CVE-2019-15031

Aliases:UBUNTU-CVE-2019-15031DEBIAN-CVE-2019-15031
Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 13 Sept 2019, 12:45
Last modified:05 Aug 2024, 00:34

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
4.4 MEDIUM
v3.1 (nvd)
EPSS Score
0.56% LOW
1% probability +0.49%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

13 Sept 2019, 12:45
Published
Vulnerability first disclosed
05 Aug 2024, 00:34
Last Modified
Vulnerability information updated

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 Metrics

  • v4.0•LOW•Score: 2CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
  • v2.0•LOW•Score: 3.6AV:L/AC:L/Au:N/C:P/I:N/A:P

EPSS Trends

Current EPSS score: 0.56%• Percentile: 45%

Techniques & Countermeasures

  • CWE-662•Improper Synchronization

    The product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes.

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 18.04 | 19.04

  • debian•linux

    < 5.2.17-1 | < 5.2.17-1 | < 5.2.17-1 | < 5.2.17-1

  • ubuntu•linux

    < 4.15.0-64.73

  • ubuntu•linux-aws

    < 4.15.0-1050.52

  • ubuntu•linux-aws-fips

    < 4.15.0-2018.18 | all

  • ubuntu•linux-aws-hwe

    < 4.15.0-1050.52~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1059.64~14.04.1 | < 4.15.0-1059.64 | < 5.0.0-1020.21~18.04.1

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2006.7 | all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-gcp

    < 4.15.0-1044.46 | < 4.15.0-1044.70

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    < 4.15.0-1044.46

  • ubuntu•linux-gke-5.0

    < 5.0.0-1017.17~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-64.73~16.04.1 | < 5.0.0-29.31~18.04.1

  • ubuntu•linux-hwe-edge

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.15.0-1046.46

  • ubuntu•linux-oem

    < 4.15.0-1056.65

  • ubuntu•linux-oem-osp1

    < 5.0.0-1022.24

  • ubuntu•linux-oracle

    < 4.15.0-1025.28~16.04.1 | < 4.15.0-1025.28

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.15.0-1047.51

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all | all

  • ubuntu•linux-snapdragon

    < 4.15.0-1064.71

  • linux•linux_kernel

    ≤ 5.2.14

  • opensuse•leap

    15.0 | 15.1

  • redhat•enterprise_linux

    7.0 | 8.0

References (13)