drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in kpatch-patch
Name: |
Pufferüberlauf in kpatch-patch |
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ID: |
RHSA-2019:2865-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Mo, 23. September 2019, 16:51 |
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Referenzen: |
https://access.redhat.com/security/vulnerabilities/kernel-vhost
https://access.redhat.com/security/cve/CVE-2019-14835 |
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Applikationen: |
Linux |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
===================================================================== Red Hat Security Advisory
Synopsis: Important: kpatch-patch security update Advisory ID: RHSA-2019:2865-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:2865 Issue date: 2019-09-23 CVE Names: CVE-2019-14835 =====================================================================
1. Summary:
An update for kpatch-patch is now available for RHEL-7.6.
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 Server EUS (v. 7.6) - ppc64le, x86_64
3. Description:
This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel.
Security Fix(es):
* A buffer overflow flaw was found in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host. (CVE-2019-14835)
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.
4. Solution:
Before applying this update, make sure all previously released errata relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1750727 - CVE-2019-14835 kernel: vhost-net: guest to host kernel escape during migration
6. Package List:
Red Hat Enterprise Linux Server EUS (v. 7.6):
Source: kpatch-patch-3_10_0-957_35_1-1-1.el7.src.rpm
ppc64le: kpatch-patch-3_10_0-957_35_1-1-1.el7.ppc64le.rpm kpatch-patch-3_10_0-957_35_1-debuginfo-1-1.el7.ppc64le.rpm
x86_64: kpatch-patch-3_10_0-957_35_1-1-1.el7.x86_64.rpm kpatch-patch-3_10_0-957_35_1-debuginfo-1-1.el7.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2019-14835 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/kernel-vhost
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
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