SB20250117105 - Improper locking in Linux kernel block

Description

This security bulletin contains information about 1 security vulnerability.

1) Improper locking (CVE-ID: CVE-2024-53689)

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

The vulnerability exists due to improper locking within the queue_attr_store() function in block/blk-sysfs.c, within the blk_mq_realloc_hw_ctxs(), blk_mq_init_allocated_queue(), blk_mq_elv_switch_none(), blk_mq_elv_switch_back(), __blk_mq_update_nr_hw_queues() and list_for_each_entry() functions in block/blk-mq.c, within the blk_mq_sysfs_unregister_hctxs() and blk_mq_sysfs_register_hctxs() functions in block/blk-mq-sysfs.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/be26ba96421ab0a8fa2055ccf7db7832a13c44d2
• https://git.kernel.org/stable/c/f1a494df8350da2e673618627cb392a8669825dd
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.6