medium4.4
CVE-2019-15031
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.
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | through 5.2.14 |
| Canonical | Ubuntu Linux | Versions 12.04, 14.04, 16.04, 18.04, 19.04 |
| Opensuse | Leap | Versions 15.0, 15.1 |
| Redhat | Enterprise Linux | Versions 7.0, 8.0 |
Weakness classification
References
- NVD record
- CVE.org record
- 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/
- https://usn.ubuntu.com/4135-1/
- https://usn.ubuntu.com/4135-2/