-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2022:7444-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2022:7444 Issue date: 2022-11-08 CVE Names: CVE-2020-36516 CVE-2020-36558 CVE-2021-3640 CVE-2021-30002 CVE-2022-0168 CVE-2022-0617 CVE-2022-0854 CVE-2022-1016 CVE-2022-1048 CVE-2022-1055 CVE-2022-1184 CVE-2022-1852 CVE-2022-2078 CVE-2022-2586 CVE-2022-2639 CVE-2022-2938 CVE-2022-20368 CVE-2022-21499 CVE-2022-24448 CVE-2022-26373 CVE-2022-27950 CVE-2022-28390 CVE-2022-28893 CVE-2022-29581 CVE-2022-36946 ==================================================================== 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 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 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): * off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516) * Race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer dereference (CVE-2020-36558) * use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640) * Memory leak for large arguments in video_usercopy function in drivers/media/v4l2-core/v4l2-ioctl.c (CVE-2021-30002) * smb2_ioctl_query_info NULL Pointer Dereference (CVE-2022-0168) * NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617) * swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854) * Uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016) * Race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048) * use-after-free in tc_new_tfilter() in net/sched/cls_api.c (CVE-2022-1055) * use-after-free and memory errors in ext4 when mounting and operating on a corrupted image (CVE-2022-1184) * NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852) * buffer overflow in nft_set_desc_concat_parse() (CVE-2022-2078) * nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586) * openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639) * use-after-free when psi trigger is destroyed while being polled (CVE-2022-2938) * net/packet: slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368) * possible to use the debugger to write zero into a location of choice (CVE-2022-21499) * Post-barrier Return Stack Buffer Predictions (CVE-2022-26373) * Memory leak in drivers/hid/hid-elo.c (CVE-2022-27950) * Double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390) * Use after free in SUNRPC subsystem (CVE-2022-28893) * use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581) * DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946) * nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448) 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 8.7 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/): 1946279 - CVE-2021-30002 kernel: memory leak for large arguments in video_usercopy function in drivers/media/v4l2-core/v4l2-ioctl.c 1980646 - CVE-2021-3640 kernel: use-after-free vulnerability in function sco_sock_sendmsg() 2037386 - CVE-2022-0168 kernel: smb2_ioctl_query_info NULL pointer dereference 2037769 - Softirq hrtimers are being placed on the per-CPU softirq clocks on isolcpu?s. 2051444 - CVE-2022-24448 kernel: nfs_atomic_open() returns uninitialized data instead of ENOTDIR 2053632 - CVE-2022-0617 kernel: NULL pointer dereference in udf_expand_file_adinicbdue() during writeback 2058395 - CVE-2022-0854 kernel: swiotlb information leak with DMA_FROM_DEVICE 2059928 - CVE-2020-36516 kernel: off-path attacker may inject data or terminate victim's TCP session 2066614 - CVE-2022-1016 kernel: uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM 2066706 - CVE-2022-1048 kernel: race condition in snd_pcm_hw_free leading to use-after-free 2069408 - CVE-2022-27950 kernel: memory leak in drivers/hid/hid-elo.c 2070205 - CVE-2022-1184 kernel: use-after-free and memory errors in ext4 when mounting and operating on a corrupted image 2070220 - CVE-2022-1055 kernel: use-after-free in tc_new_tfilter() in net/sched/cls_api.c 2073064 - CVE-2022-28390 kernel: double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c 2074208 - CVE-2022-28893 kernel: use after free in SUNRPC subsystem 2084183 - CVE-2022-21499 kernel: possible to use the debugger to write zero into a location of choice 2084479 - CVE-2022-2639 kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() 2088021 - CVE-2022-29581 kernel: use-after-free due to improper update of reference count in net/sched/cls_u32.c 2089815 - CVE-2022-1852 kernel: NULL pointer dereference in x86_emulate_insn may lead to DoS 2096178 - CVE-2022-2078 kernel: buffer overflow in nft_set_desc_concat_parse() 2112693 - CVE-2020-36558 kernel: race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer dereference 2114878 - CVE-2022-2586 kernel: nf_tables cross-table potential use-after-free may lead to local privilege escalation 2115065 - CVE-2022-26373 hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions 2115278 - CVE-2022-36946 kernel: DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c 2120175 - CVE-2022-2938 kernel: use-after-free when psi trigger is destroyed while being polled 2123695 - CVE-2022-20368 kernel: net/packet: slab-out-of-bounds access in packet_recvmsg() 6. Package List: Red Hat Enterprise Linux Real Time for NFV (v. 8): Source: kernel-rt-4.18.0-425.3.1.rt7.213.el8.src.rpm x86_64: kernel-rt-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-core-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-core-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-devel-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-kvm-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-modules-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debuginfo-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-devel-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-kvm-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-modules-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-modules-extra-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm Red Hat Enterprise Linux Real Time (v. 8): Source: kernel-rt-4.18.0-425.3.1.rt7.213.el8.src.rpm x86_64: kernel-rt-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-core-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-core-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-devel-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-modules-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debuginfo-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-devel-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-modules-4.18.0-425.3.1.rt7.213.el8.x86_64.rpm kernel-rt-modules-extra-4.18.0-425.3.1.rt7.213.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-2020-36516 https://access.redhat.com/security/cve/CVE-2020-36558 https://access.redhat.com/security/cve/CVE-2021-3640 https://access.redhat.com/security/cve/CVE-2021-30002 https://access.redhat.com/security/cve/CVE-2022-0168 https://access.redhat.com/security/cve/CVE-2022-0617 https://access.redhat.com/security/cve/CVE-2022-0854 https://access.redhat.com/security/cve/CVE-2022-1016 https://access.redhat.com/security/cve/CVE-2022-1048 https://access.redhat.com/security/cve/CVE-2022-1055 https://access.redhat.com/security/cve/CVE-2022-1184 https://access.redhat.com/security/cve/CVE-2022-1852 https://access.redhat.com/security/cve/CVE-2022-2078 https://access.redhat.com/security/cve/CVE-2022-2586 https://access.redhat.com/security/cve/CVE-2022-2639 https://access.redhat.com/security/cve/CVE-2022-2938 https://access.redhat.com/security/cve/CVE-2022-20368 https://access.redhat.com/security/cve/CVE-2022-21499 https://access.redhat.com/security/cve/CVE-2022-24448 https://access.redhat.com/security/cve/CVE-2022-26373 https://access.redhat.com/security/cve/CVE-2022-27950 https://access.redhat.com/security/cve/CVE-2022-28390 https://access.redhat.com/security/cve/CVE-2022-28893 https://access.redhat.com/security/cve/CVE-2022-29581 https://access.redhat.com/security/cve/CVE-2022-36946 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.7_release_notes/index https://access.redhat.com/solutions/6971358 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 iQIVAwUBY2pStdzjgjWX9erEAQgIEA/9Ggp7uIcIjbfaqRCmsEaFtpKLZC9g7gzn tzwNC6iuk5ATEhqnlM37hGk2m8wgVAMowgith22ET4fB9kSbVHK0TxJ3NHOSj2x9 5mlaS43dyzzugXiMB3KtptUpPL26qHKeZ70bb4iCY/EMdmE+uqfOwvr0g4S4S3m5 4DvjMc5y5dbsh62mGDAyhUxKapJHtQLfdIggPK9mDIGARvdW7RvxVXZPAQBC8b4u kwq52OeAlDvM1snnm4cp5AcyQYjw+nFdjEXz9HfQeiHnvA2s83K50YaS7N0ztrcq Zk8OvXOd4aiG/6ZdRBmH+DH4LkIaHoket2xfGtSi7QftXzIBu5KfjTn6ihUMQTE4 Gk3buULeeEwYzeHpdrwpMNrbndKA+y+wZCNJXeFK5d1O4inb1Fr/2SU8pSLAXfdL FrrsmyDdHmAPHz1c/+Gd2qLD4eFFVKMviZRd+M33P8JkqRD+jGLAjiVdLxP9i0W9 x38G8kStd0v9GssrD3OjZIfX5dNkt0/PKXZomCIFEeg+QtNPvXzLXw6hGHSHjTax FR9l0No3La9BWUCatCObkw+S9IL8V57qW5vATW669bvEaUMHWngGun6cIPRVdqcE mkmbW0P2vV/h3lNuIf0m+90eNnm01PeSyOle3x4tnMoir06ohcCzlN5tW0IdCpTp NJJ0TvWYelE=ay2R -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce