A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2689-1 linux security update
Debian DLA Debian DLA DLA-2690-1 linux-4.19 security update
EUVD EUVD EUVD-2021-26882 A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5.
Ubuntu USN Ubuntu USN USN-5015-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5044-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5045-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5046-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5050-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5343-1 Linux kernel vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-03T17:01:07.293Z

Reserved: 2021-06-01T00:00:00.000Z

Link: CVE-2021-3573

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-08-13T14:15:07.617

Modified: 2024-11-21T06:21:52.687

Link: CVE-2021-3573

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-06-08T00:00:00Z

Links: CVE-2021-3573 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses