TI-2023-29247 Aliases CVE-2023-52927 GHSA-6952-99fq-g3mw

netfilter: allow exp not to be removed in nf_ct_find_expectation

LOW 34CWE-416Published 2025-03-14 · Updated 2026-10-15

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: 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: allow exp not to be removed in nf_ct_find_expectation Currently nf_conntrack_in() calling nf_ct_find_expectation() will remove the exp from the hash table. However, in some scenario, we expect the exp not to be removed when the created ct will not be confirmed, like in OVS and TC conntrack in the following patches. This patch allows exp not to be removed by setting IPS_CONFIRMED in the status of the tmpl.

Why it matters now

EPSS 0.00317 24th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial Linux (Linux): 6.1.130, 6.6Red Hat: 3 without a fix

SSVC decision points

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	5.18 and later	6.1.130, 6.6	Patch available	CNA

Linux VendorLinux Affected 5.18 and later Fixed in 6.1.130, 6.6 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	5.18 to before 6.1.130; 6.2 to before 6.6	Vulnerable	Linux
cpe:2.3:o:debian:debian_linux:11.0:::::::*	11.0	Vulnerable	Debian

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.18 to before 6.1.130; 6.2 to before 6.6 Vulnerable ·Linux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

Fix · CNA Linux (Linux) Fixed in 6.1.130, 6.6

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 8	Affected	No fix planned: Out of support scope

Not affected: 2 products

Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2023-52927
2026-10-03 Alias added: GHSA-6952-99fq-g3mw

References

Exploit 1

https://seadragnol.github.io/posts/CVE-2023-52927/

Advisory 1

https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Other 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