CVE-2021-42739

MEDIUM

Linux kernel < 5.14.13 - Out-of-bounds Write in Firewire Subsystem

Title source: llm

Description

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.

References (6)

Core 6

Core References

Mailing List

https://lore.kernel.org/linux-media/YHaulytonFcW+lyZ%40mwanda/

Issue Tracking, Mitigation, Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1951739

Patch, Third Party Advisory

https://www.oracle.com/security-alerts/cpujul2022.html

Third Party Advisory

https://www.starwindsoftware.com/security/sw-20220804-0001/

Mailing List

https://seclists.org/oss-sec/2021/q2/46

Patch

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=35d2969ea3c7d32aee78066b1f3cf61a0d935a4e

Scores

CVSS v3 6.7

EPSS 0.0011

EPSS Percentile 28.9%

Attack Vector LOCAL

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

Details

CWE

CWE-787

Status published

Products (10)

debian/debian_linux 9.0

fedoraproject/fedora 33

fedoraproject/fedora 34

fedoraproject/fedora 35

linux/linux_kernel < 5.14.13

oracle/communications_cloud_native_core_binding_support_function 22.1.3

oracle/communications_cloud_native_core_network_exposure_function 22.1.1

oracle/communications_cloud_native_core_policy 22.2.0

starwindsoftware/starwind_san_\&_nas v8r12

starwindsoftware/starwind_virtual_san v8r13 14338

Published Oct 20, 2021

Tracked Since Feb 18, 2026