The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: * kernel: use-after-free in sound/core/timer.c * kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c * kernel: race condition in smp_task_timedout and smp_task_done in drivers/scsi/libsas/sas_expander.c leads to use-after-free * kernel: out of bounds write in i2c driver leads to local escalation of privilege * kernel: use after free due to race condition in the video driver leads to local privilege escalation Space precludes documenting all of the security fixes in this advisory. See the descriptions of the remaining security fixes in the related Knowledge Article: https://access.redhat.com/articles/5442421 For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.9 Release Notes linked from the References section.