VYPR
Critical severity9.8NVD Advisory· Published Feb 26, 2025· Updated Aug 4, 2026

CVE-2022-49561

CVE-2022-49561

Description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: conntrack: re-fetch conntrack after insertion

In case the conntrack is clashing, insertion can free skb->_nfct and set skb->_nfct to the already-confirmed entry.

This wasn't found before because the conntrack entry and the extension space used to free'd after an rcu grace period, plus the race needs events enabled to trigger.

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Affected products

12

Patches

Vulnerability mechanics

References

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