CVE-2026-74564

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_hashlimit: validate hashtable supports XT_HASHLIMIT_RATE_MATCH The XT_HASHLIMIT_RATE_MATCH flag mode changes the semantics of the dsthash_ent structure which represents an entry in the hashtable. There is a union area which uses a different layout to express the rate match mode. Update .checkentry path to validate the XT_HASHLIMIT_RATE_MATCH mode flag is requested by two or more different rules that refer to the same hashtable. Otherwise, uninitialized access to the burst field in the union is possible. Reject the use of the XT_HASHLIMIT_RATE_MATCH mode flag if set on by revision less than 3 too.

Published 15 Aug 2026, 13:18 UTC Last modified 15 Aug 2026, 13:18 UTC

Attack profile

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Attack vector Not assessed

Attack complexity Not assessed

Privileges required Not assessed

User interaction Not assessed

Scope Not assessed

Confidentiality Not assessed

Integrity Not assessed

Availability Not assessed

Affected products

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NVD has not published structured affected-product data for this record.

Weakness classification

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Weakness classification is still awaiting analysis.

Source references

External advisories, patches and technical reports attached to this CVE record.

NVD National Vulnerability Database recordnvd.nist.gov 01 Technical reference 416baaa9-dc9f-4396-8d5f-8c081fb06d67 02 Technical reference 416baaa9-dc9f-4396-8d5f-8c081fb06d67 03 Technical reference 416baaa9-dc9f-4396-8d5f-8c081fb06d67 04 Technical reference 416baaa9-dc9f-4396-8d5f-8c081fb06d67 05 Technical reference 416baaa9-dc9f-4396-8d5f-8c081fb06d67