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CVE-2023-52772

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: af_unix: fix use-after-free in unix_stream_read_actor() syzbot reported the following crash [1] After releasing unix socket lo…

Published May 21, 2024CWE-416EPSS 0.24%

Overview

CVE-2023-52772 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:

af_unix: fix use-after-free in unix_stream_read_actor()

syzbot reported the following crash [1]

After releasing unix socket lock, u->oob_skb can be changed

by another thread. We must temporarily increase skb refcount

to make sure this other thread will not free the skb under us.

[1]

BUG: KASAN: slab-use-after-free in unix_stream_read_actor+0xa7/0xc0 net/unix/af_unix.c:2866

Read of size 4 at addr ffff88801f3b9cc4 by task syz-executor107/5297

CPU: 1 PID: 5297 Comm: syz-executor107 Not tainted 6.6.0-syzkaller-15910-gb8e3a87a627b #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023

Call Trace:

<TASK>

__dump_stack lib/dump_stack.c:88 [inline]

dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106

print_address_description mm/kasan/report.c:364 [inline]

print_report+0xc4/0x620 mm/kasan/report.c:475

kasan_report+0xda/0x110 mm/kasan/report.c:588

unix_stream_read_actor+0xa7/0xc0 net/unix/af

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/069a3ec329ff43e7869a3d94c62cd03203016bceRefgit.kernel.org/stable/c/4b7b492615cf3017190f55444f7016812b66611dRefgit.kernel.org/stable/c/75bcfc188abf4fae9c1d5f5dc0a03540be602eefRefgit.kernel.org/stable/c/d179189eec426fe4801e4b91efa1889faed12700Refgit.kernel.org/stable/c/eae0b295ce16d8c8b4114c3037993191b4bb92f0Refgit.kernel.org/stable/c/069a3ec329ff43e7869a3d94c62cd03203016bceRefgit.kernel.org/stable/c/4b7b492615cf3017190f55444f7016812b66611dRefgit.kernel.org/stable/c/75bcfc188abf4fae9c1d5f5dc0a03540be602eefRefgit.kernel.org/stable/c/d179189eec426fe4801e4b91efa1889faed12700Refgit.kernel.org/stable/c/eae0b295ce16d8c8b4114c3037993191b4bb92f0

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52772?

CVE-2023-52772 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-2023-52772?

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-2023-52772?

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-2023-52772?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52772 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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