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CVE-2023-52922

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: can: bcm: Fix UAF in bcm_proc_show() BUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80 Read of size 8 at addr ffff88…

Published Nov 28, 2024CWE-416EPSS 0.30%

Overview

CVE-2023-52922 is a high-severity vulnerability. It was published on November 28, 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:

can: bcm: Fix UAF in bcm_proc_show()

BUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80

Read of size 8 at addr ffff888155846230 by task cat/7862

CPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014

Call Trace:

<TASK>

dump_stack_lvl+0xd5/0x150

print_report+0xc1/0x5e0

kasan_report+0xba/0xf0

bcm_proc_show+0x969/0xa80

seq_read_iter+0x4f6/0x1260

seq_read+0x165/0x210

proc_reg_read+0x227/0x300

vfs_read+0x1d5/0x8d0

ksys_read+0x11e/0x240

do_syscall_64+0x35/0xb0

entry_SYSCALL_64_after_hwframe+0x63/0xcd

Allocated by task 7846:

kasan_save_stack+0x1e/0x40

kasan_set_track+0x21/0x30

__kasan_kmalloc+0x9e/0xa0

bcm_sendmsg+0x264b/0x44e0

sock_sendmsg+0xda/0x180

____sys_sendmsg+0x735/0x920

___sys_sendmsg+0x11d/0x1b0

__sys_sendmsg+0xfa/0x1d0

do_syscall_64+0x35/0xb0

entry_SYSCALL_64_after_hwframe+0x63/0xcd

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/11b8e27ed448baa385d90154a141466bd5e92f18Refgit.kernel.org/stable/c/3c3941bb1eb53abe7d640ffee5c4d6b559829ab3Refgit.kernel.org/stable/c/55c3b96074f3f9b0aee19bf93cd71af7516582bbRefgit.kernel.org/stable/c/9533dbfac0ff7edd77a5fa2c24974b1d66c8b0a6Refgit.kernel.org/stable/c/995f47d76647708ec26c6e388663ad4f3f264787Refgit.kernel.org/stable/c/9b58d36d0c1ea29a9571e0222a9c29df0ccfb7ffRefgit.kernel.org/stable/c/cf254b4f68e480e73dab055014e002b77aed30edRefgit.kernel.org/stable/c/dfd0aa26e9a07f2ce546ccf8304ead6a2914e8a7Refallelesecurity.com/use-after-free-vulnerability-in-can-bcm-subsystem-leading-to-information-disclosure-cve-2023-52922/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52922?

CVE-2023-52922 is a high-severity vulnerability. It was published on November 28, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-52922?

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-2023-52922?

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-2023-52922?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52922 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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