NULL pointer dereference in Linux kernel - CVE-2021-47578
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92340
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-2021-47578
CWE-ID: CWE-476
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 NULL pointer dereference within the resp_verify() and resp_report_zones() functions 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/aa1f912712a109b6306746133de7e5343f016b26
- https://git.kernel.org/stable/c/47d11d35203b0aa13533634e270fe2c3610e531b
- https://git.kernel.org/stable/c/3344b58b53a76199dae48faa396e9fc37bf86992
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.88
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16