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CVE-2022-49992

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mm/mprotect: only reference swap pfn page if type match Yu Zhao reported a bug after the commit "mm/swap: Add swp_offset_pfn()…

Published Jun 18, 2025EPSS 0.20%

Overview

CVE-2022-49992 is a medium-severity vulnerability. It was published on June 18, 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:

mm/mprotect: only reference swap pfn page if type match

Yu Zhao reported a bug after the commit "mm/swap: Add swp_offset_pfn() to

fetch PFN from swap entry" added a check in swp_offset_pfn() for swap type [1]:

kernel BUG at include/linux/swapops.h:117!

CPU: 46 PID: 5245 Comm: EventManager_De Tainted: G S O L 6.0.0-dbg-DEV #2

RIP: 0010:pfn_swap_entry_to_page+0x72/0xf0

Code: c6 48 8b 36 48 83 fe ff 74 53 48 01 d1 48 83 c1 08 48 8b 09 f6

c1 01 75 7b 66 90 48 89 c1 48 8b 09 f6 c1 01 74 74 5d c3 eb 9e <0f> 0b

48 ba ff ff ff ff 03 00 00 00 eb ae a9 ff 0f 00 00 75 13 48

RSP: 0018:ffffa59e73fabb80 EFLAGS: 00010282

RAX: 00000000ffffffe8 RBX: 0c00000000000000 RCX: ffffcd5440000000

RDX: 1ffffffffff7a80a RSI: 0000000000000000 RDI: 0c0000000000042b

RBP: ffffa59e73fabb80 R08: ffff9965ca6e8bb8 R09: 0000000000000000

R10: ffffffffa5a2f62d R11: 0000030b372e9fff R12: ffff997b79db5738

R13: 00000000000004

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/3d2f78f08cd8388035ac375e731ec1ac1b79b09dRefgit.kernel.org/stable/c/5fcf81e308d1f4ae95f31690d2a80b7061385ff9

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49992?

CVE-2022-49992 is a medium-severity vulnerability. It was published on June 18, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49992?

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-2022-49992?

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-2022-49992?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49992 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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