Description
An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Kernel Linux Kernel
Default version status: unaffected
add6a0cd1c5ba51b201e1361b05a5df817083618 to < f8be156be163a052a067306417cd0ff679068c97affected
References
- https://github.com/google/security-research/security/advisories/GHSA-7wq5-phmq-m584 ↗
- http://www.openwall.com/lists/oss-security/2021/06/26/1 ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4G5YBUVEPHZYXMKNGBZ3S6INFCTEEL4E/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ROQIXQB7ZAWI3KSGSHR6H5RDUWZI775S/ ↗
- https://security.netapp.com/advisory/ntap-20210708-0002/ ↗
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html ↗
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html ↗