Linux Kernel up to 4.19.198/5.4.135/5.10.53/5.13.5 PPC kvm_arch_vcpu_ioctl denial of service

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.19.198/5.4.135/5.10.53/5.13.5 and classified as critical. Impacted is the function kvm_arch_vcpu_ioctl of the component PPC. Executing a manipulation can lead to denial of service. This vulnerability is tracked as CVE-2021-47296. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 4.19.198/5.4.135/5.10.53/5.13.5. This vulnerability affects the function kvm_arch_vcpu_ioctl of the component PPC. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak vcpu_put is not called if the user copy fails. This can result in preempt notifier corruption and crashes, among other issues.

The advisory is available at git.kernel.org. This vulnerability was named CVE-2021-47296 since 05/21/2024. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 210654 (EulerOS 2.0 SP9 : kernel (EulerOS-SA-2024-2832)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.199, 5.4.136, 5.10.54 or 5.13.6 eliminates this vulnerability. Applying the patch 9bafc34dc4ad/f38527f18905/e14ef1095387/a4a488915fea/bc4188a2f56e 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.

The vulnerability is also documented in the vulnerability database at Tenable (210654). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.19.198
• 5.4.135
• 5.10.0
• 5.10.1
• 5.10.2
• 5.10.3
• 5.10.4
• 5.10.5
• 5.10.6
• 5.10.7
• 5.10.8
• 5.10.9
• 5.10.10
• 5.10.11
• 5.10.12
• 5.10.13
• 5.10.14
• 5.10.15
• 5.10.16
• 5.10.17
• 5.10.18
• 5.10.19
• 5.10.20
• 5.10.21
• 5.10.22
• 5.10.23
• 5.10.24
• 5.10.25
• 5.10.26
• 5.10.27
• 5.10.28
• 5.10.29
• 5.10.30
• 5.10.31
• 5.10.32
• 5.10.33
• 5.10.34
• 5.10.35
• 5.10.36
• 5.10.37
• 5.10.38
• 5.10.39
• 5.10.40
• 5.10.41
• 5.10.42
• 5.10.43
• 5.10.44
• 5.10.45
• 5.10.46
• 5.10.47
• 5.10.48
• 5.10.49
• 5.10.50
• 5.10.51
• 5.10.52
• 5.10.53
• 5.13.0
• 5.13.1
• 5.13.2
• 5.13.3
• 5.13.4
• 5.13.5

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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