CVE-2019-15030

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.

CVSS v3.1 NVD

4.4 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

CVSS v2.0 NVD

3.6 LOWAV:L/AC:L/Au:N/C:P/I:N/A:P

EPSS

0.45% chance of exploitation in the next 30 days, 38th percentile

Published

2019-09-13

Updated

2024-08-05

Proof-of-concept exploits (1)

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8205d5d98ef…

Security advisories

• 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/2019/09/10/3
• https://security.netapp.com/advisory/ntap-20191004-0001
• https://usn.ubuntu.com/4135-1
• https://usn.ubuntu.com/4135-2

References

• CVE Record
• NVD entry