RHSA-2021:2355: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 7.6 Advanced Update Support, Red Hat Enterprise Linux 7.6 Telco Extended Update Support, and Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es):

• kernel: Integer overflow in Intel® Graphics Drivers (CVE-2020-12362)
• kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)
• kernel: malicious USB devices can lead to multiple out-of-bounds write (CVE-2019-19532)
• kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705) 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):
• memcg: mem_cgroup_idr can be updated in an uncoordinated manner which can lead to corruption (BZ#1931901)
• Kernel experiences panic in update_group_power() due to division error even with Bug 1701115 fix (BZ#1961624) Related CVEs:
• CVE-2019-19532: kernel: malicious USB devices can lead to multiple out-of-bounds write
• CVE-2020-12362: kernel: Integer overflow in Intel® Graphics Drivers
• CVE-2020-25211: kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c
• CVE-2020-25705: kernel: ICMP rate limiting can be used for DNS poisoning attack