SB20240531279 - Out-of-bounds read in Linux kernel block
Published: May 31, 2024
Security Bulletin ID
SB20240531279
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2021-46984)
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 dd_request_merge() function in block/mq-deadline.c, within the kyber_limit_depth() function in block/kyber-iosched.c, within the __blk_mq_sched_bio_merge() function in block/blk-mq-sched.c, within the bfq_remove_request() function in block/bfq-iosched.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/0b6b4b90b74c27bea968c214d820ba4254b903a5
- https://git.kernel.org/stable/c/54dbe2d2c1fcabf650c7a8b747601da355cd7f9f
- https://git.kernel.org/stable/c/a287cd84e047045f5a4d4da793414e848de627c6
- https://git.kernel.org/stable/c/2ef3c76540c49167a0bc3d5f80d00fd1fc4586df
- https://git.kernel.org/stable/c/efed9a3337e341bd0989161b97453b52567bc59d