CVE-2019-15031
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.
Does this matter?
Lower severity and a low EPSS score (0.56%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.4 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
- EPSS
- 0.56% probability · 45th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-662
- Affected
- linux/linux kernel · canonical/ubuntu linux · opensuse/leap · redhat/enterprise linux
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/09/10/4Mailing List, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a8318c13e79badb92bc6640704a64cc022a6eb97Exploit, Mailing List, Patch, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20191004-0001/Third Party Advisory
- https://usn.ubuntu.com/4135-1/Third Party Advisory
- https://usn.ubuntu.com/4135-2/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2019/09/10/4Mailing List, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a8318c13e79badb92bc6640704a64cc022a6eb97Exploit, Mailing List, Patch, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20191004-0001/Third Party Advisory
- https://usn.ubuntu.com/4135-1/Third Party Advisory
- https://usn.ubuntu.com/4135-2/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.