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.
Published: 2022-03-03
Score: 7.0 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2940-1 linux security update
Debian DLA Debian DLA DLA-2941-1 linux-4.19 security update
Debian DSA Debian DSA DSA-5096-1 linux security update
EUVD EUVD EUVD-2021-26940 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.
Ubuntu USN Ubuntu USN USN-5265-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5267-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5267-3 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-5268-1 Linux kernel vulnerabilities
History

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Subscriptions

Canonical Ubuntu Linux
Debian Debian Linux
Fedoraproject Fedora
Linux Linux Kernel
Netapp H300e H300e Firmware H300s H300s Firmware H410c H410c Firmware H410s H410s Firmware H500e H500e Firmware H500s H500s Firmware H700e H700e Firmware H700s H700s Firmware
Redhat Enterprise Linux Rhel Eus Rhev Hypervisor
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-03T17:01:07.744Z

Reserved: 2021-07-09T00:00:00.000Z

Link: CVE-2021-3640

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-03-03T23:15:08.197

Modified: 2024-11-21T06:22:03.073

Link: CVE-2021-3640

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-07-18T00:00:00Z

Links: CVE-2021-3640 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses