CVE-2023-52927

HIGH 2 PoCs
MEDIUM Priority: 0.02 BB Relevance: 51/100
Published: 2025-03-14 Modified: 2026-11-10 First seen: 2026-11-10 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (5)

VendorProductVersion
Linux Linux 1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e < 3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec
Linux Linux 1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e < 4914109a8e1e494c6aa9852f9e84ec77a5fc643f
Linux Linux 5.18
debian debian_linux 11.0
linux linux_kernel 5.18 – 6.1.130

Bug Bounty Relevance

51 / 100
✓ Low complexity
✓ No user interaction
✓ PoC available (2)

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.32%
Raw Score 0.003170
Percentile 25.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00317
2026-11-12
0.00317
2026-11-10
0.00317
2026-11-09
0.00317

Intelligence Sources

mitre ref →
nvd ref →