CVE-2021-47567 (GCVE-0-2021-47567)
Vulnerability from cvelistv5
Published
2024-05-24 15:12
Modified
2025-05-04 12:41
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/32: Fix hardlockup on vmap stack overflow Since the commit c118c7303ad5 ("powerpc/32: Fix vmap stack - Do not activate MMU before reading task struct") a vmap stack overflow results in a hard lockup. This is because emergency_ctx is still addressed with its virtual address allthough data MMU is not active anymore at that time. Fix it by using a physical address instead.
References
Impacted products
Vendor Product Version
Linux Linux Version: c118c7303ad528be8ff2aea8cd1ee15452c763f0
Version: c118c7303ad528be8ff2aea8cd1ee15452c763f0
Version: c118c7303ad528be8ff2aea8cd1ee15452c763f0
Version: 3b234b4a6651ed6bdca94553aa0038fc7ded9271
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