#VU93821 Out-of-bounds read in Linux kernel - CVE-2024-39482

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an out-of-bounds read error within the bch_dirty_init_thread() and bch_sectors_dirty_init() functions in drivers/md/bcache/writeback.c, within the bch_root_usage() function in drivers/md/bcache/sysfs.c, within the bch_cache_set_alloc() function in drivers/md/bcache/super.c, within the btree_gc_mark_node(), btree_gc_rewrite_node(), btree_gc_recurse(), bch_btree_check_recurse(), bch_btree_check_thread(), bch_btree_check(), bch_btree_map_nodes_recurse() and bch_btree_map_keys_recurse() functions in drivers/md/bcache/btree.c, within the bch_dump_bucket(), __bch_check_keys(), bch_btree_insert_key(), bch_btree_iter_push(), bch_btree_sort_partial() and bch_btree_sort_into() functions in drivers/md/bcache/bset.c. A local user can perform a denial of service (DoS) attack.

Remediation

External links

• https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02
• https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148
• https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671
• https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31
• https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b
• https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.162