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RedHat: RHSA-2020-2522-01 Important: Kernel DoS and Memory Issues

red hat
Calendar Grey June 10, 2020
Dist Redhat Esm H88
Kernel update and security patch release for Red Hat Enterprise Linux 7.7 has been issued, addressing critical vulnerabilities.
An update for kernel is now available for Red Hat Enterprise Linux 7.7 Extended Update Support

Solution

For 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.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (CVE-2017-18595)
* kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)
* Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)
* kernel: denial of service via ioctl call in network tun handling (CVE-2018-7191)
* kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS (CVE-2018-20169)
* kernel: perf_event_open() and execve() race in setuid programs allows a data leak (CVE-2019-3901)
* kernel: brcmfmac frame validation bypass (CVE-2019-9503)
* kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to denial of service (CVE-2019-12382)
* kernel: use-after-free in arch/x86/lib/insn-eval.c (CVE-2019-13233)
* kernel: integer overflow and OOB read in drivers/block/floppy.c (CVE-2019-14283)
* kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service (CVE-2019-15916)
* Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR (CVE-2019-10639)
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: Guest microcode version mismatch on secondary processors(BZ#1814002)
* Realtek 8111, 8112 stop working after upgrading to 3.10.0-1062 (BZ#1814601)
* [mlx5] Crash on reboot while having VF configured and in switchdev mode (BZ#1814800)
* qla2xxx: Urgent driver fix needed. Initiator does not relogin to target after receiving an explicit logout (BZ#1815595)
* High iSCSI read latency resolved by 'tcp: implement coalescing on backlog queue' (BZ#1817498)
* [RHEL7.8][Azure]Commits to resolve high network latency (BZ#1817934)
* NETDEV WATCHDOG: enp3s0 (r8169): transmit queue 0 timed out (BZ#1822541)
* RHEL7: block mq hang of a blk_mq_freeze_queue_wait(), which waits for a zero of a q_usage_counter, which never happens (BZ#1824545)
* Kernel crashes with a message fs/fscache/operation.c:449! (BZ#1826293)
* kernel BUG at fs/fscache/operation.c:70! FS-Cache: 4 == 5 is false - current state is FSCACHE_OP_ST_COMPLETE but should be FSCACHE_OP_CANCELLED in fscache_enqueue_operation (BZ#1839756)

Topics%20covered

Topics Covered

security advisory Red Hat bug fix kernel important update DoS risk network vulnerability

References

https://access.redhat.com/security/cve/CVE-2017-18595 https://access.redhat.com/security/cve/CVE-2018-7191 https://access.redhat.com/security/cve/CVE-2018-20169 https://access.redhat.com/security/cve/CVE-2019-3901 https://access.redhat.com/security/cve/CVE-2019-9503 https://access.redhat.com/security/cve/CVE-2019-10639 https://access.redhat.com/security/cve/CVE-2019-12382 https://access.redhat.com/security/cve/CVE-2019-13233 https://access.redhat.com/security/cve/CVE-2019-14283 https://access.redhat.com/security/cve/CVE-2019-15916 https://access.redhat.com/security/cve/CVE-2019-19768 https://access.redhat.com/security/cve/CVE-2020-10711 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7):
Source: kernel-3.10.0-1062.26.1.el7.src.rpm
noarch: kernel-abi-whitelists-3.10.0-1062.26.1.el7.noarch.rpm kernel-doc-3.10.0-1062.26.1.el7.noarch.rpm
x86_64: bpftool-3.10.0-1062.26.1.el7.x86_64.rpm bpftool-debuginfo-3.10.0-1062.26.1.el7.x86_64.rpm kernel-3.10.0-1062.26.1.el7.x86_64.rpm kernel-debug-3.10.0-1062.26.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.26.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-1062.26.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.26.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-1062.26.1.el7.x86_64.rpm kernel-devel-3.10.0-1062.26.1.el7.x86_64.rpm kernel-headers-3.10.0-1062.26.1.el7.x86_64.rpm kernel-tools-3.10.0-1062.26.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-1062.26.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-1062.26.1.el7.x86_64.rpm perf-3.10.0-1062.26.1.el7.x86_64.rpm perf-debuginfo-3.10.0-1062.26.1.el7.x86_64.rpm python-perf-3.10.0-1062.26.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-1062.26.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7):
x86_64: bpftool-debuginfo-3.10.0-1062.26.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-1062.26.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-1062.26.1.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2522-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2522
Issue date: 2020-06-10

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.7Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat bug fix kernel important update DoS risk network vulnerability

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.7) - ppc64, ppc64le, x86_64

Bugs Fixed

1660385 - CVE-2018-20169 kernel: usb: missing size check in the __usb_get_extra_descriptor() leading to DoS

1701245 - CVE-2019-3901 kernel: perf_event_open() and execve() race in setuid programs allows a data leak

1701842 - CVE-2019-9503 kernel: brcmfmac frame validation bypass

1715554 - CVE-2019-12382 kernel: unchecked kstrdup of fwstr in drm_load_edid_firmware leads to denial of service

1716328 - CVE-2018-7191 kernel: denial of service via ioctl call in network tun handling

1727756 - CVE-2019-13233 kernel: use-after-free in arch/x86/lib/insn-eval.c

1729933 - CVE-2019-10639 Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR

1734243 - CVE-2019-14283 kernel: integer overflow and OOB read in drivers/block/floppy.c

1750813 - CVE-2019-15916 kernel: memory leak in register_queue_kobjects() in net/core/net-sysfs.c leads to denial of service

1758671 - CVE-2017-18595 kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c

1786164 - CVE-2019-19768 kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c

1825116 - CVE-2020-10711 Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic

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