CVE-2021-3752

moderate-risk
Published 2022-02-16

A use-after-free flaw was found in the Linux kernel’s Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Do I need to act?

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0.04% 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
7
CVSS 7.1/10 High
ADJACENT_NETWORK / HIGH complexity

Affected Products (20)

3Scale

Affected Vendors

Debian Redhat Linux Oracle Fedoraproject Netapp

References (16)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1999544
Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org/
Third Party Advisory https://security.netapp.com/advisory/ntap-20220318-0009/
Third Party Advisory https://www.debian.org/security/2022/dsa-5096
Exploit https://www.openwall.com/lists/oss-security/2021/09/15/4
Patch https://www.oracle.com/security-alerts/cpujul2022.html
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1999544
Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org/
Third Party Advisory https://security.netapp.com/advisory/ntap-20220318-0009/
Third Party Advisory https://www.debian.org/security/2022/dsa-5096
Exploit https://www.openwall.com/lists/oss-security/2021/09/15/4
Patch https://www.oracle.com/security-alerts/cpujul2022.html
38
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 20/34 · Moderate