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Start learningUpgrade RHEL:8
kernel-tools-libs-devel
to version 0:4.18.0-147.8.1.el8_1 or higher.
This issue was patched in RHSA-2020:1372
.
Note: Versions mentioned in the description apply only to the upstream kernel-tools-libs-devel
package and not the kernel-tools-libs-devel
package as distributed by RHEL
.
See How to fix?
for RHEL:8
relevant fixed versions and status.
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.