6.8 - RHSA-2019:1973

Problem Description:

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 impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

2. 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

3. Description:

The kernel-alt packages provide the Linux kernel version 4.x.

Security Fix(es):

* Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

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):

* Pegas1.1 - 7.5-alt s390x kernel oops in update_cfs_rq_h_load (BZ#1557242)

* race of lockd/nfsd inetaddr notifiers with pointers change (BZ#1637541)

* lockd: possible double unregister of inetaddr notifiers (BZ#1637542)

* [Huawei AArch64 7.6 Bug] During the virtual machine migration process, NFS may trigger a system panic. (BZ#1671943)

* RHEL-Alt-7.6 - jit'd java code on power9 ppc64le experiences stack corruption (BZ#1707630)

Users of kernel-alt are advised to upgrade to these updated packages, which fix these bugs.

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

1698757 - CVE-2019-3900 Kernel: vhost_net: infinite loop while receiving packets leads to DoS