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ubuntucveUbuntu.comUB:CVE-2022-23960
HistoryMar 08, 2022 - 12:00 a.m.

CVE-2022-23960

2022-03-0800:00:00
ubuntu.com
ubuntu.com
43
arm cortex
neoverse processors
spectre-bhb
cache speculation
branch history buffer
sensitive information
cache allocation

CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

CVSS3

5.6

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS

0.001

Percentile

22.9%

JSON

Certain Arm Cortex and Neoverse processors through 2022-03-08 do not
properly restrict cache speculation, aka Spectre-BHB. An attacker can
leverage the shared branch history in the Branch History Buffer (BHB) to
influence mispredicted branches. Then, cache allocation can allow the
attacker to obtain sensitive information.

Notes

Author Note
sbeattie unprivileged eBPF was already disabled by default for 5.13 and newer kernels ARM specific issue
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-184.194UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-117.132UNKNOWN
ubuntu21.10noarchlinux< 5.13.0-35.40UNKNOWN
ubuntu14.04noarchlinux< anyUNKNOWN
ubuntu16.04noarchlinux< anyUNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1133.143UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1078.84UNKNOWN
ubuntu21.10noarchlinux-aws< 5.13.0-1017.19UNKNOWN
ubuntu14.04noarchlinux-aws< anyUNKNOWN
ubuntu16.04noarchlinux-aws< anyUNKNOWN
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CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

CVSS3

5.6

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

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Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS

0.001

Percentile

22.9%

JSON
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