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CVE-2021-47018

UNKNOWN
Published 2024-02-28T08:13:33.362Z
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No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3 265c3491c4bc8d40587996d6ee2f447a7ccfb4f3
Linux

Linux

Affected Versions:

5.5 0 5.10.37 5.11.21 5.12.4 5.13

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-p768-cw2x-34vr

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-47018
WEB https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd
WEB https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c
WEB https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8
WEB https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f

Advisory provided by GitHub Security Advisory Database. Published: February 28, 2024, Modified: January 8, 2025

References

https://git.kernel.org/stable/c/4b9fb2c9039a206d37f215936a4d5bee7b1bf9cd
https://git.kernel.org/stable/c/abb07dc5e8b61ab7b1dde20dd73aa01a3aeb183f
https://git.kernel.org/stable/c/a84df7c80bdac598d6ac9268ae578da6928883e8
https://git.kernel.org/stable/c/9ccba66d4d2aff9a3909aa77d57ea8b7cc166f3c
Published: 2024-02-28T08:13:33.362Z
Last Modified: 2025-05-04T07:02:24.930Z
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