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Incorrect Authorization The advisory has been revoked - it doesn't affect any version of package kselftests-kmp-default  (opens in a new tab)

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.51% (43rd percentile)

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  • Snyk IDSNYK-SLES150-KSELFTESTSKMPDEFAULT-2756897
  • published14 Apr 2022
  • disclosed1 Feb 2019
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Introduced: 1 Feb 2019

CVE-2018-18397  (opens in a new tab)
CWE-863  (opens in a new tab)

Amendment

The SLES security team deemed this advisory irrelevant for SLES:15.0.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kselftests-kmp-default package and not the kselftests-kmp-default package as distributed by SLES.

The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c.

References