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CVE-2021-47018

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CVE-2021-47018

Published: Feb 28, 2024

Modified: May 11, 2026

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/64: Fix the definition of the fixmap area At the time being, the fixmap area is defined at the top of the address space or just below KASAN. This definition is not valid for PPC64. For PPC64, use the top of the I/O space. Because of circular dependencies, it is not possible to include asm/fixmap.h in asm/book3s/64/pgtable.h , so define a fixed size AREA at the top of the I/O space for fixmap and ensure during build that the size is big enough.

VendorProductVersions

Linux

Linux

affected
265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 - < 4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd
affected
265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 - < abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f
affected
265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 - < a84df7c80bdac598d6ac9268ae578da6928883e8
affected
265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 - < 9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c

Linux

Linux

affected
5.5
unaffected
0 - < 5.5
unaffected
5.10.37 - <= 5.10.*
unaffected
5.11.21 - <= 5.11.*
unaffected
5.12.4 - <= 5.12.*

+1 more versions

References

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