CVE-2021-47567 | BDVDB-2026-237451 Detail

Description#

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.

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History#

1. Version 12024-05-24Record published in the CVE List.
2. Version 22026-05-23Most recent update recorded in the CVE List.