CVE-2025-22030 mm: zswap: fix crypto_free_acomp() deadlock in zswap_cpu_comp_dead()

In the Linux kernel, the following vulnerability has been resolved: mm: zswap: fix cryptofreeacomp deadlock in zswapcpucompdead Currently, zswapcpucompdead calls cryptofreeacomp while holding the per-CPU acompctx mutex. cryptofreeacomp then holds scomplock through cryptoexitscompopsasync. On the...

CVE-2025-22030

CVE-2025-22030 involves a deadlock in the Linux kernel zswap path. The root cause: zswap_cpu_comp_dead() can call crypto_free_acomp() while holding the per-CPU acomp_ctx mutex, while crypto_free_acomp() may attempt to acquire scomp_lock via crypto_exit_scomp_ops_async(), and crypto_alloc_acomp_no...