#VU90474 NULL pointer dereference in Linux kernel - CVE-2021-47267
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90474
Vulnerability risk: 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-2021-47267
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 usb_assign_descriptors() function in drivers/usb/gadget/config.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/fd24be23abf3e94260be0f00bb42c7e91d495f87
- https://git.kernel.org/stable/c/70cd19cb5bd94bbb5bacfc9c1e4ee0071699a604
- https://git.kernel.org/stable/c/45f9a2fe737dc0a5df270787f2231aee8985cd59
- https://git.kernel.org/stable/c/5ef23506695b01d5d56a13a092a97f2478069d75
- https://git.kernel.org/stable/c/b972eff874637402ddc4a7dd11fb22538a0b6d28
- https://git.kernel.org/stable/c/ca6bc277430d90375452b60b047763a090b7673e
- https://git.kernel.org/stable/c/032e288097a553db5653af552dd8035cd2a0ba96
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.237
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.195
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.273
- 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