RHSA-2021:0857: Important: kernel-rt security and bug fix update

First published: Tue Mar 16 2021(Updated: )

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.<br>Security Fix(es):<br><li> kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211)</li> <li> kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)</li> <li> kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free (CVE-2020-29661)</li> <li> kernel: malicious USB devices can lead to multiple out-of-bounds write (CVE-2019-19532)</li> <li> kernel: out-of-bounds reads in pinctrl subsystem. (CVE-2020-0427)</li> <li> kernel: use-after-free in i915_ppgtt_close in drivers/gpu/drm/i915/i915_gem_gtt.c (CVE-2020-7053)</li> <li> kernel: performance counters race condition use-after-free (CVE-2020-14351)</li> <li> kernel: Geneve/IPsec traffic may be unencrypted between two Geneve endpoints (CVE-2020-25645)</li> <li> kernel: use-after-free in read in vt_do_kdgkb_ioctl (CVE-2020-25656)</li> <li> kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705)</li> <li> kernel: increase slab leak leads to DoS (CVE-2021-20265)</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> kernel-rt: update to the latest RHEL7.9.z4 source tree (BZ#1917909)</li>

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