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ubuntucveUbuntu.comUB:CVE-2021-38604
HistoryAug 12, 2021 - 12:00 a.m.

CVE-2021-38604

2021-08-1200:00:00
ubuntu.com
ubuntu.com
50

7.5 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.017 Low

EPSS

Percentile

87.8%

In librt in the GNU C Library (aka glibc) through 2.34,
sysdeps/unix/sysv/linux/mq_notify.c mishandles certain NOTIFY_REMOVED data,
leading to a NULL pointer dereference. NOTE: this vulnerability was
introduced as a side effect of the CVE-2021-33574 fix.

Bugs

Notes

Author Note
sbeattie 21.04 and earlier are not affected due to the fix for CVE-2021-33574 having not been introduced yet.

7.5 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.017 Low

EPSS

Percentile

87.8%