6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0005 Low
EPSS
Percentile
16.5%
Non-transparent sharing of branch predictor selectors between contexts in
some Intel® Processors may allow an authorized user to potentially enable
information disclosure via local access.
Author | Note |
---|---|
sbeattie | unprivileged eBPF was already disabled by default for 5.13 and newer kernels this issue is priority medium for trusty/3.13 kernels, as unprivileged BPF was not yet available in the Linux kernel of that era. |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-171.180 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < 5.4.0-104.118 | UNKNOWN |
ubuntu | 21.10 | noarch | linux | < 5.13.0-35.40 | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-221.254) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1123.132 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1068.72 | UNKNOWN |
ubuntu | 21.10 | noarch | linux-aws | < 5.13.0-1017.19 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1101.106) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1137.151) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
community.intel.com/t5/Blogs/Products-and-Solutions/Security/Chips-Salsa-Episode-12-March-2022-Security-Advisories/post/1365250
intel.com/content/www/us/en/security-center/advisory/intel-sa-00598.html
launchpad.net/bugs/cve/CVE-2022-0001
nvd.nist.gov/vuln/detail/CVE-2022-0001
security-tracker.debian.org/tracker/CVE-2022-0001
ubuntu.com/security/notices/USN-5317-1
ubuntu.com/security/notices/USN-5318-1
ubuntu.com/security/notices/USN-5319-1
ubuntu.com/security/notices/USN-5362-1
wiki.ubuntu.com/SecurityTeam/KnowledgeBase/BHI
www.cve.org/CVERecord?id=CVE-2022-0001
www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/technical-documentation/branch-history-injection.html
www.vusec.net/projects/bhi-spectre-bhb/
6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
0.0005 Low
EPSS
Percentile
16.5%