-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2021:4779-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4779 Issue date: 2021-11-23 CVE Names: CVE-2020-36385 ===================================================================== 1. Summary: An update for kernel-rt 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 for Real Time (v. 7) - noarch, x86_64 Red Hat Enterprise Linux for Real Time for NFV (v. 7) - noarch, x86_64 3. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free (CVE-2020-36385) 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): * BUG: scheduling while atomic: bz722926/3905/0x00000002 regresion case with zram (BZ#1833860) * kernel-rt: update to the latest RHEL7.9.z10 source tree (BZ#2009077) 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/): 1833860 - BUG: scheduling while atomic: bz722926/3905/0x00000002 regresion case with zram 1974319 - CVE-2020-36385 kernel: use-after-free in drivers/infiniband/core/ucma.c ctx use-after-free 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-1160.49.1.rt56.1189.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.49.1.rt56.1189.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm Red Hat Enterprise Linux for Real Time (v. 7): Source: kernel-rt-3.10.0-1160.49.1.rt56.1189.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.49.1.rt56.1189.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.49.1.rt56.1189.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.49.1.rt56.1189.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-2020-36385 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: GnuPG v1 iQIVAwUBYZ1R79zjgjWX9erEAQgyzQ/8CZ4tG9fD+6tiAgO+nxyCx9xydEUeZ66g IRD7Dmn2BlyA/bn9jSeqhqcmm6Wx61jhJcZfv4qKc80fTOhDhAtBFsMg82pV+mdJ nYMfnd3Em6OzsrMlPpnKEg8qKkPlcW4k2F15Ifj4A/BwLwcXdQX1ojmvsmd1fU+n lycvjH6ASqgQSVY9xhZVirTd7PtO/a+p8JJc2Kc9h/xPqeDR/4/G92qLMjTV8YAe PfDEQDsU1S0X6WS/oRucTvXPvX2619JJU0uFCV8I3EtqigmiFy+dZZ8eXXarZAqn mM/kn2rBEuIi7BHVlQ9oqAy1JLngBZBBUQeoXPRP1iYgAwTxxVauDu0kdyNvUUFO CqaQWoiAjpgfkSUG548Dojcdoj1m11DgHuFqd7W6kbOcuc+gyub2p1mdm8lSnPnS tpFAg4fvpbums1RzdbdEHoh/a9AWwW7YH7dCU+4AACseBWbyN84sTR0Z/eBucOOc 2kF999brYvWXgKG7G622eAajfN6C+1dOsh2DIasbVn4PlXB5MO6CeDLzSz0Uovf9 o6bi2NDBovf7W4av6mhGDnNxPkY25vhzB7vqTpRq82qdiEtbZQr0W7Rtd+oVdsfE PvJgMXmaN73IgV4oIm4N4jZVHcuMmPHBtTOZA2Epxpq9ziGXlbTLadxMysuI4+hL BgXssEOc+cY= =HgZe -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce