-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2022:0636-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:0636 Issue date: 2022-02-22 CVE Names: CVE-2021-0920 CVE-2021-4028 CVE-2021-4155 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. 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 EUS (v. 8.2) - aarch64, ppc64le, x86_64 Red Hat Enterprise Linux BaseOS EUS (v. 8.2) - 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: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920) * kernel: use-after-free in RDMA listen() (CVE-2021-4028) * kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155) 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): * bpf: update to v5.7 (BZ#2019883) * Backport leftover migrate_disable BPF related change (BZ#2027687) * assuming atomic context at include/linux/filter.h:597 (BZ#2043427) 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/): 2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen() 2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation 2034813 - CVE-2021-4155 kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL 6. Package List: Red Hat Enterprise Linux BaseOS EUS (v. 8.2): Source: kernel-4.18.0-193.75.1.el8_2.src.rpm aarch64: bpftool-4.18.0-193.75.1.el8_2.aarch64.rpm bpftool-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-core-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-cross-headers-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debug-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debug-core-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debug-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debug-devel-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debug-modules-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debug-modules-extra-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-devel-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-headers-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-modules-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-modules-extra-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-tools-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-tools-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-tools-libs-4.18.0-193.75.1.el8_2.aarch64.rpm perf-4.18.0-193.75.1.el8_2.aarch64.rpm perf-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm python3-perf-4.18.0-193.75.1.el8_2.aarch64.rpm python3-perf-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm noarch: kernel-abi-whitelists-4.18.0-193.75.1.el8_2.noarch.rpm kernel-doc-4.18.0-193.75.1.el8_2.noarch.rpm ppc64le: bpftool-4.18.0-193.75.1.el8_2.ppc64le.rpm bpftool-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-core-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-cross-headers-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debug-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debug-core-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debug-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debug-devel-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debug-modules-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debug-modules-extra-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-devel-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-headers-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-modules-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-modules-extra-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-tools-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-tools-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-tools-libs-4.18.0-193.75.1.el8_2.ppc64le.rpm perf-4.18.0-193.75.1.el8_2.ppc64le.rpm perf-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm python3-perf-4.18.0-193.75.1.el8_2.ppc64le.rpm python3-perf-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm s390x: bpftool-4.18.0-193.75.1.el8_2.s390x.rpm bpftool-debuginfo-4.18.0-193.75.1.el8_2.s390x.rpm kernel-4.18.0-193.75.1.el8_2.s390x.rpm kernel-core-4.18.0-193.75.1.el8_2.s390x.rpm kernel-cross-headers-4.18.0-193.75.1.el8_2.s390x.rpm kernel-debug-4.18.0-193.75.1.el8_2.s390x.rpm kernel-debug-core-4.18.0-193.75.1.el8_2.s390x.rpm kernel-debug-debuginfo-4.18.0-193.75.1.el8_2.s390x.rpm kernel-debug-devel-4.18.0-193.75.1.el8_2.s390x.rpm kernel-debug-modules-4.18.0-193.75.1.el8_2.s390x.rpm kernel-debug-modules-extra-4.18.0-193.75.1.el8_2.s390x.rpm kernel-debuginfo-4.18.0-193.75.1.el8_2.s390x.rpm kernel-debuginfo-common-s390x-4.18.0-193.75.1.el8_2.s390x.rpm kernel-devel-4.18.0-193.75.1.el8_2.s390x.rpm kernel-headers-4.18.0-193.75.1.el8_2.s390x.rpm kernel-modules-4.18.0-193.75.1.el8_2.s390x.rpm kernel-modules-extra-4.18.0-193.75.1.el8_2.s390x.rpm kernel-tools-4.18.0-193.75.1.el8_2.s390x.rpm kernel-tools-debuginfo-4.18.0-193.75.1.el8_2.s390x.rpm kernel-zfcpdump-4.18.0-193.75.1.el8_2.s390x.rpm kernel-zfcpdump-core-4.18.0-193.75.1.el8_2.s390x.rpm kernel-zfcpdump-debuginfo-4.18.0-193.75.1.el8_2.s390x.rpm kernel-zfcpdump-devel-4.18.0-193.75.1.el8_2.s390x.rpm kernel-zfcpdump-modules-4.18.0-193.75.1.el8_2.s390x.rpm kernel-zfcpdump-modules-extra-4.18.0-193.75.1.el8_2.s390x.rpm perf-4.18.0-193.75.1.el8_2.s390x.rpm perf-debuginfo-4.18.0-193.75.1.el8_2.s390x.rpm python3-perf-4.18.0-193.75.1.el8_2.s390x.rpm python3-perf-debuginfo-4.18.0-193.75.1.el8_2.s390x.rpm x86_64: bpftool-4.18.0-193.75.1.el8_2.x86_64.rpm bpftool-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-core-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-cross-headers-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debug-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debug-core-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debug-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debug-devel-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debug-modules-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debug-modules-extra-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-devel-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-headers-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-modules-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-modules-extra-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-tools-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-tools-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-tools-libs-4.18.0-193.75.1.el8_2.x86_64.rpm perf-4.18.0-193.75.1.el8_2.x86_64.rpm perf-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm python3-perf-4.18.0-193.75.1.el8_2.x86_64.rpm python3-perf-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm Red Hat CodeReady Linux Builder EUS (v. 8.2): aarch64: bpftool-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debug-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-tools-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm kernel-tools-libs-devel-4.18.0-193.75.1.el8_2.aarch64.rpm perf-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm python3-perf-debuginfo-4.18.0-193.75.1.el8_2.aarch64.rpm ppc64le: bpftool-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debug-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-tools-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm kernel-tools-libs-devel-4.18.0-193.75.1.el8_2.ppc64le.rpm perf-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm python3-perf-debuginfo-4.18.0-193.75.1.el8_2.ppc64le.rpm x86_64: bpftool-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debug-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-tools-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm kernel-tools-libs-devel-4.18.0-193.75.1.el8_2.x86_64.rpm perf-debuginfo-4.18.0-193.75.1.el8_2.x86_64.rpm python3-perf-debuginfo-4.18.0-193.75.1.el8_2.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-2021-0920 https://access.redhat.com/security/cve/CVE-2021-4028 https://access.redhat.com/security/cve/CVE-2021-4155 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 2022 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYhVgUdzjgjWX9erEAQiXTA/+PqgDIvfXssbYmj8WgSOjv7NJaSkm5vb4 J9qdLGBWzW2cJ0Ix0aQPWeL1co1/o0n4pxSWWwDAUBijnRwiBEWdu86NEHRGFKmE Aq9j8wSHJL9VF7fXdrR2vkgrO1G3BLlFjl+7UV+xDacuzE3cVRc2ONVXgaX+4qXd I2IYBk2Z89DWlazwQMzFfOC+hNqxV5vFBQY7rlz7IDeuwP+Pjlv5gV9ETMcOzE4H yPqpKw0tiTbBSx96QbpELeoJpq60ZhOub64gHq9a282BwZ5cY8Nmjb459op36O9l ktiWjPEyWaYo4YR3q1AR3IEPX46+QdQME0AhU5Rj9TK+UuIlJJvnATxOQhJh4cyk 8gUnhv2eTQek773M+gq5utofO3UPyoJReyQz7+AMOL7uU1VpWKsRjOjuu4yFdDZK Xp64OQm+fz+8GX4Hp7V04imLwAWtO7UBI01TkKcPezdIcMh+zWbVr0bDdD/eTtKj nt3w3BO8NLU9Pd0Zr+e1ct8QB5BgdUdO4RnRoxomG+dw+n7jMCAt3bE6anSMkzqj TM3eTrS49dKnSIXIHlzGsmGvgZF6GYgpoOquC1LhJks9fiRDU8h6KvwQd2mmNzZE j9q6XxY8tC4ed0lScaq+o/WSrXfLk67LB/ZfNX9zdM0dB+itb/ZflWa3JwMz1KIx p6MJ1j29fnM= =0yOK -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce