El-errata: New Ksplice updates for UEKR3 3.8.13 on OL6 and OL7 (ELSA-2020-5879)
Synopsis: ELSA-2020-5879 can now be patched using Ksplice
CVEs: CVE-2016-10905 CVE-2017-8924 CVE-2017-8925 CVE-2019-19965 CVE-2019-20054 CVE-2020-14314 CVE-2020-25285
Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2020-5879.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2020-5879.html
INSTALLING THE UPDATES
We recommend that all users of Ksplice Uptrack running UEKR3 3.8.13 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
DESCRIPTION
* CVE-2019-19965: Denial-of-service in SCSI device removal.
A race condition when probing SCSI devices could result in a NULL
pointer dereference and kernel crash. A local user with privileges to
add or remove SCSI devices could use this flaw to crash the system.
Orabug: 30770914
* CVE-2019-20054: Denial-of-service in procfs sysctl removal.
A missing NULL pointer check could result in a NULL pointer derefence
and kernel crash when removing a sysctl table from procfs. A local,
privileged user could use this flaw to crash the system.
Orabug: 30732940
* CVE-2020-14314: Denial-of-service in ext4 file system due to a broken indexing.
A memory out-of-bounds reads could happen in ext4 file system due to
a broken indexing. This flaw could allow a local user to crash the
system and cause a denial-of-service.
Orabug: 31895332
* CVE-2017-8924: Information leak in Digi Edgeport TI callback completion.
An integer underflow in the Digi Edgeport TI USB driver can allow a malicious
USB device to leak the contents of kernel memory to userspace.
Orabug: 31352085
* CVE-2017-8925: Memory leak when opening an Omninet serial driver.
An extra reference on the TTY was taken in the Omninet serial driver on
open, leading to a memory leak. A local, unprivileged user could use this
flaw to exhaust the memory on the system and cause a denial-of-service.
Orabug: 30484762
* CVE-2020-25285: Denial-of-service in sysctls of Linux Memory Manager.
A race condition in sysctls of Linux Kernel Virtual Memory Manager
could lead to NULL pointer dereference. A local attacker could use
this flaw to cause a denial-of-service.
Orabug: 31884241
* CVE-2016-10905: Use-after-free in GFS2 file system.
A logic error when using resource group to keep track of block
allocation in GFS2 filesystem could lead to a use-after-free. A local
attacker could use this flaw to cause a denial-of-service.
Orabug: 30254252
SUPPORT
Ksplice support is available at ksplice-support_ww@oracle.com.
New Ksplice updates for UEKR3 3.8.13 on Oracle Linux 6 and 7 are available.
