RHSA-2020:2851: Important: kernel security and bug fix update

First published: Tue Jul 07 2020(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux operating system.<br>Security Fix(es):<br><li> kernel: Count overflow in FUSE request leading to use-after-free issues. (CVE-2019-11487)</li> <li> Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)</li> <li> Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)</li> <li> kernel: denial of service via ioctl call in network tun handling (CVE-2018-7191)</li> <li> kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)</li> <li> kernel: perf_event_open() and execve() race in setuid programs allows a data leak (CVE-2019-3901)</li> <li> kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)</li> <li> kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service (CVE-2019-15916)</li> <li> kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660)</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: hw: provide reporting and microcode mitigation toggle for CVE-2020-0543 / Special Register Buffer Data Sampling (SRBDS) (BZ#1840677)</li>

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