vulnerability
Red Hat: CVE-2022-39188: unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:M/Au:S/C:N/I:N/A:C) | Sep 2, 2022 | May 15, 2023 | Mar 27, 2026 |
Severity
4
CVSS
(AV:L/AC:M/Au:S/C:N/I:N/A:C)
Published
Sep 2, 2022
Added
May 15, 2023
Modified
Mar 27, 2026
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.
Solutions
redhat-upgrade-kernelredhat-upgrade-kernel-rt
References
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