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CVE-2017-7518

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CVE-2017-7518

Published: Jul 30, 2018

Modified: Aug 5, 2024

PUBLISHED

CVSS v3.0

5.5

MEDIUM

Description

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.

VendorProductVersions

[UNKNOWN]

Kernel:

affected
4.12

Weaknesses (CWE)

CWE-250

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

References

RHSA-2018:0412
vendor-advisory
x_refsource_REDHAT
USN-3619-2
vendor-advisory
x_refsource_UBUNTU
RHSA-2018:0395
vendor-advisory
x_refsource_REDHAT
USN-3754-1
vendor-advisory
x_refsource_UBUNTU
1038782
vdb-entry
x_refsource_SECTRACK
USN-3619-1
vendor-advisory
x_refsource_UBUNTU
DSA-3981
vendor-advisory
x_refsource_DEBIAN
99263
vdb-entry
x_refsource_BID

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