CVE-2020-10768

low-risk
Published 2020-09-16

A flaw was found in the Linux Kernel before 5.8-rc1 in the prctl() function, where it can be used to enable indirect branch speculation after it has been disabled. This call incorrectly reports it as being 'force disabled' when it is not and opens the system to Spectre v2 attacks. The highest threat from this vulnerability is to confidentiality.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (4)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10768
Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d...
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10768
Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d...
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal