HIGH 7.8 Microsoft
CVE-2022-1158
A flaw was found in KVM. When updating a guest's page table entry vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel resulting in a denial of service condition.
Microsoft Security Update 2022-Aug: A flaw was found in KVM. When updating a guest's page table entry vm_pgoff was improperly used as the offset to get the page's pfn. As vaddr and vm_pgoff are controllable by user-mode processes this flaw allows unprivileged local users on the host to write outside the userspace region and potentially corrupt the kernel resulting in a denial of service condition.
Affected Products
- cm1 kernel 5.10.134.1-2 on CBL Mariner 1.0
- cbl2 kernel 5.15.67.1-4 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-1158
- https://nvd.nist.gov/vuln/detail/CVE-2022-1158
This high severity vulnerability with a CVSS score of 7.8 was published on 2022-08-09 via Microsoft. Affected: cm1 kernel 5.10.134.1-2 on CBL Mariner 1.0, cbl2 kernel 5.15.67.1-4 on CBL Mariner 2.0.
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