Ubuntu.comUB:CVE-2022-0002CVE-2022-0002
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack 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
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
0.0005 Low
EPSS
Percentile
16.1%
Non-transparent sharing of branch predictor within a context in some
Intel® Processors may allow an authorized user to potentially enable
information disclosure via local access.
Notes
| 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 | 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 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1137.151 | UNKNOWN |
References
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-2022-0002
nvd.nist.gov/vuln/detail/CVE-2022-0002
security-tracker.debian.org/tracker/CVE-2022-0002
ubuntu.com/security/notices/USN-5317-1
ubuntu.com/security/notices/USN-5318-1
ubuntu.com/security/notices/USN-5319-1
wiki.ubuntu.com/SecurityTeam/KnowledgeBase/BHI
www.cve.org/CVERecord?id=CVE-2022-0002
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/
Related
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack 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
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
0.0005 Low
EPSS
Percentile
16.1%