Linux Kernel up to 5.15.34/5.17.3 sysctl_record_panic_msg information disclosure

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.15.34/5.17.3. It has been classified as problematic. Affected is the function sysctl_record_panic_msg. Performing a manipulation results in information disclosure. This vulnerability is identified as CVE-2022-49054. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 5.15.34/5.17.3. This affects the function sysctl_record_panic_msg. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Deactivate sysctl_record_panic_msg by default in isolated guests hv_panic_page might contain guest-sensitive information, do not dump it over to Hyper-V by default in isolated guests. While at it, update some comments in hyperv_{panic,die}_event().

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-49054 since 02/26/2025. The exploitability is told to be easy. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 5.15.35 or 5.17.4 eliminates this vulnerability. Applying the patch 1b576e81d31b56b248316b8ff816b1cc5c4407c7/6230bc50d6d21cae4c084766623d0a6d17958721/9f8b577f7b43b2170628d6c537252785dcc2dcea is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.15.22
• 5.15.23
• 5.15.24
• 5.15.25
• 5.15.26
• 5.15.27
• 5.15.28
• 5.15.29
• 5.15.30
• 5.15.31
• 5.15.32
• 5.15.33
• 5.15.34
• 5.17.0
• 5.17.1
• 5.17.2
• 5.17.3

License

• open-source

Website

• Vendor: https://www.kernel.org/

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