CVE-2023-52927

7.8 HIGH
Published: March 14, 2025 Modified: December 31, 2025

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://git.kernel.org/stable/c/3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Broken Link
https://git.kernel.org/stable/c/4914109a8e1e494c6aa9852f9e84ec77a5fc643f
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Broken Link
https://seadragnol.github.io/posts/CVE-2023-52927/
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Exploit Technical Description
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Third Party Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.8 / 10.0
EPSS (Exploit Probability)
0.0%
12th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

debian linux