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ubuntucveUbuntu.comUB:CVE-2021-33909
HistoryJul 20, 2021 - 12:00 a.m.

CVE-2021-33909

2021-07-2000:00:00
ubuntu.com
ubuntu.com
43

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.002 Low

EPSS

Percentile

55.8%

JSON

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does
not properly restrict seq buffer allocations, leading to an integer
overflow, an Out-of-bounds Write, and escalation to root by an unprivileged
user, aka CID-8cae8cd89f05.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-151.157UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-80.90UNKNOWN
ubuntu20.10noarchlinux< 5.8.0-63.71UNKNOWN
ubuntu21.04noarchlinux< 5.11.0-25.27UNKNOWN
ubuntu14.04noarchlinux< 3.13.0-186.237) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux< 4.4.0-212.244) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1109.116UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1054.57UNKNOWN
ubuntu20.10noarchlinux-aws< 5.8.0-1041.43UNKNOWN
ubuntu21.04noarchlinux-aws< 5.11.0-1014.15UNKNOWN
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7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

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7.2 High

CVSS2

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Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.002 Low

EPSS

Percentile

55.8%

JSON
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