Description
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.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-2689-1 | linux security update |
Debian DLA |
DLA-2690-1 | linux-4.19 security update |
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 |
USN-5015-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-5044-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5045-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5046-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5050-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5343-1 | Linux kernel vulnerabilities |
References
History
No history.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-03T17:01:07.293Z
Reserved: 2021-06-01T00:00:00.000Z
Link: CVE-2021-3573
No data.
Status : Modified
Published: 2021-08-13T14:15:07.617
Modified: 2024-11-21T06:21:52.687
Link: CVE-2021-3573
OpenCVE Enrichment
No data.
Debian DLA
EUVD
Ubuntu USN