Dear deepin users and community partners, Recently, the deepin community detected a high-risk local privilege escalation vulnerability in the Linux kernel. This vulnerability, dubbed "Copy Fail" (CVE-2026-31431), exists in the Linux kernel cryptographic subsystem (the algif_aead module). It originates from a code optimization introduced in 2017, which causes the AF_ALG cryptographic interface to potentially share the same kernel page cache page between the source and destination buffers when processing AEAD cryptographic operations. Given its severity and widespread impact, we strongly recommend that all users upgrade as soon as possible to ensure the security of your systems.   I. Vulnerability Information CVE ...Read more