CVE-2021-42739

moderate-risk
Published 2021-10-20

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.

Do I need to act?

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0.11% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.7/10 Medium
LOCAL / LOW complexity

Affected Products (10)

Starwind San \& Nas

Affected Vendors

Debian Linux Oracle Fedoraproject Starwindsoftware

References (12)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1951739
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=35...
https://lore.kernel.org/linux-media/YHaulytonFcW+lyZ%40mwanda/
https://seclists.org/oss-sec/2021/q2/46
Patch https://www.oracle.com/security-alerts/cpujul2022.html
Third Party Advisory https://www.starwindsoftware.com/security/sw-20220804-0001/
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1951739
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=35...
https://lore.kernel.org/linux-media/YHaulytonFcW+lyZ%40mwanda/
https://seclists.org/oss-sec/2021/q2/46
Patch https://www.oracle.com/security-alerts/cpujul2022.html
Third Party Advisory https://www.starwindsoftware.com/security/sw-20220804-0001/
37
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 16/34 · Moderate