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Red Hat Enterprise Linux 8 RHSA-2021:0003-01 Important Buffer Overflow

An update for kernel is now available for Red Hat Enterprise Linux 8. 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: kernel security and bug fix update Advisory ID: RHSA-2021:0003-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0003 Issue date: 2021-01-04 CVE Names: CVE-2020-25211 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 8. 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 CodeReady Linux Builder (v. 8) - aarch64, ppc64le, x86_64 Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211) 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): * avoid flush_backlog IPI for isolated CPUs by configuring RPS cpumask (BZ#1883314) * rngd consumes 100% cpu on rhel-8.3 system in fips mode (BZ#1886192) * RHEL8.1 - Random memory corruption may occur due to incorrect tlbflush (BZ#1899208) * fipsmode boot is broken after adding extrng (BZ#1899584) * pmtu of 1280 for vxlan as bridge port won't work (BZ#1902082) * rpc task loop with kworker spinning at 100% CPU for 10 minutes when umount an NFS 4.x share with sec=krb5 triggered by unmount of the NFS share (BZ#1907667) 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/): 1877571 - CVE-2020-25211 kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c 6. Package List: Red Hat Enterprise Linux BaseOS (v.8): Source: kernel-4.18.0-240.10.1.el8_3.src.rpm aarch64: bpftool-4.18.0-240.10.1.el8_3.aarch64.rpm bpftool-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-core-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-cross-headers-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debug-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debug-core-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debug-devel-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debug-modules-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debug-modules-extra-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-devel-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-headers-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-modules-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-modules-extra-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-tools-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-tools-libs-4.18.0-240.10.1.el8_3.aarch64.rpm perf-4.18.0-240.10.1.el8_3.aarch64.rpm perf-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm python3-perf-4.18.0-240.10.1.el8_3.aarch64.rpm python3-perf-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm noarch: kernel-abi-whitelists-4.18.0-240.10.1.el8_3.noarch.rpm kernel-doc-4.18.0-240.10.1.el8_3.noarch.rpm ppc64le: bpftool-4.18.0-240.10.1.el8_3.ppc64le.rpm bpftool-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-core-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-cross-headers-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debug-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debug-core-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debug-devel-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debug-modules-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debug-modules-extra-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-devel-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-headers-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-modules-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-modules-extra-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-tools-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-tools-libs-4.18.0-240.10.1.el8_3.ppc64le.rpm perf-4.18.0-240.10.1.el8_3.ppc64le.rpm perf-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm python3-perf-4.18.0-240.10.1.el8_3.ppc64le.rpm python3-perf-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm s390x: bpftool-4.18.0-240.10.1.el8_3.s390x.rpm bpftool-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm kernel-4.18.0-240.10.1.el8_3.s390x.rpm kernel-core-4.18.0-240.10.1.el8_3.s390x.rpm kernel-cross-headers-4.18.0-240.10.1.el8_3.s390x.rpm kernel-debug-4.18.0-240.10.1.el8_3.s390x.rpm kernel-debug-core-4.18.0-240.10.1.el8_3.s390x.rpm kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm kernel-debug-devel-4.18.0-240.10.1.el8_3.s390x.rpm kernel-debug-modules-4.18.0-240.10.1.el8_3.s390x.rpm