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CVE-2023-52745

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: IB/IPoIB: Fix legacy IPoIB due to wrong number of queues The cited commit creates child PKEY interfaces over netlink will multi…

Published May 21, 2024CWE-476EPSS 0.26%

Overview

CVE-2023-52745 is a high-severity vulnerability. It was published on May 21, 2024 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:

IB/IPoIB: Fix legacy IPoIB due to wrong number of queues

The cited commit creates child PKEY interfaces over netlink will

multiple tx and rx queues, but some devices doesn't support more than 1

tx and 1 rx queues. This causes to a crash when traffic is sent over the

PKEY interface due to the parent having a single queue but the child

having multiple queues.

This patch fixes the number of queues to 1 for legacy IPoIB at the

earliest possible point in time.

BUG: kernel NULL pointer dereference, address: 000000000000036b

PGD 0 P4D 0

Oops: 0000 [#1] SMP

CPU: 4 PID: 209665 Comm: python3 Not tainted 6.1.0_for_upstream_min_debug_2022_12_12_17_02 #1

Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014

RIP: 0010:kmem_cache_alloc+0xcb/0x450

Code: ce 7e 49 8b 50 08 49 83 78 10 00 4d 8b 28 0f 84 cb 02 00 00 4d 85 ed 0f 84 c2 02 00 00 41 8b 44 24 28 48 8d 4a

01 49 8b 3

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/1b4ef90cbcfa603b3bb536fbd6f261197012b6f6Refgit.kernel.org/stable/c/4a779187db39b2f32d048a752573e56e4e77807fRefgit.kernel.org/stable/c/7197460dcd43ff0e4a502ba855dd82d37c2848ccRefgit.kernel.org/stable/c/b1afb666c32931667c15ad1b58e7203f0119dcafRefgit.kernel.org/stable/c/e632291a2dbce45a24cddeb5fe28fe71d724ba43Refgit.kernel.org/stable/c/1b4ef90cbcfa603b3bb536fbd6f261197012b6f6Refgit.kernel.org/stable/c/4a779187db39b2f32d048a752573e56e4e77807fRefgit.kernel.org/stable/c/7197460dcd43ff0e4a502ba855dd82d37c2848ccRefgit.kernel.org/stable/c/b1afb666c32931667c15ad1b58e7203f0119dcafRefgit.kernel.org/stable/c/e632291a2dbce45a24cddeb5fe28fe71d724ba43

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52745?

CVE-2023-52745 is a high-severity vulnerability. It was published on May 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-52745?

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-2023-52745?

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-2023-52745?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52745 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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