CVE-2019-19036

CVE-2019-19036 affects the Linux kernel's Btrfs code: btrfs_root_node in fs/btrfs/ctree.c may dereference root->node via rcu_dereference even when it is zero, causing a NULL pointer dereference in kernels up to 5.3.12. The issue is confirmed in Nessus/Unity Linux advisory UTSA-2026-003667, whi...

CVE-2019-19039

CVE-2019-19039 is a Linux kernel vulnerability affecting btrfs: the function __btrfs_free_extent in fs/btrfs/extent-tree.c may trigger a path in btrfs_print_leaf during an ENOENT case, enabling a local attacker to obtain potentially sensitive information about register values via dmesg. The descr...

CVE-2019-19037

CVE-2019-19037 affects the Linux kernel ext4 implementation: ext4_empty_dir in fs/ext4/namei.c up to kernel 5.3.12 can trigger a NULL pointer dereference when ext4_read_dirblock(inode,0,DIRENT_HTREE) evaluates to zero. Connected Nessus advisories (Unity Linux UTSA-2026-003782/003750/001396) echo ...