(RHSA-2022:0622) Important: kernel-rt security and bug fix update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)

• kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)

• kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155)

• kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)

• kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)

• kernel: out of bounds write in hid-multitouch.c may lead to escalation of privilege (CVE-2020-0465)

• kernel: double free in bluetooth subsystem when the HCI device initialization fails (CVE-2021-3564)

• kernel: use-after-free in function hci_sock_bound_ioctl() (CVE-2021-3573)

• kernel: possible use-after-free in bluetooth module (CVE-2021-3752)

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.

Bug Fix(es):

• kernel-rt: update to the latest RHEL7.9.z12 source tree (BZ#2039101)