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CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-47018

powerpc/64: Fix the definition of the fixmap area

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 to < 4b9fb2c9039a206d37f215936a4d5bee7b1bf9cdaffected
  • 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 to < abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183faffected
  • 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 to < a84df7c80bdac598d6ac9268ae578da6928883e8affected
  • 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 to < 9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3caffected

Linux Linux

Default version status: affected

  • 5.5affected
  • 0 to < 5.5unaffected
  • 5.10.37 to ≤ 5.10.*unaffected
  • 5.11.21 to ≤ 5.11.*unaffected
  • 5.12.4 to ≤ 5.12.*unaffected
  • 5.13 to ≤ *unaffected

References