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.

INFO

Published Date :

2024-05-24T15:12:54.081Z

Last Modified :

2025-05-04T12:41:44.062Z

Source :

Linux
AFFECTED PRODUCTS

The following products are affected by CVE-2021-47567 vulnerability.

Vendors Products
Linux
  • Linux Kernel
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47567.

URL Resource
https://git.kernel.org/stable/c/5bb60ea611db1e04814426ed4bd1c95d1487678e cve-icon cve-icon
https://git.kernel.org/stable/c/c4e3ff8b8b1d54f0c755670174c453b06e17114b cve-icon cve-icon
https://git.kernel.org/stable/c/dfe906da9a1abebdebe8b15bb3e66a2578f6c4c7 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024052453-CVE-2021-47567-b955@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2021-47567 cve-icon
https://www.cve.org/CVERecord?id=CVE-2021-47567 cve-icon
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