Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.12, < 4.4.293 |
| Redhat | 3Scale | 2.0 |
| Redhat | Virtualization Host | 4.0 |
| Fedoraproject | Fedora | 34 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux For Real Time | 7 |
| Redhat | Enterprise Linux For Real Time For Nfv | 7 |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
| Netapp | H700S Firmware | - |
| Netapp | H700S | - |
| Netapp | H300E Firmware | - |
| Netapp | H300E | - |
| Netapp | H500E Firmware | - |
| Netapp | H500E | - |
| Netapp | H700E Firmware | - |
| Netapp | H700E | - |
| Netapp | H410S Firmware | - |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1999544Issue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing ListThird Party Advisory
- https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org/
- https://security.netapp.com/advisory/ntap-20220318-0009/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5096Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/09/15/4ExploitMailing ListThird Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1999544Issue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing ListThird Party Advisory
- https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org/
- https://security.netapp.com/advisory/ntap-20220318-0009/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5096Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/09/15/4ExploitMailing ListThird Party Advisory
FAQ
What is CVE-2021-3752?
CVE-2021-3752 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 ...
How severe is CVE-2021-3752?
CVE-2021-3752 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3752?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat 3Scale, Redhat Virtualization Host, Fedoraproject Fedora, Redhat Enterprise Linux.