CVE-2024-35897: netfilter: nf_tables: discard table flag update with pending basechain deletion

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-19 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: discard table flag update with pending basechain deletion Hook unregistration is deferred to the commit phase, same occurs with hook updates triggered by the table dormant flag. When both commands are combined, this results in deleting a basechain while leaving its hook still registered in the core.

Affected products

Debian Linux: 10.0
Linux kernel: from 5.4.262 before 5.4.274; from 5.10.202 before 5.10.215; from 5.13.1 before 5.15.155; from 5.16 before 6.1.86; from 6.2 before 6.6.26; from 6.7 before 6.8.5 — fixed in 5.10.215, 5.15.155, 5.4.274, 6.1.86, 6.6.26, 6.8.5

How to fix

Upgrade to a fixed version: Linux kernel 5.10.215, 5.15.155, 5.4.274, 6.1.86. Check the vendor advisory for mitigations.

References

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