NULL pointer dereference in Linux kernel - CVE-2021-47266
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90472
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-2021-47266
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 ipoib_get_size() function in drivers/infiniband/ulp/ipoib/ipoib_netlink.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/64f1fb6acc2ab95982fc4334f351d7576c26f313
- https://git.kernel.org/stable/c/67cf4e447b5e5e9e94996cb6812ae2828e0e0e27
- https://git.kernel.org/stable/c/0a672f7d89db2da17ae02733ccc08458be72a6f8
- https://git.kernel.org/stable/c/a3e74fb9247cd530dca246699d5eb5a691884d32
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.44
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.126