-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2021:1739-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:1739 Issue date: 2021-05-18 CVE Names: CVE-2019-19523 CVE-2019-19528 CVE-2020-0431 CVE-2020-11608 CVE-2020-12114 CVE-2020-12362 CVE-2020-12464 CVE-2020-14314 CVE-2020-14356 CVE-2020-15437 CVE-2020-24394 CVE-2020-25212 CVE-2020-25284 CVE-2020-25285 CVE-2020-25643 CVE-2020-25704 CVE-2020-27786 CVE-2020-27835 CVE-2020-28974 CVE-2020-35508 CVE-2021-0342 ==================================================================== 1. Summary: An update for kernel-rt 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 Enterprise Linux Real Time (v. 8) - x86_64 Red Hat Enterprise Linux Real Time for NFV (v. 8) - 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: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362) * kernel: use-after-free caused by a malicious USB device in the drivers/usb/misc/adutux.c driver (CVE-2019-19523) * kernel: use-after-free bug caused by a malicious USB device in the drivers/usb/misc/iowarrior.c driver (CVE-2019-19528) * kernel: possible out of bounds write in kbd_keycode of keyboard.c (CVE-2020-0431) * kernel: DoS by corrupting mountpoint reference counter (CVE-2020-12114) * kernel: use-after-free in usb_sg_cancel function in drivers/usb/core/message.c (CVE-2020-12464) * kernel: buffer uses out of index in ext3/4 filesystem (CVE-2020-14314) * kernel: Use After Free vulnerability in cgroup BPF component (CVE-2020-14356) * kernel: NULL pointer dereference in serial8250_isa_init_ports function in drivers/tty/serial/8250/8250_core.c (CVE-2020-15437) * kernel: umask not applied on filesystem without ACL support (CVE-2020-24394) * kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212) * kernel: incomplete permission checking for access to rbd devices (CVE-2020-25284) * kernel: race condition between hugetlb sysctl handlers in mm/hugetlb.c (CVE-2020-25285) * kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow (CVE-2020-25643) * kernel: perf_event_parse_addr_filter memory (CVE-2020-25704) * kernel: use-after-free in kernel midi subsystem (CVE-2020-27786) * kernel: child process is able to access parent mm through hfi dev file handle (CVE-2020-27835) * kernel: slab-out-of-bounds read in fbcon (CVE-2020-28974) * kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting - ->real_parent (CVE-2020-35508) * kernel: use after free in tun_get_user of tun.c could lead to local escalation of privilege (CVE-2021-0342) * kernel: NULL pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs in drivers/media/usb/gspca/ov519.c (CVE-2020-11608) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.4 Release Notes linked from the References section. 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/): 1783434 - CVE-2019-19523 kernel: use-after-free caused by a malicious USB device in the drivers/usb/misc/adutux.c driver 1783507 - CVE-2019-19528 kernel: use-after-free bug caused by a malicious USB device in the drivers/usb/misc/iowarrior.c driver 1831726 - CVE-2020-12464 kernel: use-after-free in usb_sg_cancel function in drivers/usb/core/message.c 1833445 - CVE-2020-11608 kernel: NULL pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs in drivers/media/usb/gspca/ov519.c 1848652 - CVE-2020-12114 kernel: DoS by corrupting mountpoint reference counter 1853922 - CVE-2020-14314 kernel: buffer uses out of index in ext3/4 filesystem 1868453 - CVE-2020-14356 kernel: Use After Free vulnerability in cgroup BPF component 1869141 - CVE-2020-24394 kernel: umask not applied on filesystem without ACL support 1877575 - CVE-2020-25212 kernel: TOCTOU mismatch in the NFS client code 1879981 - CVE-2020-25643 kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow 1882591 - CVE-2020-25285 kernel: race condition between hugetlb sysctl handlers in mm/hugetlb.c 1882594 - CVE-2020-25284 kernel: incomplete permission checking for access to rbd devices 1886109 - BUG: using smp_processor_id() in preemptible [00000000] code: handler106/3082 [rhel-rt-8.4.0] 1894793 - After configure hugepage and reboot test server, kernel got panic status. 