#VU89951 Memory leak in Linux kernel - CVE-2021-47250
Published: May 30, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU89951
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-2021-47250
CWE-ID: CWE-401
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 memory leak within the cipso_v4_doi_free() function in net/ipv4/cipso_ipv4.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/212166510582631994be4f4b3fe15e10a03c1dd4
- https://git.kernel.org/stable/c/086e92b1d68c6338535f715aad173f8cf4bfbc8c
- https://git.kernel.org/stable/c/6dcea66d3bb519b426282588f38e884e07893c1f
- https://git.kernel.org/stable/c/5340858147e3dc60913fb3dd0cbb758ec4a26e66
- https://git.kernel.org/stable/c/398a24447eb60f060c8994221cb5ae6caf355fa1
- https://git.kernel.org/stable/c/deeeb65c6ee404f2d1fb80b38b2730645c0f4663
- https://git.kernel.org/stable/c/0ffb460be3abac86f884a8c548bb02724ec370f4
- https://git.kernel.org/stable/c/d612c3f3fae221e7ea736d196581c2217304bbbc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.238
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.196
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.274
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.274
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.46
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.128