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TI-2022-25067 Aliases CVE-2022-49558GHSA-r85c-395r-g559

netfilter: nf_tables: double hook unregistration in netns path

Priority LOW 25Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: double hook unregistration in netns path __nft_release_hooks() is called from pre_netns exit path which unregisters the hooks, then the NETDEV_UNREGISTER event is triggered which unregisters the hooks again. [ 565.221461] WARNING: CPU: 18 PID: 193 at net/netfilter/core.c:495 __nf_unregister_net_hook+0x247/0x270 [...] [ 565.246890] CPU: 18 PID: 193 Comm: kworker/u64:1 Tainted: G E 5.18.0-rc7+ #27 [ 565.253682] Workqueue: netns cleanup_net [ 565.257059] RIP: 0010:__nf_unregister_net_hook+0x247/0x270 [...] [ 565.297120] Call Trace: [ 565.300900] <TASK> [ 565.304683] nf_tables_flowtable_event+0x16a/0x220 [nf_tables] [ 565.308518] raw_notifier_call_chain+0x63/0x80 [ 565.312386] unregister_netdevice_many+0x54f/0xb50 Unregister and destroy netdev hook from netns pre_exit via kfree_rcu so the NETDEV_UNREGISTER path see unregistered hooks.

Why it matters now

EPSS 0.00282 20th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.4.262, 5.10.198, 5.15.45 +3Red Hat: 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.4.99 to before 5.4.262; 5.10.17 to before 5.10.1985.4.262, 5.10.198Patch availableCNA
LinuxLinux5.11 and later5.4.262, 5.10.198, 5.15.45, 5.17.13, 5.18.2, 5.19Patch availableCNA
  • Linux VendorLinux Affected 5.4.99 to before 5.4.262; 5.10.17 to before 5.10.198 Fixed in 5.4.262, 5.10.198 Patch available CNA
  • Linux VendorLinux Affected 5.11 and later Fixed in 5.4.262, 5.10.198, 5.15.45, 5.17.13, 5.18.2, 5.19 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.4.99 to before 5.4.262; 5.10.17 to before 5.10.198; 5.11.1 to before 5.15.45; 5.16 to before 5.17.13; 5.18 to before 5.18.2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.11:-:*:*:*:*:*:*5.11VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.4.99 to before 5.4.262; 5.10.17 to before 5.10.198; 5.11.1 to before 5.15.45; 5.16 to before 5.17.13; 5.18 to before 5.18.2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.11:-:*:*:*:*:*:* Versions 5.11 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.4.262, 5.10.198
  • Fix · CNA Linux (Linux) Fixed in 5.4.262, 5.10.198, 5.15.45, 5.17.13, 5.18.2, 5.19

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix planned: Out of support scope
Not affected: 3 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-49558
  2. 2026-10-03 Alias added: GHSA-r85c-395r-g559

References

Patch 6

  • 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