CVE-2018-15594

kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests

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Severity

Moderate

Red Hat Product Security

5.6

CVSS 3.0

Review impact separately from score.

Published · August 3, 2018

Updated · June 28, 2026

Description

It was found that paravirt_patch_call/jump() functions in the arch/x86/kernel/paravirt.c in the Linux kernel mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtualized guests.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5.6
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor