Race Condition Affecting kernel-64kb package, versions <5.3.18-59.13.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-SLES153-KERNEL64KB-2672066
  • published14 Apr 2022
  • disclosed15 Jul 2021

Introduced: 15 Jul 2021

CVE-2021-3573  (opens in a new tab)
CWE-362  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade SLES:15.3 kernel-64kb to version 5.3.18-59.13.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64kb package and not the kernel-64kb package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

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.

CVSS Scores

version 3.1