CVE-2023-53701
kernel: Kernel: Denial of Service in Netfilter's nf_tables component
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 22, 2025
Updated · June 30, 2026
Description
A vulnerability was identified in the Linux kernel’s netfilter nf_tables subsystem that could lead to wild memory access under specific conditions. When deleting elements from an anonymous set already removed in the same transaction during nftables operations, internal state handling did not properly deactivate the set, leading to a potential write of invalid memory. On systems with Kernel Address Sanitizer (KASAN) enabled or during certain transaction flows, this flaw can result in a write at an invalid address, causing system instability.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer