RedHat: RHSA-2021-1379:01 Important: kernel-alt security and bug fix update
Summary
The kernel-alt packages provide the Linux kernel version 4.x.
Security Fix(es):
* kernel: Use after free via PI futex state (CVE-2021-3347)
* kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)
* kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)
* kernel: powerpc: guest can cause DoS on POWER9 KVM hosts (CVE-2020-11669)
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):
* Kernel oops when resizing ext4 filesystem [rhel-alt-7.6.z] (BZ#1790900)
* [ipv6][ipsec]:unregister_netdevice: waiting for lo to become free. Usage
count = 4 (BZ#1920805)
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-2020-11669 https://access.redhat.com/security/cve/CVE-2021-3347 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 for ARM and IBM Power LE (POWER9) Server (v. 7):
Source:
kernel-alt-4.14.0-115.36.1.el7a.src.rpm
aarch64:
kernel-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-debug-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-debug-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-debug-devel-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-devel-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-headers-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-tools-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-tools-libs-4.14.0-115.36.1.el7a.aarch64.rpm
perf-4.14.0-115.36.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
python-perf-4.14.0-115.36.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
noarch:
kernel-abi-whitelists-4.14.0-115.36.1.el7a.noarch.rpm
kernel-doc-4.14.0-115.36.1.el7a.noarch.rpm
ppc64le:
kernel-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-bootwrapper-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-debug-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-debug-debuginfo-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-devel-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-headers-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-tools-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-tools-libs-4.14.0-115.36.1.el7a.ppc64le.rpm
perf-4.14.0-115.36.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.36.1.el7a.ppc64le.rpm
python-perf-4.14.0-115.36.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.36.1.el7a.ppc64le.rpm
s390x:
kernel-4.14.0-115.36.1.el7a.s390x.rpm
kernel-debug-4.14.0-115.36.1.el7a.s390x.rpm
kernel-debug-debuginfo-4.14.0-115.36.1.el7a.s390x.rpm
kernel-debug-devel-4.14.0-115.36.1.el7a.s390x.rpm
kernel-debuginfo-4.14.0-115.36.1.el7a.s390x.rpm
kernel-debuginfo-common-s390x-4.14.0-115.36.1.el7a.s390x.rpm
kernel-devel-4.14.0-115.36.1.el7a.s390x.rpm
kernel-headers-4.14.0-115.36.1.el7a.s390x.rpm
kernel-kdump-4.14.0-115.36.1.el7a.s390x.rpm
kernel-kdump-debuginfo-4.14.0-115.36.1.el7a.s390x.rpm
kernel-kdump-devel-4.14.0-115.36.1.el7a.s390x.rpm
perf-4.14.0-115.36.1.el7a.s390x.rpm
perf-debuginfo-4.14.0-115.36.1.el7a.s390x.rpm
python-perf-4.14.0-115.36.1.el7a.s390x.rpm
python-perf-debuginfo-4.14.0-115.36.1.el7a.s390x.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):
aarch64:
kernel-debug-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-debuginfo-common-aarch64-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-tools-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
kernel-tools-libs-devel-4.14.0-115.36.1.el7a.aarch64.rpm
perf-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
python-perf-debuginfo-4.14.0-115.36.1.el7a.aarch64.rpm
noarch:
kernel-doc-4.14.0-115.36.1.el7a.noarch.rpm
ppc64le:
kernel-debug-debuginfo-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-debug-devel-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-debuginfo-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-debuginfo-common-ppc64le-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-tools-debuginfo-4.14.0-115.36.1.el7a.ppc64le.rpm
kernel-tools-libs-devel-4.14.0-115.36.1.el7a.ppc64le.rpm
perf-debuginfo-4.14.0-115.36.1.el7a.ppc64le.rpm
python-perf-debuginfo-4.14.0-115.36.1.el7a.ppc64le.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-alt is now available for Red Hat Enterprise Linux 7.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 for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, noarch, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le
Bugs Fixed
1824803 - CVE-2020-11669 kernel: powerpc: guest can cause DoS on POWER9 KVM hosts
1922249 - CVE-2021-3347 kernel: Use after free via PI futex state
1930078 - CVE-2021-27365 kernel: heap buffer overflow in the iSCSI subsystem
1930080 - CVE-2021-27364 kernel: out-of-bounds read in libiscsi module