5.5

CVE-2021-47018

powerpc/64: Fix the definition of the fixmap area

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.37
Linux ≫ Linux Kernel Version >= 5.11 < 5.11.21
Linux ≫ Linux Kernel Version >= 5.12 < 5.12.4
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.24% 0.146
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd
Patch
https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c
Patch
https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8
Patch
https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f
Patch