Use of uninitialized resource in Linux kernel - CVE-2021-47597
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92934
CSH Severity: Low
CVSS v4.0: 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-2021-47597
CWE-ID: CWE-908
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to use of uninitialized resource within the inet_sk_diag_fill() function in net/ipv4/inet_diag.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2021-47597
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/7b5596e531253ce84213d9daa7120b71c9d83198
- https://git.kernel.org/stable/c/3a4f6dba1eb98101abc012ef968a8b10dac1ce50
- https://git.kernel.org/stable/c/e5d28205bf1de7082d904ed277ceb2db2879e302
- https://git.kernel.org/stable/c/71ddeac8cd1d217744a0e060ff520e147c9328d1
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.88
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.168