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ubuntucveUbuntu.comUB:CVE-2021-28971
HistoryMar 22, 2021 - 12:00 a.m.

CVE-2021-28971

2021-03-2200:00:00
ubuntu.com
ubuntu.com
26

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

4.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.0004 Low

EPSS

Percentile

13.2%

JSON

In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux
kernel through 5.11.8 on some Haswell CPUs, userspace applications (such as
perf-fuzzer) can cause a system crash because the PEBS status in a PEBS
record is mishandled, aka CID-d88d05a9e0b6.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-144.148UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-74.83UNKNOWN
ubuntu20.10noarchlinux< 5.8.0-55.62UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1103.110UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1049.51UNKNOWN
ubuntu20.10noarchlinux-aws< 5.8.0-1035.37UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1049.51~18.04.1UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1103.110~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchlinux-azure< 5.4.0-1048.50UNKNOWN
ubuntu20.10noarchlinux-azure< 5.8.0-1033.35UNKNOWN
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CVE-2021-28971 affecting package kernel 5.10.78.1-1
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5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

4.9 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.0004 Low

EPSS

Percentile

13.2%

JSON
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