SB2025062088 - Improper locking in Linux kernel block

Description

This security bulletin contains information about 1 vulnerability.

1) Improper locking (CVE-ID: CVE-2025-38073)

CWE-ID: CWE-667 - Improper Locking

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

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

The vulnerability exists due to improper locking within the blk_ioctl_discard(), blk_finish_plug(), blk_ioctl_secure_erase() and blk_ioctl_zeroout() functions in block/ioctl.c, within the blkdev_write_iter(), blkdev_read_iter() and blkdev_fallocate() functions in block/fops.c, within the blkdev_zone_mgmt_ioctl() function in block/blk-zoned.c, within the set_blocksize() function in block/bdev.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/64f505b08e0cfd8163491c8c082d4f47a88e51d4
• https://git.kernel.org/stable/c/8c5cf440a378801d313eb58be996fdc81a8878a4
• https://git.kernel.org/stable/c/c0e473a0d226479e8e925d5ba93f751d8df628e9