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CVE-2022-49788

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram() `struct vmci_event_qp` allocated by qp_notify_peer() contains…

Published May 1, 2025CWE-908EPSS 0.23%

Overview

CVE-2022-49788 is a medium-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram()

`struct vmci_event_qp` allocated by qp_notify_peer() contains padding,

which may carry uninitialized data to the userspace, as observed by

KMSAN:

BUG: KMSAN: kernel-infoleak in instrument_copy_to_user ./include/linux/instrumented.h:121

instrument_copy_to_user ./include/linux/instrumented.h:121

_copy_to_user+0x5f/0xb0 lib/usercopy.c:33

copy_to_user ./include/linux/uaccess.h:169

vmci_host_do_receive_datagram drivers/misc/vmw_vmci/vmci_host.c:431

vmci_host_unlocked_ioctl+0x33d/0x43d0 drivers/misc/vmw_vmci/vmci_host.c:925

vfs_ioctl fs/ioctl.c:51

...

Uninit was stored to memory at:

kmemdup+0x74/0xb0 mm/util.c:131

dg_dispatch_as_host drivers/misc/vmw_vmci/vmci_datagram.c:271

vmci_datagram_dispatch+0x4f8/0xfc0 drivers/misc/vmw_vmci/vmci_datagram.c:339

qp_notify_peer+0x19a/0x290 drivers/misc/vmw_vmci/vmci_queue_pair.c:1479

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/5a275528025ae4bc7e2232866856dfebf84b2fadRefgit.kernel.org/stable/c/62634b43d3c4e1bf62fd540196f7081bf0885c0aRefgit.kernel.org/stable/c/76c50d77b928a33e5290aaa9fdc10e88254ff8c7Refgit.kernel.org/stable/c/7ccf7229b96fadc3a185d1391f814a604c7ef609Refgit.kernel.org/stable/c/8e2f33c598370bcf828bab4d667d1d38bcd3c57dRefgit.kernel.org/stable/c/e5b0d06d9b10f5f43101bd6598b076c347f9295fRefgit.kernel.org/stable/c/e7061dd1fef2dfb6458cd521aef27aa66f510d31Refgit.kernel.org/stable/c/f04586c2315cfd03d72ad0395705435e7ed07b1a

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49788?

CVE-2022-49788 is a medium-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49788?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49788?

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-2022-49788?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49788 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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