CVE-2024-39276

CVE-2024-39276: Linux kernel ext4 mb_cache_entry e_refcnt leak fixed. In ext4_xattr_block_cache_find(), on failure from ext4_sb_bread() returning -ENOMEM, the ce’s e_refcnt could leak, triggering mb_cache_destroy(). Quick fix: call mb_cache_entry_put() on the -ENOMEM error path. Connected Astra L...

CVE-2025-21959

CVE-2025-21959 affects the Linux kernel netfilter nf_conncount code. The issue arises from not initializing fields cpu and jiffies32 in struct nf_conncount_tuple during insertion (insert_tree()), after prior fixes added cpu/jiffies32 in nf_conncount_add() but count_tree() path remained uninitiali...

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...