CVE-2025-37997
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: fix region locking in hash types Region locking introduced in v5.6-rc4 contained three macros to handle the region locks: ahash_bucket_start(), ahash_bucket_end()…
Does this matter?
Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: fix region locking in hash types Region locking introduced in v5.6-rc4 contained three macros to handle the region locks: ahash_bucket_start(), ahash_bucket_end() which gave back the start and end hash bucket values belonging to a given region lock and ahash_region() which should give back the region lock belonging to a given hash bucket. The latter was incorrect which can lead to a race condition between the garbage collector and adding new elements when a hash type of set is defined with timeouts.
- 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
- 0.18% probability · 8th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://git.kernel.org/stable/c/00cfc5fad1491796942a948808afb968a0a3f35bPatch
- https://git.kernel.org/stable/c/226ce0ec38316d9e3739e73a64b6b8304646c658Patch
- https://git.kernel.org/stable/c/6e002ecc1c8cfdfc866b9104ab7888da54613e59Patch
- https://git.kernel.org/stable/c/82c1eb32693bc48251d92532975e19160987e5b9Patch
- https://git.kernel.org/stable/c/8478a729c0462273188263136880480729e9efcaPatch
- https://git.kernel.org/stable/c/a3dfec485401943e315c394c29afe2db8f9481d6Patch
- https://git.kernel.org/stable/c/aa77294b0f73bb8265987591460cd25b8722c3dfPatch
- https://git.kernel.org/stable/c/e2ab67672b2288521a6146034a971f9a82ffc5c5Patch
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.