1895961 - CVE-2020-25704 kernel: perf_event_parse_addr_filter memory 1896842 - host locks up when running stress-ng itimers on RT kernel. 1897869 - Running oslat in RT guest, guest kernel shows Call Trace: INFO: task kcompactd0:35 blocked for more than 600 seconds. 1900933 - CVE-2020-27786 kernel: use-after-free in kernel midi subsystem 1901161 - CVE-2020-15437 kernel: NULL pointer dereference in serial8250_isa_init_ports function in drivers/tty/serial/8250/8250_core.c 1901709 - CVE-2020-27835 kernel: child process is able to access parent mm through hfi dev file handle 1902724 - CVE-2020-35508 kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent 1903126 - CVE-2020-28974 kernel: slab-out-of-bounds read in fbcon 1915799 - CVE-2021-0342 kernel: use after free in tun_get_user of tun.c could lead to local escalation of privilege 1919889 - CVE-2020-0431 kernel: possible out of bounds write in kbd_keycode of keyboard.c 1930246 - CVE-2020-12362 kernel: Integer overflow in Intel(R) Graphics Drivers 6. Package List: Red Hat Enterprise Linux Real Time for NFV (v. 8): Source: kernel-rt-4.18.0-305.rt7.72.el8.src.rpm x86_64: kernel-rt-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-core-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-core-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-kvm-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-devel-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-kvm-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-modules-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.rt7.72.el8.x86_64.rpm Red Hat Enterprise Linux Real Time (v. 8): Source: kernel-rt-4.18.0-305.rt7.72.el8.src.rpm x86_64: kernel-rt-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-core-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-core-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-devel-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-modules-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debuginfo-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-devel-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-modules-4.18.0-305.rt7.72.el8.x86_64.rpm kernel-rt-modules-extra-4.18.0-305.rt7.72.el8.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-2019-19523 https://access.redhat.com/security/cve/CVE-2019-19528 https://access.redhat.com/security/cve/CVE-2020-0431 https://access.redhat.com/security/cve/CVE-2020-11608 https://access.redhat.com/security/cve/CVE-2020-12114 https://access.redhat.com/security/cve/CVE-2020-12362 https://access.redhat.com/security/cve/CVE-2020-12464 https://access.redhat.com/security/cve/CVE-2020-14314 https://access.redhat.com/security/cve/CVE-2020-14356 https://access.redhat.com/security/cve/CVE-2020-15437 https://access.redhat.com/security/cve/CVE-2020-24394 https://access.redhat.com/security/cve/CVE-2020-25212 https://access.redhat.com/security/cve/CVE-2020-25284 https://access.redhat.com/security/cve/CVE-2020-25285 https://access.redhat.com/security/cve/CVE-2020-25643 https://access.redhat.com/security/cve/CVE-2020-25704 https://access.redhat.com/security/cve/CVE-2020-27786 https://access.redhat.com/security/cve/CVE-2020-27835 https://access.redhat.com/security/cve/CVE-2020-28974 https://access.redhat.com/security/cve/CVE-2020-35508 https://access.redhat.com/security/cve/CVE-2021-0342 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/ 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 iQIVAwUBYKPwgNzjgjWX9erEAQiOVg//YfXIKUxc84y2aRexvrPHeTQvYkFMktq7 NEhNhHqEZbDUabM5+eKb5hoyG44PmXvQuK1njYjEbpTjQss92U8fekGJZAR9Zbsl WEfVcu/ix/UJOzQj/lp+dKhirBSE/33xgBmSsQI6JQc+xn1AoZC8bOeSqyr7J6Y7 t6I552Llhun9DDUGS8KYAM8PkrK3RGQybAS3S4atTdYd0qk42ZPF7/XqrbI7G4iq 0Oe+ZePj6lN1O7pHV0WYUD2yzLTCZZopmz5847BLBEbGLqPyxlShZ+MFGsWxCOHk tW8lw/nqVt/MNlOXI1tD6P6iFZ6JQYrRU5mGFlvsl3t9NQW60MxmcUNPgtVknXW5 BssBM/r6uLi0yFTTnDRZnv2MCs7fIzzqKXOHozrCvItswG6S8Qs72MaW2EQHAEen m7/fMKWTjt9CQudNCm/FwHLb8O9cYnOZwRiAINomo2B/Fi1b7WlquETSmjgQaQNr RxqtgiNQ98q92gnFgC8pCzxmiKRmHLFJEuxXYVq0O8Ch5i/eC8ExoO7Hqe6kYnJe ZaST6fAtb2bMDcPdborfSIUmuDcYdKFtcEfCuuFZIbBxnL2aJDMw0zen/rmDNQyV lwwXoKanoP5EjKKFMc/zkeHlOInMzeHa/0DIlA9h3kpro5eGN0uOPZvsrlryjC+J iJzkORGWplMű/D -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce