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
0.05% LOW
0% probability -0.02%
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

  • 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: 0.05%• Percentile: 16%

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

  • linux•linux_kernel

    ≤ 5.2.14

  • opensuse•leap

    15.0 | 15.1

  • redhat•enterprise_linux

    7.0 | 8.0

References (7)