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CVE-2023-52999

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: fix UaF in netns ops registration error path If net_assign_generic() fails, the current error path in ops_init() tries to…

Published Mar 27, 2025CWE-416EPSS 0.24%

Overview

CVE-2023-52999 is a high-severity vulnerability. It was published on March 27, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

net: fix UaF in netns ops registration error path

If net_assign_generic() fails, the current error path in ops_init() tries

to clear the gen pointer slot. Anyway, in such error path, the gen pointer

itself has not been modified yet, and the existing and accessed one is

smaller than the accessed index, causing an out-of-bounds error:

BUG: KASAN: slab-out-of-bounds in ops_init+0x2de/0x320

Write of size 8 at addr ffff888109124978 by task modprobe/1018

CPU: 2 PID: 1018 Comm: modprobe Not tainted 6.2.0-rc2.mptcp_ae5ac65fbed5+ #1641

Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.1-2.fc37 04/01/2014

Call Trace:

<TASK>

dump_stack_lvl+0x6a/0x9f

print_address_description.constprop.0+0x86/0x2b5

print_report+0x11b/0x1fb

kasan_report+0x87/0xc0

ops_init+0x2de/0x320

register_pernet_operations+0x2e4/0x750

register_pernet_subsys+0x24/0x40

tcf_register_action+0x9f/0x560

do_one_initcall+0xf9/0x

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/12075708f2e77ee6a9f8bb2cf512c38be3099794Refgit.kernel.org/stable/c/66689a72ba73575e76d4f6a8748d3fa2690ec1c4Refgit.kernel.org/stable/c/71ab9c3e2253619136c31c89dbb2c69305cc89b1Refgit.kernel.org/stable/c/ad0dfe9bcf0d78e699c7efb64c90ed062dc48beaRefgit.kernel.org/stable/c/d4c008f3b7f7d4ffd311eb2dae5e75b3cbddacd0Refgit.kernel.org/stable/c/ddd49cbbd4c1ceb38032018b589b44208e54f55e

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52999?

CVE-2023-52999 is a high-severity vulnerability. It was published on March 27, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-52999?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-52999?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-52999?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52999 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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