Updated: 2023-03-10 12:28:07.061403
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.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | MEDIUM | 6.9 |
| CVSS Version 3.x | MEDIUM | 6.4 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated |
|---|---|---|---|---|---|---|---|
| CentOS 6 ELS | kernel | 2.6.32 | 6.4 | MEDIUM | Released | CLSA-2021:1632262296 | 2022-05-05 12:01:35 |
| CentOS 8.4 ELS | kernel | 4.18.0-305.25.1 | 6.4 | MEDIUM | Released | CLSA-2022:1651145959 | 2022-04-28 16:00:02 |
| CentOS 8.5 ELS | kernel | 4.18.0-348.7.1 | 6.4 | MEDIUM | Ignored | 2022-02-21 05:39:39 | |
| CloudLinux 6 ELS | kernel | 2.6.32 | 6.4 | MEDIUM | Ignored | 2022-01-27 11:19:57 | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 6.4 | MEDIUM | Released | CLSA-2022:1669850228 | 2022-11-30 19:57:37 |
| Ubuntu 16.04 ELS | linux | 4.4.0 | 6.4 | MEDIUM | Released | CLSA-2022:1643637294 | 2022-01-31 11:44:56 |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 6.4 | MEDIUM | Ignored | 2022-09-28 08:02:35 | |
| Ubuntu 18.04 ELS | linux | 4.15.0 | 6.4 | MEDIUM | Ignored | 2023-03-02 04:04:09 |