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CVE-2022-48726

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Protect mc during concurrent multicast leaves Partially revert the commit mentioned in the Fixes line to make sure t…

Published Jun 20, 2024CWE-416EPSS 0.24%

Overview

CVE-2022-48726 is a high-severity vulnerability. It was published on June 20, 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:

RDMA/ucma: Protect mc during concurrent multicast leaves

Partially revert the commit mentioned in the Fixes line to make sure that

allocation and erasing multicast struct are locked.

BUG: KASAN: use-after-free in ucma_cleanup_multicast drivers/infiniband/core/ucma.c:491 [inline]

BUG: KASAN: use-after-free in ucma_destroy_private_ctx+0x914/0xb70 drivers/infiniband/core/ucma.c:579

Read of size 8 at addr ffff88801bb74b00 by task syz-executor.1/25529

CPU: 0 PID: 25529 Comm: syz-executor.1 Not tainted 5.16.0-rc7-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011

Call Trace:

__dump_stack lib/dump_stack.c:88 [inline]

dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106

print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:247

__kasan_report mm/kasan/report.c:433 [inline]

kasan_report.cold+0x83/0xdf mm/kasan/report.c:450

ucma_clean

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/2923948ffe0835f7114e948b35bcc42bc9b3baa1Refgit.kernel.org/stable/c/36e8169ec973359f671f9ec7213547059cae972eRefgit.kernel.org/stable/c/75c610212b9f1756b9384911d3a2c347eee8031cRefgit.kernel.org/stable/c/ee2477e8ccd3d978eeac0dc5a981b286d9bb7b0aRefgit.kernel.org/stable/c/2923948ffe0835f7114e948b35bcc42bc9b3baa1Refgit.kernel.org/stable/c/36e8169ec973359f671f9ec7213547059cae972eRefgit.kernel.org/stable/c/75c610212b9f1756b9384911d3a2c347eee8031cRefgit.kernel.org/stable/c/ee2477e8ccd3d978eeac0dc5a981b286d9bb7b0a

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48726?

CVE-2022-48726 is a high-severity vulnerability. It was published on June 20, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-48726?

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-2022-48726?

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-2022-48726?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48726 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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