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CVE-2021-3752

HIGH

7.1

CVSS Score

Published: February 16, 2022 at 06:35 PM UTC

Updated: June 17, 2026 at 04:05 AM UTC

28 products affected across 6 vendorsLinux KernelDebian LinuxFedora

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Severity

HIGH7.1

Exploit prediction

EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

Fedora · Fedora Projectrpm

95%

Linux Kernel · Linux

95%

2.6.12 ≤ v < 4.4.2934.10 ≤ v < 4.14.2564.15 ≤ v < 4.19.2184.20 ≤ v < 5.4.1604.5 ≤ v < 4.9.2915.11 ≤ v < 5.14.195.15 ≤ v < 5.15.35.5 ≤ v < 5.10.80

Affected range stops below 4.14.256, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.19.218, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.4.293, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.9.291, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.10.80, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.14.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.15.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.160, so it looks safe — our inference, not a vendor statement

H300E Firmware · NetAppdrupal

95%

All versions

netapp-h300e (same device)

H300S Firmware · NetAppdrupal

95%

All versions

netapp-h300s (same device)

H410C Firmware · NetAppdrupal

95%

All versions

netapp-h410c (same device)

H410S Firmware · NetAppdrupal

95%

All versions

netapp-h410s (same device)

H500E Firmware · NetAppdrupal

95%

All versions

netapp-h500e (same device)

H500S Firmware · NetAppdrupal

95%

All versions

netapp-h500s (same device)

H700E Firmware · NetAppdrupal

95%

All versions

netapp-h700e (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (8)

x_refsource_MISCIssue TrackingThird Party Advisory

Source: [email protected]

https://bugzilla.redhat.com/show_bug.cgi?id=1999544

Mailing Listx_refsource_MLISTThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html

Mailing Listx_refsource_MLISTThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html

x_refsource_MISC

Source: [email protected]

https://lore.kernel.org/lkml/20211115165435.133245729%40linuxfoundation.org/

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://security.netapp.com/advisory/ntap-20220318-0009/

Vendor Advisoryx_refsource_DEBIANThird Party Advisory

Source: [email protected]

https://www.debian.org/security/2022/dsa-5096

x_refsource_MISCExploitMailing ListThird Party Advisory

Source: [email protected]

https://www.openwall.com/lists/oss-security/2021/09/15/4

x_refsource_MISCPatchThird Party Advisory

Source: [email protected]

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

CVSS

7.1HIGH[email protected]

Attack Vector: ADJACENT_NETWORK
Complexity: HIGH
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-416CWE-362

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