What’s Vulnerable › Vulnerabilities

CVE-2019-15031

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-09-13 · updated 2026-06-17
• Weakness: CWE-662

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 products

• Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 18.04, 19.04
• Linux kernel: through 5.2.14
• openSUSE Leap: 15.0, 15.1
• Red Hat Enterprise Linux: 7.0, 8.0

References

• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
• http://www.openwall.com/lists/oss-security/2019/09/10/4
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a8318c13e79badb92bc6640704a64cc022a6eb97
• https://security.netapp.com/advisory/ntap-20191004-0001/
• https://usn.ubuntu.com/4135-1/
• https://usn.ubuntu.com/4135-2/
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
• http://www.openwall.com/lists/oss-security/2019/09/10/4
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a8318c13e79badb92bc6640704a64cc022a6eb97
• https://security.netapp.com/advisory/ntap-20191004-0001/

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