SB2024070560 - Out-of-bounds read in Linux kernel md bcache driver

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Main Vulnerability Database SB2024070560

SB2024070560 - Out-of-bounds read in Linux kernel md bcache driver

Published: July 5, 2024 Updated: May 13, 2025

Security Bulletin ID SB2024070560
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2024-39482)

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

Install update from vendor's website.

References