RedHat: RHSA-2021-1288:01 Important: kernel security and bug fix update
Summary
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
Security Fix(es):
* kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an
use-after-free (CVE-2020-29661)
* kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)
* kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)
* kernel: increase slab leak leads to DoS (CVE-2021-20265)
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):
* Enable CI and changelog for GitLab workflow (BZ#1930523)
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-2020-29661 https://access.redhat.com/security/cve/CVE-2021-20265 https://access.redhat.com/security/cve/CVE-2021-27364 https://access.redhat.com/security/cve/CVE-2021-27365 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux Server (v. 6 ELS):
Source:
kernel-2.6.32-754.39.1.el6.src.rpm
i386:
kernel-2.6.32-754.39.1.el6.i686.rpm
kernel-debug-2.6.32-754.39.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.39.1.el6.i686.rpm
kernel-debug-devel-2.6.32-754.39.1.el6.i686.rpm
kernel-debuginfo-2.6.32-754.39.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.39.1.el6.i686.rpm
kernel-devel-2.6.32-754.39.1.el6.i686.rpm
kernel-headers-2.6.32-754.39.1.el6.i686.rpm
perf-2.6.32-754.39.1.el6.i686.rpm
perf-debuginfo-2.6.32-754.39.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.39.1.el6.i686.rpm
noarch:
kernel-abi-whitelists-2.6.32-754.39.1.el6.noarch.rpm
kernel-doc-2.6.32-754.39.1.el6.noarch.rpm
kernel-firmware-2.6.32-754.39.1.el6.noarch.rpm
s390x:
kernel-2.6.32-754.39.1.el6.s390x.rpm
kernel-debug-2.6.32-754.39.1.el6.s390x.rpm
kernel-debug-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
kernel-debug-devel-2.6.32-754.39.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-754.39.1.el6.s390x.rpm
kernel-devel-2.6.32-754.39.1.el6.s390x.rpm
kernel-headers-2.6.32-754.39.1.el6.s390x.rpm
kernel-kdump-2.6.32-754.39.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
kernel-kdump-devel-2.6.32-754.39.1.el6.s390x.rpm
perf-2.6.32-754.39.1.el6.s390x.rpm
perf-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
x86_64:
kernel-2.6.32-754.39.1.el6.x86_64.rpm
kernel-debug-2.6.32-754.39.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-754.39.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-754.39.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-754.39.1.el6.i686.rpm
kernel-debug-devel-2.6.32-754.39.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.39.1.el6.i686.rpm
kernel-debuginfo-2.6.32-754.39.1.el6.x86_64.rpm
kernel-debuginfo-common-i686-2.6.32-754.39.1.el6.i686.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.39.1.el6.x86_64.rpm
kernel-devel-2.6.32-754.39.1.el6.x86_64.rpm
kernel-headers-2.6.32-754.39.1.el6.x86_64.rpm
perf-2.6.32-754.39.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.39.1.el6.i686.rpm
perf-debuginfo-2.6.32-754.39.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.39.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.39.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6 ELS):
i386:
kernel-debug-debuginfo-2.6.32-754.39.1.el6.i686.rpm
kernel-debuginfo-2.6.32-754.39.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-754.39.1.el6.i686.rpm
perf-debuginfo-2.6.32-754.39.1.el6.i686.rpm
python-perf-2.6.32-754.39.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-754.39.1.el6.i686.rpm
s390x:
kernel-debug-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
kernel-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
kernel-debuginfo-common-s390x-2.6.32-754.39.1.el6.s390x.rpm
kernel-kdump-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
perf-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
python-perf-2.6.32-754.39.1.el6.s390x.rpm
python-perf-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-754.39.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-754.39.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-754.39.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-754.39.1.el6.x86_64.rpm
python-perf-2.6.32-754.39.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-754.39.1.el6.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 6Extended Lifecycle 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.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Server (v. 6 ELS) - i386, noarch, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6 ELS) - i386, s390x, x86_64
Bugs Fixed
1906525 - CVE-2020-29661 kernel: locking issue in drivers/tty/tty_jobctrl.c can lead to an use-after-free
1908827 - CVE-2021-20265 kernel: increase slab leak leads to DoS
1930078 - CVE-2021-27365 kernel: heap buffer overflow in the iSCSI subsystem
1930080 - CVE-2021-27364 kernel: out-of-bounds read in libiscsi module