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ubuntucveUbuntu.comUB:CVE-2021-31829
HistoryMay 06, 2021 - 12:00 a.m.

CVE-2021-31829

2021-05-0600:00:00
ubuntu.com
ubuntu.com
30

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.1 Low

CVSS2

Access Vector

Access Complexity

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

16.3%

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs
undesirable speculative loads, leading to disclosure of stack content via
side-channel attacks, aka CID-801c6058d14a. The specific concern is not
protecting the BPF stack area against speculative loads. Also, the BPF
stack can contain uninitialized data that might represent sensitive
information previously operated on by the kernel.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-151.157UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-77.86UNKNOWN
ubuntu20.10noarchlinux< 5.8.0-59.66UNKNOWN
ubuntu21.04noarchlinux< 5.11.0-22.23UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1109.116UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1051.53UNKNOWN
ubuntu20.10noarchlinux-aws< 5.8.0-1038.40UNKNOWN
ubuntu21.04noarchlinux-aws< 5.11.0-1011.11UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1051.53~18.04.1UNKNOWN
ubuntu20.04noarchlinux-aws-5.8< 5.8.0-1038.40~20.04.1UNKNOWN
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5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.1 Low

CVSS2

Access Vector

Access Complexity

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

16.3%