#VU93675 Input validation error in Linux kernel - CVE-2021-47336
Published: July 2, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93675
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-2021-47336
CWE-ID: CWE-20
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 improper input validation within the smk_set_cipso() function in security/smack/smackfs.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/5f9880403e6b71d56924748ba331daf836243fca
- https://git.kernel.org/stable/c/5c2dca9a7a7ff6a2df34158903515e2e4fd3d2b2
- https://git.kernel.org/stable/c/cbd87ba6a13891acf6180783f8234a8b7a3e3d4d
- https://git.kernel.org/stable/c/135122f174c357b7a3e58f40fa5792156c5e93e6
- https://git.kernel.org/stable/c/3780348c1a0e14ffefcaf1fc521f815bcaac94b0
- https://git.kernel.org/stable/c/8f5c773a2871cf446e3f36b2834fb25bbb28512b
- https://git.kernel.org/stable/c/258fd821f69378453c071b9dd767b298810fc766
- https://git.kernel.org/stable/c/49ec114a6e62d8d320037ce71c1aaf9650b3cafd
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.240
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.198
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.276
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.51
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.18
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.133