RedHat: RHSA-2019-2945:01 Important: kpatch-patch security update
Summary
This is a kernel live patch module which is automatically loaded by the RPM
post-install script to modify the code of a running kernel.
Security fix(es):
* If the Wake-up on Wireless LAN functionality is configured in the
brcmfmac driver, which only works with Broadcom FullMAC chipsets, a
malicious event frame can be constructed to trigger a heap buffer overflow
in the brcmf_wowl_nd_results() function. This vulnerability can be
exploited by compromised chipsets to compromise the host, or when used in
combination with another brcmfmac driver flaw (CVE-2019-9503), can be used
remotely. This can result in a remote denial of service (DoS). Due to the
nature of the flaw, a remote privilege escalation cannot be fully ruled
out. (CVE-2019-9500)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgements, and other related information, refer to the CVE
page(s) listed in the References section.
Summary
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
References
https://access.redhat.com/security/cve/CVE-2019-9500 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux Server (v. 7):
Source:
kpatch-patch-3_10_0-1062-1-2.el7.src.rpm
ppc64le:
kpatch-patch-3_10_0-1062-1-2.el7.ppc64le.rpm
kpatch-patch-3_10_0-1062-debuginfo-1-2.el7.ppc64le.rpm
x86_64:
kpatch-patch-3_10_0-1062-1-2.el7.x86_64.rpm
kpatch-patch-3_10_0-1062-debuginfo-1-2.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/
Topic
An update for kpatch-patch is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Server (v. 7) - ppc64le, x86_64
Bugs Fixed
1701224 - CVE-2019-9500 kernel: brcmfmac heap buffer overflow in brcmf_wowl_nd_results
