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RedHat: RHSA-2019-2945-01 Important: Kpatch-Patch Remote DoS Risk

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 impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kpatch-patch security update Advisory ID: RHSA-2019:2945-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:2945 Issue date: 2019-10-01 CVE Names: CVE-2019-9500 ==================================================================== 1. Summary: 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 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 (v. 7) - ppc64le, x86_64 3. Description: 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 detailsabout 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. 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/): 1701224 - CVE-2019-9500 kernel: brcmfmac heap buffer overflow in brcmf_wowl_nd_results 6. 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 7. References: https://access.redhat.com/security/cve/CVE-2019-9500 https://access.redhat.com/security/updates/classification#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPGv1 iQIVAwUBXZMHiNzjgjWX9erEAQiEVw//WV5fR6l3uEJP0l/zuFtppCbwE3uQU+aF MFpuvE+3SeTPCjeFvnMKRgGRJ4LVz/nidlkj20pWgptbNUK9zYL4lIhTCQHavz9f Yf7fLWNLldxzxjTLQWyraedx6yi1h3kiyBL3co7hQMYOOSDbUj+0G6I/Mn0LtJM2 9x/0PwkSqAQfeA2fMQbg5vOeKzFQjTXO8Y1DLWy4FevTWhP7TB65ztDS1+gkoOdO uZ6C5tgvbpGDSMUO3M/Dcxt0Fn/3kXbE0nS61SnUGshwMzUUAZQr1a9l6ZYBQQJ5 tbmeimphTOtGRrmW3y+QglPZp/xdQVmoQksU1ROKLreNQ02yGchJsiEvzaG/mJJP vAXZNhzGcC36nQDIv1Dyu26TwNf629D3LRM6HMu6Vn10z44EhZsFFgaFxhghc8Bq CsybfHhavV6okhtV7aZHd2hL/iqdAeXA7RM+K9vkwuzMoPztXS42vbVFXKqTP7rB qzwzpJpkXPQikncVaGAMbxwMeQTG12U/Z5qVLekjFJp8WiJ1UA3Ycl3U3NNy8VNK /5u5O0FxOIYsJoyn6BP9F5XkH6v63AmEvAzUsiVpVLeqw+D6hT3oMs58FZ7Hj5q0 z0ef3tYu9uVL9Qn/23d4pIPK9+eJ7JP+Umaq0B8Cw8mVD1Blf4iG4WTHdeBHN0fM sZUJxhDs1x4=RYBa -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . A critical security kpatch-patch release resolves remote service disruption and heap corruption vulnerabilities affecting Red Hat Enterprise Linux.. Kpatch-Patch Update, Red Hat Security Advisory, Kernel Live Patch, Remote Denial of Service. . Severity: Important. LinuxSecurity.com Team

Oct 01, 2019 •Important Red Hat