RedHat: RHSA-2020-5656:01 Moderate: kernel security update
Summary
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* kernel: out of bounds write in function i2c_smbus_xfer_emulated in
drivers/i2c/i2c-core-smbus.c (CVE-2017-18551)
* kernel: race condition in smp_task_timedout() and smp_task_done() in
drivers/scsi/libsas/sas_expander.c leads to use-after-free (CVE-2018-20836)
* kernel: out of bounds write in i2c driver leads to local escalation of
privilege (CVE-2019-9454)
* kernel: Denial Of Service in the __ipmi_bmc_register() function in
drivers/char/ipmi/ipmi_msghandler.c (CVE-2019-19046)
* kernel: mounting a crafted ext4 filesystem image, performing some
operations, and unmounting can lead to a use-after-free in ext4_put_super
in fs/ext4/super.c (CVE-2019-19447)
* kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)
* kernel: sg_write function lacks an sg_remove_request call in a certain
failure case (CVE-2020-12770)
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.
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2017-18551 https://access.redhat.com/security/cve/CVE-2018-20836 https://access.redhat.com/security/cve/CVE-2019-9454 https://access.redhat.com/security/cve/CVE-2019-19046 https://access.redhat.com/security/cve/CVE-2019-19447 https://access.redhat.com/security/cve/CVE-2019-20636 https://access.redhat.com/security/cve/CVE-2020-12770 https://access.redhat.com/security/updates/classification/#moderate
Package List
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6):
Source:
kernel-3.10.0-957.65.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-957.65.1.el7.noarch.rpm
kernel-doc-3.10.0-957.65.1.el7.noarch.rpm
x86_64:
bpftool-3.10.0-957.65.1.el7.x86_64.rpm
kernel-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debug-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.65.1.el7.x86_64.rpm
kernel-devel-3.10.0-957.65.1.el7.x86_64.rpm
kernel-headers-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-957.65.1.el7.x86_64.rpm
perf-3.10.0-957.65.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
python-perf-3.10.0-957.65.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6):
x86_64:
kernel-debug-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-957.65.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.6):
Source:
kernel-3.10.0-957.65.1.el7.src.rpm
noarch:
kernel-abi-whitelists-3.10.0-957.65.1.el7.noarch.rpm
kernel-doc-3.10.0-957.65.1.el7.noarch.rpm
ppc64:
kernel-3.10.0-957.65.1.el7.ppc64.rpm
kernel-bootwrapper-3.10.0-957.65.1.el7.ppc64.rpm
kernel-debug-3.10.0-957.65.1.el7.ppc64.rpm
kernel-debug-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
kernel-debug-devel-3.10.0-957.65.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-957.65.1.el7.ppc64.rpm
kernel-devel-3.10.0-957.65.1.el7.ppc64.rpm
kernel-headers-3.10.0-957.65.1.el7.ppc64.rpm
kernel-tools-3.10.0-957.65.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
kernel-tools-libs-3.10.0-957.65.1.el7.ppc64.rpm
perf-3.10.0-957.65.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
python-perf-3.10.0-957.65.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
ppc64le:
kernel-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-bootwrapper-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-debug-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-debug-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-devel-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-headers-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-tools-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-tools-libs-3.10.0-957.65.1.el7.ppc64le.rpm
perf-3.10.0-957.65.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
python-perf-3.10.0-957.65.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
s390x:
kernel-3.10.0-957.65.1.el7.s390x.rpm
kernel-debug-3.10.0-957.65.1.el7.s390x.rpm
kernel-debug-debuginfo-3.10.0-957.65.1.el7.s390x.rpm
kernel-debug-devel-3.10.0-957.65.1.el7.s390x.rpm
kernel-debuginfo-3.10.0-957.65.1.el7.s390x.rpm
kernel-debuginfo-common-s390x-3.10.0-957.65.1.el7.s390x.rpm
kernel-devel-3.10.0-957.65.1.el7.s390x.rpm
kernel-headers-3.10.0-957.65.1.el7.s390x.rpm
kernel-kdump-3.10.0-957.65.1.el7.s390x.rpm
kernel-kdump-debuginfo-3.10.0-957.65.1.el7.s390x.rpm
kernel-kdump-devel-3.10.0-957.65.1.el7.s390x.rpm
perf-3.10.0-957.65.1.el7.s390x.rpm
perf-debuginfo-3.10.0-957.65.1.el7.s390x.rpm
python-perf-3.10.0-957.65.1.el7.s390x.rpm
python-perf-debuginfo-3.10.0-957.65.1.el7.s390x.rpm
x86_64:
bpftool-3.10.0-957.65.1.el7.x86_64.rpm
kernel-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debug-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debug-devel-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.65.1.el7.x86_64.rpm
kernel-devel-3.10.0-957.65.1.el7.x86_64.rpm
kernel-headers-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-libs-3.10.0-957.65.1.el7.x86_64.rpm
perf-3.10.0-957.65.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
python-perf-3.10.0-957.65.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 7.6):
ppc64:
kernel-debug-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
kernel-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
kernel-debuginfo-common-ppc64-3.10.0-957.65.1.el7.ppc64.rpm
kernel-tools-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
kernel-tools-libs-devel-3.10.0-957.65.1.el7.ppc64.rpm
perf-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
python-perf-debuginfo-3.10.0-957.65.1.el7.ppc64.rpm
ppc64le:
kernel-debug-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-debug-devel-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-debuginfo-common-ppc64le-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-tools-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
kernel-tools-libs-devel-3.10.0-957.65.1.el7.ppc64le.rpm
perf-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
python-perf-debuginfo-3.10.0-957.65.1.el7.ppc64le.rpm
x86_64:
kernel-debug-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-957.65.1.el7.x86_64.rpm
perf-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-957.65.1.el7.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for kernel is now available for Red Hat Enterprise Linux 7.6Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, x86_64
Bugs Fixed
1707796 - CVE-2018-20836 kernel: race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c leads to use-after-free
1757368 - CVE-2017-18551 kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c
1774988 - CVE-2019-19046 kernel: Denial Of Service in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c
1781679 - CVE-2019-19447 kernel: mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c
1818818 - CVE-2019-9454 kernel: out of bounds write in i2c driver leads to local escalation of privilege
1824059 - CVE-2019-20636 kernel: out-of-bounds write via crafted keycode table
1834845 - CVE-2020-12770 kernel: sg_write function lacks an sg_remove_request call in a certain failure case