CVEvulnerability

CVE-2019-15031

4.4 MEDIUM Published 2019-09-13 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-09-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.4 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
CVSS 2.0 ([email protected])
3.6 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:P
Weaknesses
CWE-662

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.

Affected configurations

• linux linux kernel (<= 5.2.14) • canonical ubuntu linux 12.04 • canonical ubuntu linux 14.04 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 19.04 • opensuse leap 15.0 • opensuse leap 15.1 • redhat enterprise linux 7.0 • redhat enterprise linux 8.0

Related

Weakness · CWE (1)

  • CWE-662 Improper Synchronization weakness

References