CVE-2024-26925: 
Linux Kernel vulnerability analysis and mitigation

CVE-2024-26925 affects the Linux kernel's netfilter subsystem, specifically the nf_tables component. The vulnerability was discovered in April 2024 and involves improper mutex handling during the garbage collection (GC) process (Kernel Git).

The vulnerability stems from a race condition in the mutex handling between nftgcseqbegin() and nftgcseqend() functions. The commit mutex is released during a critical section, which allows an async GC worker to collect expired objects and acquire the released commit lock within the same GC sequence. This occurs when nftablesmodule_autoload() temporarily releases the mutex to load module dependencies (Kernel Git).

The improper mutex handling in the netfilter subsystem could potentially lead to race conditions and system instability. The vulnerability affects the kernel's network filtering capabilities, which are critical for system security and network traffic management (NVD).

The issue has been fixed by moving the module autoload operation to the end of the abort phase after nftgcseq_end() is called. The fix has been implemented across multiple Linux kernel versions and distributions. Ubuntu and Debian have released patches for affected versions (Debian LTS).