NULL pointer dereference in Linux kernel - CVE-2021-47050
Published: June 1, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90649
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-2021-47050
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 rpcif_sw_init() function in drivers/memory/renesas-rpc-if.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/71bcc1b4a1743534d8abdcb57ff912e6bc390438
- https://git.kernel.org/stable/c/e16acc3a37f09e18835dc5d8014942c2ef6ca957
- https://git.kernel.org/stable/c/a74cb41af7dbe019e4096171f8bc641c7ce910ad
- https://git.kernel.org/stable/c/59e27d7c94aa02da039b000d33c304c179395801
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13