# CVE-2020-16166: kernel-tools: The kernel packages contain the Linux kernel, the core of any Linux operating system.  Security Fix(es):  * kernel: i...

CVE-2020-16166 is fixed in 45 products on 1 platform, first by ELSA-2020-5848, released September 14, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-16166
- Priority: Routine
- CVSS: 3.7 (Moderate)
- EPSS: 0.0523
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 14, 2020

## Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.  Security Fix(es):  * kernel: information exposure in drivers/char/random.c and kernel/time/timer.c (CVE-2020-16166)  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):  * Backport upstream OVS performance patch fix (BZ#1879935)  * Sleeping or scheduling after sched_cpu_dying() led to "scheduling while atomic" and BUG at kernel/cpu.c:907! (BZ#1880080)  * [conntrack] udp packet reverse NAT occasionally fail when race condition request combination with the DNAT load balancing rules (BZ#1882094)  * Unexpected fragmentation needed error, OpenShift 4, OVS, VXLAN, GSO, Azure (BZ#1885766)  * Unable to attach VLAN-based logical networks to a bond (BZ#1886017)  * NFS server with krb5p fails in FIPS mode: context_derive_keys_new: Error 22 deriving initiator_seal key (BZ#1886189)  * XFS: reflinked file data corruption (BZ#1886895)  * [HPE 8.3 Bug] Kdump bootup failure caused by an amd iommu commit for Rhel8.3 BetaOS on DL325Gen10 (BZ#1888113)  * dm: fix bio splitting and its bio completion order for regular IO (BZ#1890233)  * geneve: add transport ports in route lookup for geneve (BZ#1891818)  * HRTICK not armed in specific cases with SCHED_DEADLINE (BZ#1894073)  * PM/swap Speed up hibernation by batching requests (BZ#1894629)  * RHEL8.1 - ibmveth is producing TX errors over VXLAN when large send (TSO) is enabled (-> related to Red Hat bug 1816254 - OCP 4.3 - Authentication clusteroperator is in unknown state on POWER 9 servers") (BZ#1896299)  * RHEL8.2 - mm/gup: fix gup_fast with dynamic page table folding (BZ#1896351)  * [Azure][RHEL-8]TX/RX packets stop increasing after hibernation/resume in VM with CX4 VF NIC (BZ#1896433)  * [Azure][RHEL-8]VM hangs after hibernation/resume if the VM has SRIOV NIC and has been deallocated (BZ#1896434)  * [Azure] hv_irq_unmask() failed: 0x5 after resume from hibernation in NV6 size (BZ#1896435)  * block layer: update to upstream v5.8 (BZ#1896787)  * [Regression] RHEL8.2 zstream - Undetected Data corruption in MPI workloads that use VSX for reductions on POWER9 DD2.1 systems (BZ#1897278)  * Incorrect system time reported through the CPU Accounting statistics (BZ#1897716)  * debug kernel reports BUG: sleeping function called from invalid context at mm/slab.h:496 in aws t4g instances (BZ#1898758)  * ARO: excessive pod memory allocation causes node lockup (BZ#1901547)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | bpftool ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-abi-whitelists RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-abi-whitelists ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-core RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-core ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-cross-headers ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-debug RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-debug ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-debug-core RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-debug-core ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-debug-devel RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-debug-devel ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-debug-modules RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-debug-modules ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-debug-modules-extra RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-debug-modules-extra ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-devel RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-devel ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-doc RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-doc ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-headers ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-modules RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-modules ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-modules-extra RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-modules-extra ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-rt RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-core RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-debug RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-debug-core RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-debug-devel RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-debug-kvm RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-debug-modules RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-debug-modules-extra RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-devel RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-kvm RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-modules RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-rt-modules-extra RHEL 8 | 0:4.18.0-240.8.1.rt7.62.el8_3 | [RHSA-2020:5506](https://patchblox.com/security/data/fix/linux/rhsa-2020-5506.md) | Dec 15, 2020 |
| Linux | kernel-tools RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-tools ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-tools-libs RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-tools-libs ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-tools-libs-devel RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-tools-libs-devel ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |
| Linux | kernel-uek ol 8 | 0:5.4.17-2011.6.2.el8uek | [ELSA-2020-5848](https://patchblox.com/security/data/fix/linux/elsa-2020-5848.md) | Sep 14, 2020 |
| Linux | kernel-uek-debug ol 8 | 0:5.4.17-2011.6.2.el8uek | [ELSA-2020-5848](https://patchblox.com/security/data/fix/linux/elsa-2020-5848.md) | Sep 14, 2020 |
| Linux | kernel-uek-debug-devel ol 8 | 0:5.4.17-2011.6.2.el8uek | [ELSA-2020-5848](https://patchblox.com/security/data/fix/linux/elsa-2020-5848.md) | Sep 14, 2020 |
| Linux | kernel-uek-devel ol 8 | 0:5.4.17-2011.6.2.el8uek | [ELSA-2020-5848](https://patchblox.com/security/data/fix/linux/elsa-2020-5848.md) | Sep 14, 2020 |
| Linux | kernel-uek-doc ol 8 | 0:5.4.17-2011.6.2.el8uek | [ELSA-2020-5848](https://patchblox.com/security/data/fix/linux/elsa-2020-5848.md) | Sep 14, 2020 |
| Linux | kernel-uek-tools ol 8 | 0:5.4.17-2011.6.2.el7uek | [ELSA-2020-5848](https://patchblox.com/security/data/fix/linux/elsa-2020-5848.md) | Sep 14, 2020 |
| Linux | kernel-uek-tools-libs ol 8 | 0:5.4.17-2011.6.2.el7uek | [ELSA-2020-5848](https://patchblox.com/security/data/fix/linux/elsa-2020-5848.md) | Sep 14, 2020 |
| Linux | kernel-zfcpdump RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-zfcpdump-core RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-zfcpdump-devel RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-zfcpdump-modules RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | kernel-zfcpdump-modules-extra RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | perf RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | perf ol 8 | 0:5.4.17-2011.6.2.el7uek | [ELSA-2020-5848](https://patchblox.com/security/data/fix/linux/elsa-2020-5848.md) | Sep 14, 2020 |
| Linux | python-perf ol 8 | 0:5.4.17-2011.6.2.el7uek | [ELSA-2020-5848](https://patchblox.com/security/data/fix/linux/elsa-2020-5848.md) | Sep 14, 2020 |
| Linux | python3-perf RHEL 8 | 0:4.18.0-240.8.1.el8_3 | [RHSA-2020:5473](https://patchblox.com/security/data/fix/linux/rhsa-2020-5473.md) | Dec 15, 2020 |
| Linux | python3-perf ol 8 | 0:4.18.0-240.8.1.el8_3 | [ELSA-2020-5473](https://patchblox.com/security/data/fix/linux/elsa-2020-5473.md) | Dec 17, 2020 |

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