CVE-2018-15594

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.02%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2018-15594?
CVE-2018-15594 has been scored as a medium severity vulnerability.
How to fix CVE-2018-15594?
To fix CVE-2018-15594, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-15594 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-15594 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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