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CVE-2021-3640 Detail

Description

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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Hyperlink Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1980646 Issue Tracking  Patch  Third Party Advisory 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/bluetooth/sco.c?h=v5.16&id=99c23da0eed4fd20cae8243f2b51e10e66aa0951 Patch  Vendor Advisory 
https://github.com/torvalds/linux/commit/99c23da0eed4fd20cae8243f2b51e10e66aa0951 Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html Mailing List  Third Party Advisory 
https://security.netapp.com/advisory/ntap-20220419-0003/ Third Party Advisory 
https://ubuntu.com/security/CVE-2021-3640 Patch  Third Party Advisory 
https://www.debian.org/security/2022/dsa-5096 Third Party Advisory 
https://www.openwall.com/lists/oss-security/2021/07/22/1 Exploit  Mailing List  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

11 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-3640
NVD Published Date:
03/03/2022
NVD Last Modified:
11/06/2023
Source:
Red Hat, Inc.