vulnerability
Red Hat: CVE-2023-53566: kernel: netfilter: nft_set_rbtree: fix null deref on element insertion (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:M/Au:M/C:C/I:C/A:C) | Oct 4, 2025 | Nov 14, 2025 | Feb 9, 2026 |
Severity
6
CVSS
(AV:L/AC:M/Au:M/C:C/I:C/A:C)
Published
Oct 4, 2025
Added
Nov 14, 2025
Modified
Feb 9, 2026
Description
A flaw was found in the Netfilter subsystem in the Linux kernel. A NULL pointer dereference and a use-after-free issue can be triggered due to an improper check and an improper way of iterating a red-black tree during garbage collector operations, potentially resulting in a denial of service and possibly privilege escalation.
Solution
redhat-upgrade-kernel
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