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TI-2025-25342 Aliases CVE-2025-37997GHSA-jgxp-fpw7-p364

netfilter: ipset: fix region locking in hash types

Priority LOW 35CWE-667Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 5 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-667 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00181 7th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.4.294, 5.6, 5.10.238 +6Red Hat: 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.4.24 to before 5.4.294; 5.5.8 to before 5.65.4.294, 5.6Patch availableCNA
LinuxLinux5.6 and later5.4.294, 5.10.238, 5.15.183, 6.1.139, 6.6.91, 6.12.29, 6.14.7, 6.15Patch availableCNA
  • Linux VendorLinux Affected 5.4.24 to before 5.4.294; 5.5.8 to before 5.6 Fixed in 5.4.294, 5.6 Patch available CNA
  • Linux VendorLinux Affected 5.6 and later Fixed in 5.4.294, 5.10.238, 5.15.183, 6.1.139, 6.6.91, 6.12.29, 6.14.7, 6.15 Patch available CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.4.24 to before 5.4.294; 5.5.8 to before 5.6; 5.6.1 to before 5.10.238; 5.11 to before 5.15.183; 5.16 to before 6.1.139; 6.2 to before 6.6.91; 6.7 to before 6.12.29; 6.13 to before 6.14.7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.6:-:*:*:*:*:*:*5.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.6:rc4:*:*:*:*:*:*5.6 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.6:rc5:*:*:*:*:*:*5.6 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.6:rc6:*:*:*:*:*:*5.6 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.6:rc7:*:*:*:*:*:*5.6 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*6.15 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*6.15 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*6.15 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*6.15 rc4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.4.24 to before 5.4.294; 5.5.8 to before 5.6; 5.6.1 to before 5.10.238; 5.11 to before 5.15.183; 5.16 to before 6.1.139; 6.2 to before 6.6.91; 6.7 to before 6.12.29; 6.13 to before 6.14.7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.6:-:*:*:*:*:*:* Versions 5.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.6:rc4:*:*:*:*:*:* Versions 5.6 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.6:rc5:*:*:*:*:*:* Versions 5.6 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.6:rc6:*:*:*:*:*:* Versions 5.6 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.6:rc7:*:*:*:*:*:* Versions 5.6 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* Versions 6.15 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* Versions 6.15 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* Versions 6.15 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* Versions 6.15 rc4 Vulnerable ·Linux
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*6.15 rc5VulnerableLinux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:* Versions 6.15 rc5 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.4.294, 5.6
  • Fix · CNA Linux (Linux) Fixed in 5.4.294, 5.10.238, 5.15.183, 6.1.139, 6.6.91, 6.12.29, 6.14.7, 6.15

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-37997
  2. 2026-10-03 Alias added: GHSA-jgxp-fpw7-p364
  3. 2026-10-16 CISA SSVC decision points changed

References

Patch 8

Advisory 2

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences