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CVE-2019-15031

Description

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.


Affected Package


OS OS Version Package Name Package Version
Debian 12 linux 6.1.4-1
Debian 11 linux 5.10.158-2
Debian 10 linux 4.19.249-2
Debian 999 linux 6.1.7-1

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