CVE-2023-52927

HIGH EPSS 21.1%
Published Mar 14, 20251y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Mar 14, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
21.1% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥5.18  –  <6.1.130
linuxlinux_kernel*≥6.2  –  <6.6
debiandebian_linux11.0any

References 5

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-082556.html
  • git.kernel.org https://git.kernel.org/stable/c/3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec
    Broken Link
  • git.kernel.org https://git.kernel.org/stable/c/4914109a8e1e494c6aa9852f9e84ec77a5fc643f
    Broken Link
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
    Issue TrackingThird Party Advisory
  • seadragnol.github.io https://seadragnol.github.io/posts/CVE-2023-52927/
    ExploitTechnical Description

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.