CVE-2026-52921
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…
Does this matter?
Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.11% probability · 2th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/02f75f041a93ea045834da89cd3234f4c1d749b4Patch
- https://git.kernel.org/stable/c/0b530efb2cc9dbdddfd49d392e3a857f0d4ce8dcPatch
- https://git.kernel.org/stable/c/0d3a282ab5f165fc207ff49ea5b6ad8f54616bd6Patch
- https://git.kernel.org/stable/c/0d7b33ace701fe397e6e4de145f32e098178d901Patch
- https://git.kernel.org/stable/c/383418c20e69f5761b6ec5238f599423f4fb77fbPatch
- https://git.kernel.org/stable/c/952e988163c2ab9939c3db9f0f8e77af6a1bb436Patch
- https://git.kernel.org/stable/c/be75218fadea22e59c8673db212f29c681bf45bbPatch
- https://git.kernel.org/stable/c/c281e018af98df91827d65bec00f4956c00a1b02Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.