https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-02T13:34:55.935644+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2021-47018 CVE-2021-47018 — powerpc/64: Fix the definition of the fixmap area 2026-10-02T13:34:55.938514+00:00

Affected: Linux

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.