-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2021:0338-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:0338 Issue date: 2021-02-02 CVE Names: CVE-2020-15436 CVE-2020-35513 ==================================================================== 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 Moderate. 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 fs/block_dev.c (CVE-2020-15436) * kernel: Nfsd failure to clear umask after processing an open or create (CVE-2020-35513) 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): * kernel-rt: update to the latest RHEL7.9.z3 source tree (BZ#1906133) * [kernel-rt] WARNING: CPU: 8 PID: 586 at kernel/sched/core.c:3644 migrate_enable+0x15f/0x210 (BZ#1916123) * [kernel-rt-debug] [ BUG: bad unlock balance detected! ] [RHEL-7.9.z] (BZ#1916130) 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/): 1901168 - CVE-2020-15436 kernel: use-after-free in fs/block_dev.c 1906133 - kernel-rt: update to the latest RHEL7.9.z3 source tree 1911309 - CVE-2020-35513 kernel: Nfsd failure to clear umask after processing an open or create 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-1160.15.2.rt56.1152.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.15.2.rt56.1152.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm Red Hat Enterprise Linux for Real Time (v. 7): Source: kernel-rt-3.10.0-1160.15.2.rt56.1152.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.15.2.rt56.1152.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.15.2.rt56.1152.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.15.2.rt56.1152.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-2020-15436 https://access.redhat.com/security/cve/CVE-2020-35513 https://access.redhat.com/security/updates/classification/#moderate 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 iQIVAwUBYBlBedzjgjWX9erEAQhKChAAhI19BtKklv31X56n6gEK4Kd1ujHpqZ8i zzVHdgYe+/ovvAc3FSSg9yL+1N5gmilAJmQE63USg/FRn70QChpH1zzFJHpepOZ1 bY6zJGqXWJfb7ppZGrOJgRJsGtyez5r9Ft6aJl33ioY/4J1NVJfSnnnLDTaosAFi tl6No/faGvI1OZS6inA7wnQ+JVLeTUiopA5FpMKwb+5nsxVqZ5GAjsP9CS51nEYz vs3VMjci93UTPgA41ywHAc1Q0F3JIKq0sjBo8ewzWlzKyz5wVy4ssa1gI0im2PCI BYSn0wgO74h6IVDULWcp74WYmO8g/tM5sUDN7uKIaTSlK9jh0STnsdka3Jqk9ztg dKzy1BYhACZHd4/2LFwzpiatVVUMFjYUPO9eYZCmzcvgec+AJtedcY8Qwn1e/n7I DD045q2cQj2/ERlpd92iVbwHD7dYQ+pcpgm26Ja5w2PKi74lONPs2gzzOG1uOyHx fkKtlTCGWAr9/S82EVOmofW7RJKr7o2EhU0WrfmRpoUCtmHWjKI9Z761+BapNUJB r7BgqNS4wGCwXlW5h/3QIClRS+fmDu2XnVBmv147nn7gTKTw6Y00wgg3EMiRUdyt uuYvkj0vXqZK2srC34FxL5shK75AUTlCelonB04f1kRjl3W+JtxW8as0joYOt7gv ea/5t+FYR/s=fKGg -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce