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Exposure of System Data to an Unauthorized Control Sphere The advisory has been revoked - it doesn't affect any version of package kernel-cross-headers  (opens in a new tab)

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EPSS
0.45% (36th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELCROSSHEADERS-3662385
  • published26 Jul 2021
  • disclosed6 Sept 2019
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Introduced: 6 Sep 2019

CVE-2019-15030  (opens in a new tab)
CWE-497  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-cross-headers package and not the kernel-cross-headers package as distributed by RHEL.

In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via a Facility Unavailable exception. 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 of a missing arch/powerpc/kernel/process.c check.