[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2020-5912)
Errata Announcements for Oracle Linux
el-errata at oss.oracle.com
Tue Nov 10 18:14:03 PST 2020
Synopsis: ELSA-2020-5912 can now be patched using Ksplice
CVEs: CVE-2019-19530 CVE-2020-25211 CVE-2020-26541
Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2020-5912.
More information about this errata can be found at
INSTALLING THE UPDATES
We recommend that all users of Ksplice Uptrack running UEKR4 4.1.12 on
OL6 and OL7 install these updates.
On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any action.
Alternatively, you can install these updates by running:
# /usr/sbin/uptrack-upgrade -y
* Denial-of-service when aborting command in SCSI subsystem.
A null pointer dereference in QLA2XXX Fibre Channel driver when aborting
SCSI command leads to kernel crash. An attacker can exploit this to
cause a denial-of-service.
* CVE-2019-19530: Denial-of-service in USB CDC-ACM probing.
Incorrect reference counting when probing a USB CDC-ACM device could
result in a use-after-free and kernel crash. A local user with the
ability to insert USB devices could use this flaw to crash the system.
* CVE-2020-25211: Denial-of-service in Netfilter due to out-of-bounds memory access.
A flaw in Netfilter framework implementation could lead to
a out-of-bounds memory access. A local user could use this flaw to cause
a system crash and a denial-of-service.
* CVE-2020-26541: Kexec fails to validate loaded kernels against X.509 certificates.
When loading a kexec kernel, the running kernel fails to validate the
binary image being loaded against trusted X.509 signatures. This flaw
could potentially allow a local user with sufficient privileges to load
a malicious binary as the kexec kernel.
* Use-after-free in the Oracle ASM driver when handling a query operation.
Incorrect reference counting when handling a query operation in the Oracle
ASM driver could lead to a use-after-free. A local user with access to an
Oracle ASM filesystem could use this flaw to cause a denial-of-service or
potentially escalate privileges.
Ksplice support is available at ksplice-support_ww at oracle.com.
More information about the El-errata