CVE-2023-5090: Kernel: kvm: svm: improper check in svm_set_x2apic_msr_interception allows direct access to host x2apic msrs
First published: Mon Nov 06 2023(Updated: )
A flaw was found in KVM. An improper check in svm_set_x2apic_msr_interception() may allow direct access to host x2apic msrs when the guest resets its apic, potentially leading to a denial of service condition.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.6 | 6.6 |
| Linux Linux kernel | <=6.5 | |
| Linux Linux kernel | =6.6-rc1 | |
| Linux Linux kernel | =6.6-rc2 | |
| Linux Linux kernel | =6.6-rc3 | |
| Linux Linux kernel | =6.6-rc4 | |
| Linux Linux kernel | =6.6-rc5 | |
| Linux Linux kernel | =6.6-rc6 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =9.0 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.6-1 6.12.9-1 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2248122
- https://access.redhat.com/security/cve/CVE-2023-5090
- https://access.redhat.com/errata/RHSA-2024:3854
- https://access.redhat.com/errata/RHSA-2024:3855
- https://launchpad.net/bugs/cve/CVE-2023-5090
- https://lore.kernel.org/kvm/20230928173354.217464-1-mlevitsk@redhat.com/T
- https://github.com/torvalds/linux/commit/b65235f6e102354ccafda601eaa1c5bef5284d21
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2248123
- https://access.redhat.com/errata/RHSA-2024:4211
- https://access.redhat.com/errata/RHSA-2024:4352
- https://access.redhat.com/errata/RHSA-2024:2758
- https://git.kernel.org/linus/b65235f6e102354ccafda601eaa1c5bef5284d21
- https://security-tracker.debian.org/tracker/CVE-2023-5090
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5090
- https://nvd.nist.gov/vuln/detail/CVE-2023-5090
- https://ubuntu.com/security/CVE-2023-5090
Frequently Asked Questions
What is CVE-2023-5090?
CVE-2023-5090 is a vulnerability in KVM that allows direct access to host x2apic msrs, potentially leading to a denial of service condition.
What is the severity of CVE-2023-5090?
The severity of CVE-2023-5090 is medium with a severity value of 6.
How does CVE-2023-5090 affect the kernel?
CVE-2023-5090 affects the kernel by allowing improper access to host x2apic msrs, which could lead to a denial of service.
How can I fix CVE-2023-5090?
To fix CVE-2023-5090, update the affected kernel to version 6.6 or higher.
Where can I find more information about CVE-2023-5090?
You can find more information about CVE-2023-5090 at the following references: [Reference 1](https://access.redhat.com/security/cve/CVE-2023-5090), [Reference 2](https://bugzilla.redhat.com/show_bug.cgi?id=2248122), [Reference 3](https://lore.kernel.org/kvm/20230928173354.217464-1-mlevitsk@redhat.com/T)
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