In the Linux kernel, the following vulnerability has been resolved: crypto: null - Use spin lock instead of mutex As the null algorithm may be freed in softirq context through af_alg, use spin locks instead of mutexes to protect the default null algorithm.
https://git.kernel.org/stable/c/f7a5a5c8e1ec16a4b2041398abe95de0e14572ef
https://git.kernel.org/stable/c/e307c54ac8198bf09652c72603ba6e6d97798410
https://git.kernel.org/stable/c/e27244cbe10658a66b8775be7f0acc4ad2f618d6
https://git.kernel.org/stable/c/dcc47a028c24e793ce6d6efebfef1a1e92f80297
https://git.kernel.org/stable/c/8cf2945512a8c0ef74ddd5b5a4f6b6a2fb1a4efb
https://git.kernel.org/stable/c/1dd4a8561d85dea545cf93f56efc48df8176e218
https://git.kernel.org/stable/c/1b66a5920b7fc7cc6251192a3fcad115b6d75dd5
https://git.kernel.org/stable/c/0486de3c1b8223138dcc614846bd76364f758de6