7.2 - RHSA-2019:0641

Problem Description:

An update for kernel-rt is now available for Red Hat Enterprise MRG 2.

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 MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64

3. Description:

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: MIDI driver race condition leads to a double-free (CVE-2018-10902)

* kernel: net/rxrpc: overflow in decoding of krb5 principal (CVE-2017-7482)

* kernel: Missing length check of payload in net/sctp/sm_make_chunk.c:_sctp_make_chunk() function allows denial of service (CVE-2018-5803)

* kernel: use-after-free in ntfs_read_locked_inode in the ntfs.ko (CVE-2018-12929)

* kernel: stack-based out-of-bounds write in ntfs_end_buffer_async_read in the ntfs.ko (CVE-2018-12930)

* kernel: stack-based out-of-bounds write in ntfs_attr_find in the ntfs.ko (CVE-2018-12931)

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):

* Remove the NTFS module from the MRG 2.5.x realtime kernel (BZ#1674523)

* update the MRG 2.5.z 3.10 kernel-rt sources (BZ#1674935)

Users of kernel-rt 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/):

1446288 - CVE-2017-7482 kernel: net/rxrpc: overflow in decoding of krb5 principal 1551051 - CVE-2018-5803 kernel: Missing length check of payload in net/sctp/sm_make_chunk.c:_sctp_make_chunk() function allows denial of service 1590720 - CVE-2018-10902 kernel: MIDI driver race condition leads to a double-free 1597831 - CVE-2018-12929 kernel: use-after-free in ntfs_read_locked_inode in the ntfs.ko 1597837 - CVE-2018-12930 kernel: stack-based out-of-bounds write in ntfs_end_buffer_async_read in the ntfs.ko 1597843 - CVE-2018-12931 kernel: stack-based out-of-bounds write in ntfs_attr_find in the ntfs.ko 1674935 - update the MRG 2.5.z 3.10 kernel-rt sources