Threat Encyclopedia

RHSA-2021:2316-Security Advisory

Description

The vulnerabilities in the following products could cause the system to become vulnerable to malicious security attack: kernel-rt

Analysis

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: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362) kernel: Use after free via PI futex state (CVE-2021-3347) kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c (CVE-2020-8648) kernel: Improper input validation in some Intel(R) Graphics Drivers (CVE-2020-12363) kernel: Null pointer dereference in some Intel(R) Graphics Drivers (CVE-2020-12364) kernel: Speculation on pointer arithmetic against bpf_context pointer (CVE-2020-27170) kernel: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362) kernel: Use after free via PI futex state (CVE-2021-3347) kernel: use-after-free in n_tty_receive_buf_common function in drivers/tty/n_tty.c (CVE-2020-8648) kernel: Improper input validation in some Intel(R) Graphics Drivers (CVE-2020-12363) kernel: Null pointer dereference in some Intel(R) Graphics Drivers (CVE-2020-12364) kernel: Speculation on pointer arithmetic against bpf_context pointer (CVE-2020-27170) 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): lru-add-drain workqueue on RT is allocated without being used (BZ#1894587) kernel-rt: update to the latest RHEL7.9.z source tree (BZ#1953118) lru-add-drain workqueue on RT is allocated without being used (BZ#1894587) kernel-rt: update to the latest RHEL7.9.z source tree (BZ#1953118) SolutionFor details on how to apply this update, which includes the changes described in this advisory, refer to:https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect.

Affected Products

kernel-rt