RHSA-2021:0019: Moderate: kernel security and bug fix update
The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: race condition in smptasktimedout() and smptaskdone() in drivers/scsi/libsas/sasexpander.c leads to use-after-free (CVE-2018-20836)</li> <li> kernel: use-after-free in drivers/bluetooth/hcildisc.c (CVE-2019-15917)</li> <li> kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)</li> For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.<br>Bug Fix(es):<br><li> RHEL7 - [ Brazos ] "Core(s) per socket" and "Socket" values are interchanged in lscpu output. (kernel) (BZ#1879096)</li> <li> [DELL EMC 7.9 BUG] System crash when stressed using burnin stress tool (BZ#1893994)</li> <li> [ Marvell 7.9] update qla2xxx driver with critical bug fixes (BZ#1895440)</li>
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:0019?
The severity of RHSA-2021:0019 is classified as moderate.
How do I fix RHSA-2021:0019?
To fix RHSA-2021:0019, you should update your kernel package to version 3.10.0-1062.43.1.el7.
What vulnerabilities are addressed in RHSA-2021:0019?
RHSA-2021:0019 addresses a race condition leading to a use-after-free vulnerability (CVE-2018-20836) in the Linux kernel.
Which systems are affected by RHSA-2021:0019?
Systems using kernel version below 3.10.0-1062.43.1.el7 are affected by RHSA-2021:0019.
Is a system reboot required after applying the fix for RHSA-2021:0019?
Yes, a system reboot is required to fully apply the fix for RHSA-2021:0019.