A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to perform a Spectre V2 style attack when this configuration is active. The highest threat from this vulnerability is to confidentiality.
CVE-2020-10767
This medium-severity CVE scores 5.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 71% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.5
- EG Score
- 5.5(medium)
- EPSS
- 29.3%
- KEV
- Not listed
Published
September 15, 2020
Last Modified
November 21, 2024
References (4)
- secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10767
- secalert@redhathttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=21998a351512eba4ed5969006f0c55882d995ada
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10767
- af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=21998a351512eba4ed5969006f0c55882d995ada
Patch Availability(10)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | linux-image-oem-osp1 (5.0.0.1065.63) @ bionic | 2026-05-23 | ubuntu |
| ubuntu | linux-image-virtual-lts-xenial (4.4.0.186.192) @ xenial | 2026-05-23 | ubuntu |
| ubuntu | linux-image-virtual-hwe-18.04-edge (5.4.0.45.49~18.04.38) @ bionic | 2026-05-23 | ubuntu |
| ubuntu | linux-image-virtual-hwe-16.04-edge (4.15.0.115.103) @ bionic | 2026-05-23 | ubuntu |
| ubuntu | linux-image-raspi2-hwe-18.04 (5.3.0.1030.20) @ bionic | 2026-05-23 | ubuntu |
| redhat | kpatch-patch | 2020-08-04 | redhat |
| redhat | kernel-0:4.18.0-147.24.2.el8_1 | 2020-07-29 | redhat |
| redhat | kernel-0:4.18.0-193.13.2.el8_2 | 2020-07-21 | redhat |
| redhat | kernel-0:4.18.0-80.27.1.el8_0 | 2020-07-21 | redhat |
| redhat | kernel-rt-0:4.18.0-193.13.2.rt13.65.el8_2 | 2020-07-21 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(12)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Microsoft MSRCCVE-2020-107672020-09-25
A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to perform a Spectre V2 style attack when this configuration is active. The highest threat from this vulnerability is to confidentiality.
- Red HatRHSA-2020:3010IMPORTANT2020-06-09
RHSA-2020:3010 — Important
- Red HatRHSA-2020:3016IMPORTANT2020-06-09
RHSA-2020:3016 — Important
- Red HatRHSA-2020:3041IMPORTANT2020-06-09
RHSA-2020:3041 — Important
- Red HatRHSA-2020:3073IMPORTANT2020-06-09
RHSA-2020:3073 — Important
- Red HatRHSA-2020:3222IMPORTANT2020-06-09
RHSA-2020:3222 — Important
- Red HatRHSA-2020:3297IMPORTANT2020-06-09
RHSA-2020:3297 — Important
- UbuntuUSN-4427-1MEDIUM
Linux kernel vulnerabilities
- UbuntuUSN-4439-1MEDIUM
Linux kernel vulnerabilities
- UbuntuUSN-4440-1MEDIUM
linux kernel vulnerabilities
- UbuntuUSN-4483-1MEDIUM
Linux kernel vulnerabilities
- UbuntuUSN-4485-1MEDIUM
Linux kernel vulnerabilities
Data Freshness Timeline
(refreshed 12× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 22:32 UTCEG score recompute
- 2026-07-22 14:05 UTCEPSS rescore
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- 2026-06-24 12:48 UTCOSV refresh
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- 2026-06-07 17:16 UTCOSV refresh
- 2026-06-07 15:23 UTCEPSS rescore
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- 2026-05-23 07:47 UTCEG score recompute
- 2026-05-23 07:47 UTCVendor advisory
- 2026-05-23 07:47 UTCGHSA enrichment
Frequently asked(5)
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