. As a result, there is a potential for the zram_meta_free function to access the table, particularly if the user resets a device that has failed and remains uninitialized.

Impact

Exploitation of this vulnerability could lead to a use-after-free condition, which may be exploited to cause memory corruption or execute arbitrary code.