CVE-2018-15572

Name: CVE-2018-15572
Creator: NVD / NIST
Published: 2018-08-20T02:29:00.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.51%

Last modified Jun 17, 2026

CVE-2018-15572 is a vulnerability of currently unknown severity. The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks.

Metrics

EPSS Probability

0.51%

39.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Linux	Linux Kernel	< 4.18.1

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fdf82a7856b32d905c39afc85e34364491e46346Mitigation, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1Mitigation, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/fdf82a7856b32d905c39afc85e34364491e46346Mitigation, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3775-1/Third Party Advisory
https://usn.ubuntu.com/3775-2/Third Party Advisory
https://usn.ubuntu.com/3776-1/Third Party Advisory
https://usn.ubuntu.com/3776-2/Third Party Advisory
https://usn.ubuntu.com/3777-1/Third Party Advisory
https://usn.ubuntu.com/3777-2/Third Party Advisory
https://usn.ubuntu.com/3777-3/Third Party Advisory
https://www.debian.org/security/2018/dsa-4308Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fdf82a7856b32d905c39afc85e34364491e46346Mitigation, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1Mitigation, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/fdf82a7856b32d905c39afc85e34364491e46346Mitigation, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3775-1/Third Party Advisory
https://usn.ubuntu.com/3775-2/Third Party Advisory
https://usn.ubuntu.com/3776-1/Third Party Advisory
https://usn.ubuntu.com/3776-2/Third Party Advisory
https://usn.ubuntu.com/3777-1/Third Party Advisory
https://usn.ubuntu.com/3777-2/Third Party Advisory
https://usn.ubuntu.com/3777-3/Third Party Advisory
https://www.debian.org/security/2018/dsa-4308Third Party Advisory

Timeline

Published: Aug 20, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-15572?

How severe is CVE-2018-15572?

Severity scoring for CVE-2018-15572 is pending analysis. The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2018-15572?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-15572?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST