ID

VAR-202103-1243

CVE

CVE-2021-28971

TITLE

Linux Kernel  Resource exhaustion vulnerability in

DESCRIPTION

In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel through 5.11.8 on some Haswell CPUs, userspace applications (such as perf-fuzzer) can cause a system crash because the PEBS status in a PEBS record is mishandled, aka CID-d88d05a9e0b6. Linux Kernel Exists in a resource exhaustion vulnerability. Vendor exploits this vulnerability CID-d88d05a9e0b6 It is published as.Service operation interruption (DoS) It may be in a state. 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: out-of-bounds reads in pinctrl subsystem. Solution: For OpenShift Container Platform 4.7 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this errata update: https://docs.openshift.com/container-platform/4.7/release_notes/ocp-4-7-release-notes.html For Red Hat OpenShift Logging 5.0, see the following instructions to apply this update: https://docs.openshift.com/container-platform/4.7/logging/cluster-logging-upgrading.html 4. Bugs fixed (https://bugzilla.redhat.com/): 2030932 - CVE-2021-44228 log4j-core: Remote code execution in Log4j 2.x when logs contain an attacker-controlled string value 5. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: kernel security, bug fix, and enhancement update Advisory ID: RHSA-2021:4356-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4356 Issue date: 2021-11-09 CVE Names: CVE-2020-0427 CVE-2020-24502 CVE-2020-24503 CVE-2020-24504 CVE-2020-24586 CVE-2020-24587 CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26145 CVE-2020-26146 CVE-2020-26147 CVE-2020-27777 CVE-2020-29368 CVE-2020-29660 CVE-2020-36158 CVE-2020-36386 CVE-2021-0129 CVE-2021-3348 CVE-2021-3489 CVE-2021-3564 CVE-2021-3573 CVE-2021-3600 CVE-2021-3635 CVE-2021-3659 CVE-2021-3679 CVE-2021-3732 CVE-2021-20194 CVE-2021-20239 CVE-2021-23133 CVE-2021-28950 CVE-2021-28971 CVE-2021-29155 CVE-2021-29646 CVE-2021-29650 CVE-2021-31440 CVE-2021-31829 CVE-2021-31916 CVE-2021-33200 ==================================================================== 1. Summary: An update for kernel 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 BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64 Red Hat Enterprise Linux CRB (v. 8) - aarch64, ppc64le, x86_64 3. Security Fix(es): * kernel: out-of-bounds reads in pinctrl subsystem (CVE-2020-0427) * kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24502) * kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24503) * kernel: Uncontrolled resource consumption in some Intel(R) Ethernet E810 Adapter drivers (CVE-2020-24504) * kernel: Fragmentation cache not cleared on reconnection (CVE-2020-24586) * kernel: Reassembling fragments encrypted under different keys (CVE-2020-24587) * kernel: wifi frame payload being parsed incorrectly as an L2 frame (CVE-2020-24588) * kernel: Forwarding EAPOL from unauthenticated wifi client (CVE-2020-26139) * kernel: accepting plaintext data frames in protected networks (CVE-2020-26140) * kernel: not verifying TKIP MIC of fragmented frames (CVE-2020-26141) * kernel: accepting fragmented plaintext frames in protected networks (CVE-2020-26143) * kernel: accepting unencrypted A-MSDU frames that start with RFC1042 header (CVE-2020-26144) * kernel: accepting plaintext broadcast fragments as full frames (CVE-2020-26145) * kernel: powerpc: RTAS calls can be used to compromise kernel integrity (CVE-2020-27777) * kernel: locking inconsistency in tty_io.c and tty_jobctrl.c can lead to a read-after-free (CVE-2020-29660) * kernel: buffer overflow in mwifiex_cmd_802_11_ad_hoc_start function via a long SSID value (CVE-2020-36158) * kernel: slab out-of-bounds read in hci_extended_inquiry_result_evt() (CVE-2020-36386) * kernel: Improper access control in BlueZ may allow information disclosure vulnerability. (CVE-2021-0129) * kernel: Use-after-free in ndb_queue_rq() in drivers/block/nbd.c (CVE-2021-3348) * kernel: Linux kernel eBPF RINGBUF map oversized allocation (CVE-2021-3489) * 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: eBPF 32-bit source register truncation on div/mod (CVE-2021-3600) * kernel: DoS in rb_per_cpu_empty() (CVE-2021-3679) * kernel: Mounting overlayfs inside an unprivileged user namespace can reveal files (CVE-2021-3732) * kernel: heap overflow in __cgroup_bpf_run_filter_getsockopt() (CVE-2021-20194) * kernel: Race condition in sctp_destroy_sock list_del (CVE-2021-23133) * kernel: fuse: stall on CPU can occur because a retry loop continually finds the same bad inode (CVE-2021-28950) * kernel: System crash in intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c (CVE-2021-28971) * kernel: protection can be bypassed to leak content of kernel memory (CVE-2021-29155) * kernel: improper input validation in tipc_nl_retrieve_key function in net/tipc/node.c (CVE-2021-29646) * kernel: lack a full memory barrier may lead to DoS (CVE-2021-29650) * kernel: local escalation of privileges in handling of eBPF programs (CVE-2021-31440) * kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content of kernel memory (CVE-2021-31829) * kernel: out-of-bounds reads and writes due to enforcing incorrect limits for pointer arithmetic operations by BPF verifier (CVE-2021-33200) * kernel: reassembling encrypted fragments with non-consecutive packet numbers (CVE-2020-26146) * kernel: reassembling mixed encrypted/plaintext fragments (CVE-2020-26147) * kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check (CVE-2020-29368) * kernel: flowtable list del corruption with kernel BUG at lib/list_debug.c:50 (CVE-2021-3635) * kernel: NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c (CVE-2021-3659) * kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure (CVE-2021-20239) * kernel: out of bounds array access in drivers/md/dm-ioctl.c (CVE-2021-31916) 4. Solution: 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 8.5 Release Notes linked from the References section. 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/): 1509204 - dlm: Add ability to set SO_MARK on DLM sockets 1793880 - Unreliable RTC synchronization (11-minute mode) 1816493 - [RHEL 8.3] Discard request from mkfs.xfs takes too much time on raid10 1900844 - CVE-2020-27777 kernel: powerpc: RTAS calls can be used to compromise kernel integrity 1903244 - CVE-2020-29368 kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check 1906522 - CVE-2020-29660 kernel: locking inconsistency in drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c can lead to a read-after-free 1912683 - CVE-2021-20194 kernel: heap overflow in __cgroup_bpf_run_filter_getsockopt() 1913348 - CVE-2020-36158 kernel: buffer overflow in mwifiex_cmd_802_11_ad_hoc_start function in drivers/net/wireless/marvell/mwifiex/join.c via a long SSID value 1915825 - Allow falling back to genfscon labeling when the FS doesn't support xattrs and there is a fs_use_xattr rule for it 1919893 - CVE-2020-0427 kernel: out-of-bounds reads in pinctrl subsystem. 1921958 - CVE-2021-3348 kernel: Use-after-free in ndb_queue_rq() in drivers/block/nbd.c 1923636 - CVE-2021-20239 kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure 1930376 - CVE-2020-24504 kernel: Uncontrolled resource consumption in some Intel(R) Ethernet E810 Adapter drivers 1930379 - CVE-2020-24502 kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers 1930381 - CVE-2020-24503 kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers 1933527 - Files on cifs mount can get mixed contents when underlying file is removed but inode number is reused, when mounted with 'serverino' and 'cache=strict ' 1939341 - CNB: net: add inline function skb_csum_is_sctp 1941762 - CVE-2021-28950 kernel: fuse: stall on CPU can occur because a retry loop continually finds the same bad inode 1941784 - CVE-2021-28971 kernel: System crash in intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c 1945345 - CVE-2021-29646 kernel: improper input validation in tipc_nl_retrieve_key function in net/tipc/node.c 1945388 - CVE-2021-29650 kernel: lack a full memory barrier upon the assignment of a new table value in net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h may lead to DoS 1946965 - CVE-2021-31916 kernel: out of bounds array access in drivers/md/dm-ioctl.c 1948772 - CVE-2021-23133 kernel: Race condition in sctp_destroy_sock list_del 1951595 - CVE-2021-29155 kernel: protection for sequences of pointer arithmetic operations against speculatively out-of-bounds loads can be bypassed to leak content of kernel memory 1953847 - [ethtool] The `NLM_F_MULTI` should be used for `NLM_F_DUMP` 1954588 - RHEL kernel 8.2 and higher are affected by data corruption bug in raid1 arrays using bitmaps. 1957788 - CVE-2021-31829 kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content of kernel memory 1959559 - CVE-2021-3489 kernel: Linux kernel eBPF RINGBUF map oversized allocation 1959642 - CVE-2020-24586 kernel: Fragmentation cache not cleared on reconnection 1959654 - CVE-2020-24587 kernel: Reassembling fragments encrypted under different keys 1959657 - CVE-2020-24588 kernel: wifi frame payload being parsed incorrectly as an L2 frame 1959663 - CVE-2020-26139 kernel: Forwarding EAPOL from unauthenticated wifi client 1960490 - CVE-2020-26140 kernel: accepting plaintext data frames in protected networks 1960492 - CVE-2020-26141 kernel: not verifying TKIP MIC of fragmented frames 1960496 - CVE-2020-26143 kernel: accepting fragmented plaintext frames in protected networks 1960498 - CVE-2020-26144 kernel: accepting unencrypted A-MSDU frames that start with RFC1042 header 1960500 - CVE-2020-26145 kernel: accepting plaintext broadcast fragments as full frames 1960502 - CVE-2020-26146 kernel: reassembling encrypted fragments with non-consecutive packet numbers 1960504 - CVE-2020-26147 kernel: reassembling mixed encrypted/plaintext fragments 1960708 - please add CAP_CHECKPOINT_RESTORE to capability.h 1964028 - CVE-2021-31440 kernel: local escalation of privileges in handling of eBPF programs 1964139 - CVE-2021-3564 kernel: double free in bluetooth subsystem when the HCI device initialization fails 1965038 - CVE-2021-0129 kernel: Improper access control in BlueZ may allow information disclosure vulnerability. 1965360 - kernel: get_timespec64 does not ignore padding in compat syscalls 1965458 - CVE-2021-33200 kernel: out-of-bounds reads and writes due to enforcing incorrect limits for pointer arithmetic operations by BPF verifier 1966578 - CVE-2021-3573 kernel: use-after-free in function hci_sock_bound_ioctl() 1969489 - CVE-2020-36386 kernel: slab out-of-bounds read in hci_extended_inquiry_result_evt() in net/bluetooth/hci_event.c 1971101 - ceph: potential data corruption in cephfs write_begin codepath 1972278 - libceph: allow addrvecs with a single NONE/blank address 1974627 - [TIPC] kernel BUG at lib/list_debug.c:31! 1975182 - CVE-2021-33909 kernel: size_t-to-int conversion vulnerability in the filesystem layer [rhel-8.5.0] 1975949 - CVE-2021-3659 kernel: NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c 1976679 - blk-mq: fix/improve io scheduler batching dispatch 1976699 - [SCTP]WARNING: CPU: 29 PID: 3165 at mm/page_alloc.c:4579 __alloc_pages_slowpath+0xb74/0xd00 1976946 - CVE-2021-3635 kernel: flowtable list del corruption with kernel BUG at lib/list_debug.c:50 1976969 - XFS: followup to XFS sync to upstream v5.10 (re BZ1937116) 1977162 - [XDP] test program warning: libbpf: elf: skipping unrecognized data section(16) .eh_frame 1977422 - Missing backport of IMA boot aggregate calculation in rhel 8.4 kernel 1977537 - RHEL8.5: Update the kernel workqueue code to v5.12 level 1977850 - geneve virtual devices lack the NETIF_F_FRAGLIST feature 1978369 - dm writecache: sync with upstream 5.14 1979070 - Inaccessible NFS server overloads clients (native_queued_spin_lock_slowpath connotation?) 1979680 - Backport openvswitch tracepoints 1981954 - CVE-2021-3600 kernel: eBPF 32-bit source register truncation on div/mod 1986138 - Lockd invalid cast to nlm_lockowner 1989165 - CVE-2021-3679 kernel: DoS in rb_per_cpu_empty() 1989999 - ceph omnibus backport for RHEL-8.5.0 1991976 - block: fix New warning in nvme_setup_discard 1992700 - blk-mq: fix kernel panic when iterating over flush request 1995249 - CVE-2021-3732 kernel: overlayfs: Mounting overlayfs inside an unprivileged user namespace can reveal files 1996854 - dm crypt: Avoid percpu_counter spinlock contention in crypt_page_alloc() 6. Package List: Red Hat Enterprise Linux BaseOS (v. 8): Source: kernel-4.18.0-348.el8.src.rpm aarch64: bpftool-4.18.0-348.el8.aarch64.rpm bpftool-debuginfo-4.18.0-348.el8.aarch64.rpm kernel-4.18.0-348.el8.aarch64.rpm kernel-core-4.18.0-348.el8.aarch64.rpm kernel-cross-headers-4.18.0-348.el8.aarch64.rpm kernel-debug-4.18.0-348.el8.aarch64.rpm kernel-debug-core-4.18.0-348.el8.aarch64.rpm kernel-debug-debuginfo-4.18.0-348.el8.aarch64.rpm kernel-debug-devel-4.18.0-348.el8.aarch64.rpm kernel-debug-modules-4.18.0-348.el8.aarch64.rpm kernel-debug-modules-extra-4.18.0-348.el8.aarch64.rpm kernel-debuginfo-4.18.0-348.el8.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-348.el8.aarch64.rpm kernel-devel-4.18.0-348.el8.aarch64.rpm kernel-headers-4.18.0-348.el8.aarch64.rpm kernel-modules-4.18.0-348.el8.aarch64.rpm kernel-modules-extra-4.18.0-348.el8.aarch64.rpm kernel-tools-4.18.0-348.el8.aarch64.rpm kernel-tools-debuginfo-4.18.0-348.el8.aarch64.rpm kernel-tools-libs-4.18.0-348.el8.aarch64.rpm perf-4.18.0-348.el8.aarch64.rpm perf-debuginfo-4.18.0-348.el8.aarch64.rpm python3-perf-4.18.0-348.el8.aarch64.rpm python3-perf-debuginfo-4.18.0-348.el8.aarch64.rpm noarch: kernel-abi-stablelists-4.18.0-348.el8.noarch.rpm kernel-doc-4.18.0-348.el8.noarch.rpm ppc64le: bpftool-4.18.0-348.el8.ppc64le.rpm bpftool-debuginfo-4.18.0-348.el8.ppc64le.rpm kernel-4.18.0-348.el8.ppc64le.rpm kernel-core-4.18.0-348.el8.ppc64le.rpm kernel-cross-headers-4.18.0-348.el8.ppc64le.rpm kernel-debug-4.18.0-348.el8.ppc64le.rpm kernel-debug-core-4.18.0-348.el8.ppc64le.rpm kernel-debug-debuginfo-4.18.0-348.el8.ppc64le.rpm kernel-debug-devel-4.18.0-348.el8.ppc64le.rpm kernel-debug-modules-4.18.0-348.el8.ppc64le.rpm kernel-debug-modules-extra-4.18.0-348.el8.ppc64le.rpm kernel-debuginfo-4.18.0-348.el8.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-348.el8.ppc64le.rpm kernel-devel-4.18.0-348.el8.ppc64le.rpm kernel-headers-4.18.0-348.el8.ppc64le.rpm kernel-modules-4.18.0-348.el8.ppc64le.rpm kernel-modules-extra-4.18.0-348.el8.ppc64le.rpm kernel-tools-4.18.0-348.el8.ppc64le.rpm kernel-tools-debuginfo-4.18.0-348.el8.ppc64le.rpm kernel-tools-libs-4.18.0-348.el8.ppc64le.rpm perf-4.18.0-348.el8.ppc64le.rpm perf-debuginfo-4.18.0-348.el8.ppc64le.rpm python3-perf-4.18.0-348.el8.ppc64le.rpm python3-perf-debuginfo-4.18.0-348.el8.ppc64le.rpm s390x: bpftool-4.18.0-348.el8.s390x.rpm bpftool-debuginfo-4.18.0-348.el8.s390x.rpm kernel-4.18.0-348.el8.s390x.rpm kernel-core-4.18.0-348.el8.s390x.rpm kernel-cross-headers-4.18.0-348.el8.s390x.rpm kernel-debug-4.18.0-348.el8.s390x.rpm kernel-debug-core-4.18.0-348.el8.s390x.rpm kernel-debug-debuginfo-4.18.0-348.el8.s390x.rpm kernel-debug-devel-4.18.0-348.el8.s390x.rpm kernel-debug-modules-4.18.0-348.el8.s390x.rpm kernel-debug-modules-extra-4.18.0-348.el8.s390x.rpm kernel-debuginfo-4.18.0-348.el8.s390x.rpm kernel-debuginfo-common-s390x-4.18.0-348.el8.s390x.rpm kernel-devel-4.18.0-348.el8.s390x.rpm kernel-headers-4.18.0-348.el8.s390x.rpm kernel-modules-4.18.0-348.el8.s390x.rpm kernel-modules-extra-4.18.0-348.el8.s390x.rpm kernel-tools-4.18.0-348.el8.s390x.rpm kernel-tools-debuginfo-4.18.0-348.el8.s390x.rpm kernel-zfcpdump-4.18.0-348.el8.s390x.rpm kernel-zfcpdump-core-4.18.0-348.el8.s390x.rpm kernel-zfcpdump-debuginfo-4.18.0-348.el8.s390x.rpm kernel-zfcpdump-devel-4.18.0-348.el8.s390x.rpm kernel-zfcpdump-modules-4.18.0-348.el8.s390x.rpm kernel-zfcpdump-modules-extra-4.18.0-348.el8.s390x.rpm perf-4.18.0-348.el8.s390x.rpm perf-debuginfo-4.18.0-348.el8.s390x.rpm python3-perf-4.18.0-348.el8.s390x.rpm python3-perf-debuginfo-4.18.0-348.el8.s390x.rpm x86_64: bpftool-4.18.0-348.el8.x86_64.rpm bpftool-debuginfo-4.18.0-348.el8.x86_64.rpm kernel-4.18.0-348.el8.x86_64.rpm kernel-core-4.18.0-348.el8.x86_64.rpm kernel-cross-headers-4.18.0-348.el8.x86_64.rpm kernel-debug-4.18.0-348.el8.x86_64.rpm kernel-debug-core-4.18.0-348.el8.x86_64.rpm kernel-debug-debuginfo-4.18.0-348.el8.x86_64.rpm kernel-debug-devel-4.18.0-348.el8.x86_64.rpm kernel-debug-modules-4.18.0-348.el8.x86_64.rpm kernel-debug-modules-extra-4.18.0-348.el8.x86_64.rpm kernel-debuginfo-4.18.0-348.el8.