kernel-debug-modules-extra-4.18.0-240.10.1.el8_3.s390x.rpm kernel-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm kernel-debuginfo-common-s390x-4.18.0-240.10.1.el8_3.s390x.rpm kernel-devel-4.18.0-240.10.1.el8_3.s390x.rpm kernel-headers-4.18.0-240.10.1.el8_3.s390x.rpm kernel-modules-4.18.0-240.10.1.el8_3.s390x.rpm kernel-modules-extra-4.18.0-240.10.1.el8_3.s390x.rpm kernel-tools-4.18.0-240.10.1.el8_3.s390x.rpm kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm kernel-zfcpdump-4.18.0-240.10.1.el8_3.s390x.rpm kernel-zfcpdump-core-4.18.0-240.10.1.el8_3.s390x.rpm kernel-zfcpdump-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm kernel-zfcpdump-devel-4.18.0-240.10.1.el8_3.s390x.rpm kernel-zfcpdump-modules-4.18.0-240.10.1.el8_3.s390x.rpm kernel-zfcpdump-modules-extra-4.18.0-240.10.1.el8_3.s390x.rpm perf-4.18.0-240.10.1.el8_3.s390x.rpm perf-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm python3-perf-4.18.0-240.10.1.el8_3.s390x.rpm python3-perf-debuginfo-4.18.0-240.10.1.el8_3.s390x.rpm x86_64: bpftool-4.18.0-240.10.1.el8_3.x86_64.rpm bpftool-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-core-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-cross-headers-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debug-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debug-core-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debug-devel-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debug-modules-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debug-modules-extra-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-devel-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-headers-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-modules-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-modules-extra-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-tools-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-tools-libs-4.18.0-240.10.1.el8_3.x86_64.rpm perf-4.18.0-240.10.1.el8_3.x86_64.rpm perf-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm python3-perf-4.18.0-240.10.1.el8_3.x86_64.rpm python3-perf-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm Red Hat CodeReady Linux Builder (v.8): aarch64: bpftool-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm kernel-tools-libs-devel-4.18.0-240.10.1.el8_3.aarch64.rpm perf-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm python3-perf-debuginfo-4.18.0-240.10.1.el8_3.aarch64.rpm ppc64le: bpftool-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm kernel-tools-libs-devel-4.18.0-240.10.1.el8_3.ppc64le.rpm perf-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm python3-perf-debuginfo-4.18.0-240.10.1.el8_3.ppc64le.rpm x86_64: bpftool-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debug-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-tools-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm kernel-tools-libs-devel-4.18.0-240.10.1.el8_3.x86_64.rpm perf-debuginfo-4.18.0-240.10.1.el8_3.x86_64.rpm python3-perf-debuginfo-4.18.0-240.10.1.el8_3.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-2020-25211 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 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPGv1 iQIVAwUBX/LeDtzjgjWX9erEAQjzWA/8CCQwJRJRvQzpR2PwPYgTvGCTedM23DVv xm9yarI6JfvYZn5b83Z1j5+VvYW5jDfKiHCY+NAsolSYlZXYqOcw2t8HRoKuzSua XHshH8vReO1RMrWz2ubWY3CTJlVA5g59BzYid/8jWN+WskB98+AIW32x04DxOu9U UKVl4AyqW7zq3BVOYQjuG/IGLOzX9D/qAqXewj/cgAHCURwq6U2MjtRoGP7njyQ4 xbNGZ2r12sS0iLu4To2P4pqdu/OwxemGnHG+JphUdHYilC+2ePXPxXCaj1h1z/aO GG4EiEsz/QMyFPf4ESegWpBoaBOFGYuDLp0RbSaGgNt9ZVyKCCrnT6IbvgwUL0+r WrU7CcsAPrQW3ICFFMwscrYvaYryEasoL+ZJ7WuRZU0WrqhiKdSUIESGVy6kNOPI 7rj3XJY/BILwvHEYGGd6VoAkaQyxVaZZv/V3qvdu8+gEAOEnXCkid8rxKPqyG/U5 GipbqyahQypk8m7EGXCgE7BlJbAoiU2zAAGsCxFD3snYxzS8qW4wCJnCID1iAq4K 5GEzrvWuzovkNBiEn+hfQTDz0yhDl8R3j8RmQgGtoKDQl/w3IWtD1D6bR1uJxwOq xGgmmdQX+FlaPYkPJas1DmigcXBQnDaS47hGsbK3UGjNKe31ht7Niw35C6/Q3QnZ RrOHPCHT/NE=Ua82 -----END PGP SIGNATURE----- -- RHSA-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . Keep updated on the critical kernel security patch for CentOS Stream, addressing local memory corruption vulnerabilities.. Red Hat Enterprise Linux,kernel update,local buffer overflow,security advisory. . Severity: Important. LinuxSecurity.com Team

Jan 04, 2021 •Important Red Hat