CVE-2018-15594 Information

Description

arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests.

CVSS Vector

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

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5800dc5c19f34e6e03b5adab1282535cb102fafd http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html http://www.securityfocus.com/bid/105120 http://www.securitytracker.com/id/1041601 https://access.redhat.com/errata/RHSA-2019:2029 https://access.redhat.com/errata/RHSA-2019:2043 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1 https://github.com/torvalds/linux/commit/5800dc5c19f34e6e03b5adab1282535cb102fafd https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html https://twitter.com/grsecurity/status/1029324426142199808 https://usn.ubuntu.com/3775-1/ https://usn.ubuntu.com/3775-2/ https://usn.ubuntu.com/3776-1/ https://usn.ubuntu.com/3776-2/ https://usn.ubuntu.com/3777-1/ https://usn.ubuntu.com/3777-2/ https://usn.ubuntu.com/3777-3/ https://www.debian.org/security/2018/dsa-4308

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.5