CVE-2026-52921
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: stop hash:* range iteration at end The following hash set variants: hash:ip,mark hash:ip,port hash:ip,port,ip hash:ip,port,net iterate IPv4 ranges with a 32-bit iterator. The iterator must stop once the last address in the requested range has been processed. Advancing it once more can move the traversal state past the end of the request, so a later retry may continue from an unintended position. Handle the iterator increment explicitly at the end of the loop and stop once the upper bound has been processed. This keeps the existing retry behaviour intact for valid ranges while preventing traversal from continuing past the original boundary.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://git.kernel.org/stable/c/02f75f041a93ea045834da89cd3234f4c1d749b4
- https://git.kernel.org/stable/c/0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dc
- https://git.kernel.org/stable/c/0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6
- https://git.kernel.org/stable/c/0d7b33ace701fe397e6e4de145f32e098178d901
- https://git.kernel.org/stable/c/383418c20e69f5761b6ec5238f599423f4fb77fb
- https://git.kernel.org/stable/c/952e988163c2ab9939c3db9f0f8e77af6a1bb436
- https://git.kernel.org/stable/c/be75218fadea22e59c8673db212f29c681bf45bb
- https://git.kernel.org/stable/c/c281e018af98df91827d65bec00f4956c00a1b02
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.