4.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
3.6 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:N/A:P
0.0004 Low
EPSS
Percentile
5.3%
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.
Author | Note |
---|---|
sbeattie | powerpc arches only |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-64.73 | UNKNOWN |
ubuntu | 19.04 | noarch | linux | < 5.0.0-29.31 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1050.52 | UNKNOWN |
ubuntu | 19.04 | noarch | linux-aws | < 5.0.0-1016.18 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1050.52~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure | < 5.0.0-1020.21~18.04.1 | UNKNOWN |
ubuntu | 19.04 | noarch | linux-azure | < 5.0.0-1020.21 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-azure | < 4.15.0-1059.64~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1059.64 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure-edge | < 5.0.0-1020.21~18.04.1 | UNKNOWN |
git.kernel.org/linus/8205d5d98ef7f155de211f5e2eb6ca03d95a5a60
launchpad.net/bugs/cve/CVE-2019-15030
nvd.nist.gov/vuln/detail/CVE-2019-15030
security-tracker.debian.org/tracker/CVE-2019-15030
ubuntu.com/security/notices/USN-4135-1
ubuntu.com/security/notices/USN-4135-2
www.cve.org/CVERecord?id=CVE-2019-15030
4.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
3.6 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:N/A:P
0.0004 Low
EPSS
Percentile
5.3%