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ubuntucveUbuntu.comUB:CVE-2021-42739
HistoryOct 20, 2021 - 12:00 a.m.

CVE-2021-42739

2021-10-2000:00:00
ubuntu.com
ubuntu.com
25

4.6 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.6 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

60.1%

The firewire subsystem in the Linux kernel through 5.14.13 has a buffer
overflow related to drivers/media/firewire/firedtv-avc.c and
drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandles bounds
checking.

Notes

Author Note
mdeslaur CVE-2021-3542 was marked as a duplicate of this CVE, see https://bugzilla.suse.com/show_bug.cgi?id=1184673#c17
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-167.175UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-97.110UNKNOWN
ubuntu21.10noarchlinux< 5.13.0-28.31UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-223.256UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1119.127UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1064.67UNKNOWN
ubuntu21.10noarchlinux-aws< 5.13.0-1012.13UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1103.108UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1139.153UNKNOWN
ubuntu20.04noarchlinux-aws-5.11< 5.11.0-1028.31~20.04.1UNKNOWN
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4.6 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.6 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

60.1%