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-348.el8.x86_64.rpm kernel-devel-4.18.0-348.el8.x86_64.rpm kernel-headers-4.18.0-348.el8.x86_64.rpm kernel-modules-4.18.0-348.el8.x86_64.rpm kernel-modules-extra-4.18.0-348.el8.x86_64.rpm kernel-tools-4.18.0-348.el8.x86_64.rpm kernel-tools-debuginfo-4.18.0-348.el8.x86_64.rpm kernel-tools-libs-4.18.0-348.el8.x86_64.rpm perf-4.18.0-348.el8.x86_64.rpm perf-debuginfo-4.18.0-348.el8.x86_64.rpm python3-perf-4.18.0-348.el8.x86_64.rpm python3-perf-debuginfo-4.18.0-348.el8.x86_64.rpm Red Hat Enterprise Linux CRB (v. 8): aarch64: bpftool-debuginfo-4.18.0-348.el8.aarch64.rpm kernel-debug-debuginfo-4.18.0-348.el8.aarch64.rpm kernel-debuginfo-4.18.0-348.el8.aarch64.rpm kernel-debuginfo-common-aarch64-4.18.0-348.el8.aarch64.rpm kernel-tools-debuginfo-4.18.0-348.el8.aarch64.rpm kernel-tools-libs-devel-4.18.0-348.el8.aarch64.rpm perf-debuginfo-4.18.0-348.el8.aarch64.rpm python3-perf-debuginfo-4.18.0-348.el8.aarch64.rpm ppc64le: bpftool-debuginfo-4.18.0-348.el8.ppc64le.rpm kernel-debug-debuginfo-4.18.0-348.el8.ppc64le.rpm kernel-debuginfo-4.18.0-348.el8.ppc64le.rpm kernel-debuginfo-common-ppc64le-4.18.0-348.el8.ppc64le.rpm kernel-tools-debuginfo-4.18.0-348.el8.ppc64le.rpm kernel-tools-libs-devel-4.18.0-348.el8.ppc64le.rpm perf-debuginfo-4.18.0-348.el8.ppc64le.rpm python3-perf-debuginfo-4.18.0-348.el8.ppc64le.rpm x86_64: bpftool-debuginfo-4.18.0-348.el8.x86_64.rpm kernel-debug-debuginfo-4.18.0-348.el8.x86_64.rpm kernel-debuginfo-4.18.0-348.el8.x86_64.rpm kernel-debuginfo-common-x86_64-4.18.0-348.el8.x86_64.rpm kernel-tools-debuginfo-4.18.0-348.el8.x86_64.rpm kernel-tools-libs-devel-4.18.0-348.el8.x86_64.rpm perf-debuginfo-4.18.0-348.el8.x86_64.rpm python3-perf-debuginfo-4.18.0-348.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. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYYrdRdzjgjWX9erEAQhs0w//as9X4T+FCf3TAbcNIStxlOK6fbJoAlST FrgNJnRH3RmT+VxRSLWZcsJQf78kudeJWtMezbGSVREfhCMBCGhKZ7mvVp5P7J8l bobmdaap3hqkPqq66VuKxGuS+6j0rXXgGQH034yzoX+L/lx6KV9qdAnZZO+7kWcy SfX0GkLg0ARDMfsoUKwVmeUeNLhPlJ4ZH2rBdZ4FhjyEAG/5yL9JwU/VNReWHjhW HgarTuSnFR3vLQDKyjMIEEiBPOI162hS2j3Ba/A/1hJ70HOjloJnd0eWYGxSuIfC DRrzlacFNAzBPZsbRFi1plXrHh5LtNoBBWjl+xyb6jRsB8eXgS+WhzUhOXGUv01E lJTwFy5Kz71d+cAhRXgmz5gVgWuoNJw8AEImefWcy4n0EEK55vdFe0Sl7BfZiwpD Jhx97He6OurNnLrYyJJ0+TsU1L33794Ag2AJZnN1PLFUyrKKNlD1ZWtdsJg99klK dQteUTnnUhgDG5Tqulf0wX19BEkLd/O6CRyGueJcV4h4PFpSoWOh5Yy/BlokFzc8 zf14PjuVueIodaIUXtK+70Zmw7tg09Dx5Asyfuk5hWFPYv856nHlDn7PT724CU8v 1cp96h1IjLR6cF17NO2JCcbU0XZEW+aCkGkPcsY8DhBmaZqxUxXObvTD80Mm7EvN +PuV5cms0sE=2UUA -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . ========================================================================== Ubuntu Security Notice USN-4948-1 May 11, 2021 linux-oem-5.10 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-oem-5.10: Linux kernel for OEM systems Details: Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ring buffer as was allocated. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3489) Manfred Paul discovered that the eBPF implementation in the Linux kernel did not properly track bounds on bitwise operations. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3490) Billy Jheng Bing-Jhong discovered that the io_uring implementation of the Linux kernel did not properly enforce the MAX_RW_COUNT limit in some situations. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3491) Kiyin (尹亮) discovered that the NFC LLCP protocol implementation in the Linux kernel contained a reference counting error. