CVE-2025-21812

CVE-2025-21812 concerns AX25 code in the Linux kernel. A lockdep/potential deadlock issue was observed around ax25_setsockopt() where a syzbot thread attempting to acquire rtnl_mutex could deadlock with a thread holding sk_lock-AF_AX25, due to an existing dependency chain involving ax25_setsockop...

CVE-2025-21931

CVE-2025-21931 affects the Linux kernel memory hotplug path (hwpoison) and was fixed by ensuring folio lock is held before unmapping hwpoisoned folio. The fix adds the folio lock around unmap calls in do_migrate_range/try_to_unmap to prevent the kernel BUG triggered when folio is not locked. The ...

CVE-2026-31781

CVE-2026-31781 concerns the Linux kernel drm/ioc32 compat ioctl path, where a user-controlled pointer was used to index a table of function pointers (spectre-like pattern). The issue is mitigated by applying array_index_nospec on the index to the function-pointer list, as described in the fix. Co...