-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2022:0622-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:0622 Issue date: 2022-02-22 CVE Names: CVE-2020-0465 CVE-2020-0466 CVE-2021-0920 CVE-2021-3564 CVE-2021-3573 CVE-2021-3752 CVE-2021-4155 CVE-2022-0330 CVE-2022-22942 ===================================================================== 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 eventpoll.c may lead to escalation of privilege (CVE-2020-0466) * kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920) * kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL (CVE-2021-4155) * kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330) * kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942) * kernel: out of bounds write in hid-multitouch.c may lead to escalation of privilege (CVE-2020-0465) * kernel: double free in bluetooth subsystem when the HCI device initialization fails (CVE-2021-3564) * kernel: use-after-free in function hci_sock_bound_ioctl() (CVE-2021-3573) * kernel: possible use-after-free in bluetooth module (CVE-2021-3752) 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.z12 source tree (BZ#2039101) 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/): 1920471 - CVE-2020-0465 kernel: out of bounds write in hid-multitouch.c may lead to escalation of privilege 1920480 - CVE-2020-0466 kernel: use after free in eventpoll.c may lead to escalation of privilege 1964139 - CVE-2021-3564 kernel: double free in bluetooth subsystem when the HCI device initialization fails 1966578 - CVE-2021-3573 kernel: use-after-free in function hci_sock_bound_ioctl() 1999544 - CVE-2021-3752 kernel: possible use-after-free in bluetooth module 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 2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush 2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-1160.59.1.rt56.1200.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.59.1.rt56.1200.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-kvm-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm Red Hat Enterprise Linux for Real Time (v. 7): Source: kernel-rt-3.10.0-1160.59.1.rt56.1200.el7.src.rpm noarch: kernel-rt-doc-3.10.0-1160.59.1.rt56.1200.el7.noarch.rpm x86_64: kernel-rt-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debug-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-devel-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-trace-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-1160.59.1.rt56.1200.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-1160.59.1.rt56.1200.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-2020-0465 https://access.redhat.com/security/cve/CVE-2020-0466 https://access.redhat.com/security/cve/CVE-2021-0920 https://access.redhat.com/security/cve/CVE-2021-3564 https://access.redhat.com/security/cve/CVE-2021-3573 https://access.redhat.com/security/cve/CVE-2021-3752 https://access.redhat.com/security/cve/CVE-2021-4155 https://access.redhat.com/security/cve/CVE-2022-0330 https://access.redhat.com/security/cve/CVE-2022-22942 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 iQIVAwUBYhVgkdzjgjWX9erEAQikwBAAnPYpxAyXhyWEA62sPNNz/2ZSYC3ALFNS oIr7zlp9OnmH54ugrSaCeeqIri35G4YyX3XWVdRlvMuL7aM7lptcON9xq81m4e30 jMzhQdu+CNj2KykMxW7IkvwUDPa8c3CU3zI39wSKvTsWy8QhYKd3mQqewjqaIUQW rPU2q4GNiShiN6299JzlxiM7zkz1cukGO5T+9mOQzY4rJrU8rjpgGe0dTTdVy5To ZShcpc/W/G0RJziwYq3Z6qajtALWhShHOysu60Q03BY+hJW4h4gj8ensjg0HpFth NwzG2tBTytS4/8sFBj6UcRB6BkM7vVCLXTE2n0LUgnx6tg20k9asbcZzUQiF6bJ5 qF/OuZ81qjZOrgEtZ18kNHNPuoxhBAEHRG4tiK0IZxi1R9J+5ln0dv5DcESO4DGf 5JW+h4Qy7giBh9ugCVje00sYZf0QugBrmEE7NtwyFlBRP+lE3vnqP+ZdGDyovyfV 91AlMv04yW+R00w9MZ0LrbmGpc4gojbYSuer5YMgQi9hBsPF2FV2cpRQTfEIapav omN88Kza8wgAt/t2Jh0OaOp1/2vVJCJw0WNZrnnPFQusUyjE0C2hoH96j8M42DRr HaSFb6bv0rnWuQH0ZG9B44DckOE50TBtK80ysmB/SsJ/oNca5GHcoTBW1gR8dVJC FPgNRhrQRHk= =V2+v -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce