TI-2022-24695 Aliases CVE-2022-49183 GHSA-h8cc-85qr-g7ff

net/sched: act_ct: fix ref leak when switching zones

LOW 24Published 2025-02-26 · Updated 2026-06-01

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: 1 without a fix

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

Summary

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: fix ref leak when switching zones When switching zones or network namespaces without doing a ct clear in between, it is now leaking a reference to the old ct entry. That's because tcf_ct_skb_nfct_cached() returns false and tcf_ct_flow_table_lookup() may simply overwrite it. The fix is to, as the ct entry is not reusable, free it already at tcf_ct_skb_nfct_cached().

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00271 19th percentileScored 2026-11-07

Fix Partial Linux (Linux): 5.10.258, 5.15.33, 5.16.19 +2Red Hat: 1 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	5.10.103 to before 5.10.258; 5.15.26 to before 5.15.33; 5.16.12 to before 5.16.19	5.10.258, 5.15.33, 5.16.19	Patch available	CNA
Linux	Linux	5.17 and later	5.10.258, 5.15.33, 5.16.19, 5.17.2, 5.18	Patch available	CNA

Linux VendorLinux Affected 5.10.103 to before 5.10.258; 5.15.26 to before 5.15.33; 5.16.12 to before 5.16.19 Fixed in 5.10.258, 5.15.33, 5.16.19 Patch available CNA
Linux VendorLinux Affected 5.17 and later Fixed in 5.10.258, 5.15.33, 5.16.19, 5.17.2, 5.18 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	5.10.103 to before 5.11; 5.15.26 to before 5.15.33; 5.16.12 – 5.16.19; 5.17 – 5.17.2	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.10.103 to before 5.11; 5.15.26 to before 5.15.33; 5.16.12 – 5.16.19; 5.17 – 5.17.2 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 5.10.258, 5.15.33, 5.16.19
Fix · CNA Linux (Linux) Fixed in 5.10.258, 5.15.33, 5.16.19, 5.17.2, 5.18

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 8	Affected	No fix planned: Out of support scope

Not affected: 4 products

Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2022-49183
2026-10-03 Alias added: GHSA-h8cc-85qr-g7ff

References

Patch 4

Other 1

https://git.kernel.org/stable/c/9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8

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