HighFix available
netfilter: ipset: fix region locking in hash types
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.238, 5.15.183, 5.4.294, 6.1.139, 6.12.29, 6.14.7, 6.6.91
- CVEs
- CVE-2025-37997
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 18:44 UTC · Revision 1
Source evidence
netfilter: ipset: fix region locking in hash types
core-osv · Original sourcePublished 29 May 2025, 13:15 UTC
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.
osv:CVE-2025-37997
Kernel
Fixed versions: 5.4.294, 5.10.238, 5.15.183, 6.1.139, 6.6.91, 6.12.29, 6.14.7
Complete source record
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"modified": "2026-10-28T02:30:51.539839360Z",
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