Information Exposure Affecting torvalds/linux package, versions [,5.2.15)


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3005963
  • published26 Jan 2022
  • disclosed13 Sept 2019
  • creditUnknown

Introduced: 13 Sep 2019

CVE-2019-15031  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.2.15 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure. In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via an interrupt. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process, because MSR_TM_ACTIVE is misused in arch/powerpc/kernel/process.c.

References

CVSS Base Scores

version 3.1