Heap-based buffer overflow in Linux kernel - CVE-2022-25636
Published: March 13, 2022 / Updated: June 7, 2024
Vulnerability identifier: #VU61271
CSH Severity: Low
CVSS v4.0: 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:P/U:Clear
CVE-ID: CVE-2022-25636
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in net/netfilter/nf_dup_netdev.c in the Linux kernel, related to nf_tables_offload. A local user can trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.
How to mitigate CVE-2022-25636
Install updates from vendor's website.
Sources
- https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git/commit/?id=b1a5983f56e371046dcf164f90bfaf704d2b89f6
- https://www.openwall.com/lists/oss-security/2022/02/21/2
- http://www.openwall.com/lists/oss-security/2022/02/22/1
- https://www.debian.org/security/2022/dsa-5095
- https://nickgregory.me/linux/security/2022/03/12/cve-2022-25636/
- https://github.com/Bonfee/CVE-2022-25636