#VU90135 Use-after-free in Linux kernel - CVE-2021-47357
Published: May 31, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90135
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47357
CWE-ID: CWE-416
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 escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ia_module_exit() function in drivers/atm/iphase.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/9e161687855175334ca93c6c3ccb221731194479
- https://git.kernel.org/stable/c/a832ee2f2145f57443b2d565f8cb5490e8339f42
- https://git.kernel.org/stable/c/bcdd2be48edd8c6867fb44112cb8d18086beae29
- https://git.kernel.org/stable/c/89ce0b0747f319eb70f85bc820dcc43cebbd5417
- https://git.kernel.org/stable/c/c9172498d4d62c9b64e5fb37c1ee0343e65fe51b
- https://git.kernel.org/stable/c/e759ff76ebbbfcdcf83b6634c54dc47828573d8b
- https://git.kernel.org/stable/c/b58d246a058ae88484758cd4ab27b3180fd5ecf8
- https://git.kernel.org/stable/c/d1fb12412874c94ad037e11d0ecdd1140a439297
- https://git.kernel.org/stable/c/1c72e6ab66b9598cac741ed397438a52065a8f1f
- 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-4.4.276
- 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