Out-of-bounds read in Linux kernel - CVE-2021-47191
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90325
CSH Severity: Low
CVSSv4.0: 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
CVE-ID: CVE-2021-47191
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
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 resp_readcap16() function in drivers/scsi/scsi_debug.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/3e20cb072679bdb47747ccc8bee3233a4cf0765a
- https://git.kernel.org/stable/c/5b8bed6464ad6653586e30df046185fd816ad999
- https://git.kernel.org/stable/c/4e3ace0051e7e504b55d239daab8789dd89b863c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.82
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16