RHSA-2019:2730: Important: kernel-rt security and bug fix update
First published: Wed Sep 11 2019(Updated: )
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.<br>Security Fix(es):<br><li> kernel: Memory corruption due to incorrect socket cloning (CVE-2018-9568)</li> <li> kernel: Missing check in fs/inode.c:inode_init_owner() does not clear SGID bit on non-directories for non-members (CVE-2018-13405)</li> <li> kernel: nfs: use-after-free in svc_process_common() (CVE-2018-16884)</li> <li> kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence (CVE-2018-16871)</li> <li> kernel: hw: Spectre SWAPGS gadget vulnerability (CVE-2019-1125)</li> 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.<br>Bug Fix(es):<br><li> Backport TCP follow-up for small buffers [mrg-r] (BZ#1732110)</li> <li> update the MRG 2.5.z 3.10 realtime-kernel sources (BZ#1734469)</li>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-debug | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-debug-debuginfo | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-debug-devel | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-debuginfo | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-devel | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-doc | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-firmware | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-trace | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-trace-debuginfo | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-trace-devel | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-vanilla | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-vanilla-debuginfo | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
| redhat/kernel-rt-vanilla-devel | <3.10.0-693.58.1.rt56.652.el6 | 3.10.0-693.58.1.rt56.652.el6 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1599161
- https://bugzilla.redhat.com/show_bug.cgi?id=1655162
- https://bugzilla.redhat.com/show_bug.cgi?id=1655904
- https://bugzilla.redhat.com/show_bug.cgi?id=1660375
- https://bugzilla.redhat.com/show_bug.cgi?id=1724389
- https://bugzilla.redhat.com/show_bug.cgi?id=1734469
- https://access.redhat.com/security/updates/classification/#important
- https://access.redhat.com/articles/4329821
- https://access.redhat.com/errata/RHSA-2019:2730 (Advisory)
Frequently Asked Questions
What is the severity of RHSA-2019:2730?
RHSA-2019:2730 is classified as a security vulnerability that affects the Real Time Linux kernel and includes critical memory corruption issues.
How do I fix RHSA-2019:2730?
To fix RHSA-2019:2730, you should upgrade to the corrected version of the kernel-rt package listed as 3.10.0-693.58.1.rt56.652.el6.
What is the impact of CVE-2018-9568 in RHSA-2019:2730?
CVE-2018-9568 allows for memory corruption due to improper socket cloning, which can lead to potential system instability and exploitation.
Which packages are affected by RHSA-2019:2730?
RHSA-2019:2730 affects several kernel-rt packages including kernel-rt, kernel-rt-debug, and kernel-rt-vanilla among others.
Is RHSA-2019:2730 applicable to all Red Hat users?
RHSA-2019:2730 is specifically applicable to users of Red Hat Enterprise Linux 6 using the Real Time Linux kernel.
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