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cve[email protected]CVE-2021-42739
HistoryOct 20, 2021 - 7:15 a.m.

CVE-2021-42739

2021-10-2007:15:09
CWE-787
web.nvd.nist.gov
247
3
cve-2021-42739
linux kernel
firedtv
media card driver
buffer overflow
local user
system crash
privilege escalation
vulnerability

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

7.1 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.9%

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.

Affected configurations

NVD
Node
linuxlinux_kernelRange5.14.13
Node
fedoraprojectfedoraMatch33
OR
fedoraprojectfedoraMatch34
OR
fedoraprojectfedoraMatch35
Node
debiandebian_linuxMatch9.0
Node
starwindsoftwarestarwind_san_\&_nasMatchv8r12
OR
starwindsoftwarestarwind_virtual_sanMatchv8r1314338
Node
oraclecommunications_cloud_native_core_binding_support_functionMatch22.1.3
OR
oraclecommunications_cloud_native_core_network_exposure_functionMatch22.1.1
OR
oraclecommunications_cloud_native_core_policyMatch22.2.0

Social References

More

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

7.1 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.9%