Read the docs
TI-2025-25924 Aliases CVE-2025-38587GHSA-3g8c-3p92-rjwr

ipv6: fix possible infinite loop in fib6_info_uses_dev()

Priority LOW 24CWE-835Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-835.

Summary

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6_info_uses_dev() fib6_info_uses_dev() seems to rely on RCU without an explicit protection. Like the prior fix in rt6_nlmsg_size(), we need to make sure fib6_del_route() or fib6_add_rt2node() have not removed the anchor from the list, or we risk an infinite loop.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00168 6th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.148, 6.6.102, 6.12.42 +4Red Hat: 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.1.128 to before 6.1.148; 6.6.75 to before 6.6.102; 6.12.2 to before 6.12.42; 6.11.11 to before 6.126.1.148, 6.6.102, 6.12.42, 6.12Patch availableCNA
LinuxLinux6.13 and later6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1, 6.17Patch availableCNA
  • Linux VendorLinux Affected 6.1.128 to before 6.1.148; 6.6.75 to before 6.6.102; 6.12.2 to before 6.12.42; 6.11.11 to before 6.12 Fixed in 6.1.148, 6.6.102, 6.12.42, 6.12 Patch available CNA
  • Linux VendorLinux Affected 6.13 and later Fixed in 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1, 6.17 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.1.128 to before 6.1.148; 6.6.75 to before 6.6.102; 6.11.11 to before 6.12; 6.12.2 to before 6.12.42; 6.13 to before 6.15.10; 6.16 to before 6.16.1VulnerableLinux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.1.128 to before 6.1.148; 6.6.75 to before 6.6.102; 6.11.11 to before 6.12; 6.12.2 to before 6.12.42; 6.13 to before 6.15.10; 6.16 to before 6.16.1 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.148, 6.6.102, 6.12.42, 6.12
  • Fix · CNA Linux (Linux) Fixed in 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1, 6.17

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 9AffectedNo fix yet: Fix deferred
Not affected: 2 products
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-38587
  2. 2026-10-03 Alias added: GHSA-3g8c-3p92-rjwr
  3. 2026-11-05 CISA SSVC decision points changed

References

Patch 6

Advisory 1

  • 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