PT-2026-22911 · Linux+3 · Linux Kernel+3
Published
2026-03-04
·
Updated
2026-05-26
·
CVE-2026-23231
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a use-after-free issue within the nf tables module, specifically in the
nf tables addchain() function. This function publishes a chain before registering hooks, and if hook registration fails, the chain can be freed while still being accessed by control-plane operations like nf tables dump chains() or packet-path operations during transient IPv4 hook installation. The issue arises from a lack of an RCU grace period between chain deletion and destruction, potentially leading to dereferencing freed memory.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Rocky Linux
Ubuntu