Red Hat: CVE-2022-39188: unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry (Multiple Advisories)
4
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
09/02/2022
05/15/2023
05/15/2023
03/13/2024
Description
An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs.
Solution(s)
- redhat-upgrade-kernel
- redhat-upgrade-kernel-rt
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