6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
6.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
5.1%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux-gkeop | < 5.4.0-1022.23 | UNKNOWN |
ubuntu | 22.04 | noarch | linux-gkeop | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.8 | < 5.8.0-1042.44~20.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux | < 4.15.0-154.161 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < 5.4.0-81.91 | UNKNOWN |
ubuntu | 21.04 | noarch | linux | < 5.11.0-31.33 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-222.255 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1110.117 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1055.58 | UNKNOWN |
ubuntu | 21.04 | noarch | linux-aws | < 5.11.0-1016.17 | UNKNOWN |
launchpad.net/bugs/cve/CVE-2021-3573
nvd.nist.gov/vuln/detail/CVE-2021-3573
security-tracker.debian.org/tracker/CVE-2021-3573
ubuntu.com/security/notices/USN-5015-1
ubuntu.com/security/notices/USN-5044-1
ubuntu.com/security/notices/USN-5045-1
ubuntu.com/security/notices/USN-5046-1
ubuntu.com/security/notices/USN-5050-1
ubuntu.com/security/notices/USN-5343-1
www.cve.org/CVERecord?id=CVE-2021-3573
www.openwall.com/lists/oss-security/2021/06/08/2
6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
6.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
5.1%