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-25670) Kiyin (尹亮) discovered that the NFC LLCP protocol implementation in the Linux kernel did not properly deallocate memory in certain error situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2020-25671, CVE-2020-25672) It was discovered that the Xen paravirtualization backend in the Linux kernel did not properly deallocate memory in some situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-28688) It was discovered that the io_uring subsystem in the Linux kernel contained a race condition leading to a deadlock condition. A local attacker could use this to cause a denial of service. (CVE-2021-28951) John Stultz discovered that the audio driver for Qualcomm SDM845 systems in the Linux kernel did not properly validate port ID numbers. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-28952) Zygo Blaxell discovered that the btrfs file system implementation in the Linux kernel contained a race condition during certain cloning operations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-28964) Vince Weaver discovered that the perf subsystem in the Linux kernel did not properly handle certain PEBS records properly for some Intel Haswell processors. A local attacker could use this cause a denial of service (system crash). (CVE-2021-28971) It was discovered that the RPA PCI Hotplug driver implementation in the Linux kernel did not properly handle device name writes via sysfs, leading to a buffer overflow. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-28972) It was discovered that the Freescale Gianfar Ethernet driver for the Linux kernel did not properly handle receive queue overrun when jumbo frames were enabled in some situations. An attacker could use this to cause a denial of service (system crash). An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-29266) It was discovered that the TIPC protocol implementation in the Linux kernel did not properly validate passed encryption key sizes. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-29646) It was discovered that the Qualcomm IPC router implementation in the Linux kernel did not properly initialize memory passed to user space. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-29647) It was discovered that the BPF user mode driver implementation in the Linux kernel did not properly deallocate memory in some situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-29649) It was discovered that a race condition existed in the netfilter subsystem of the Linux kernel when replacing tables. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-29650) Felix Wilhelm discovered that the KVM implementation in the Linux kernel for AMD processors contained race conditions on nested VMCB controls. A local attacker in a guest vm could possibly use this to gain elevated privileges. (CVE-2021-29657) Dan Carpenter discovered that the block device manager (dm) implementation in the Linux kernel contained a buffer overflow in the ioctl for listing devices. A privileged local attacker could use this to cause a denial of service (system crash). (CVE-2021-31916) 马哲宇 discovered that the IEEE 1394 (Firewire) nosy packet sniffer driver in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3483) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.10.0-1026-oem 5.10.0-1026.27 linux-image-oem-20.04b 5.10.0.1026.27 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://ubuntu.com/security/notices/USN-4948-1 CVE-2020-25670, CVE-2020-25671, CVE-2020-25672, CVE-2021-28688, CVE-2021-28951, CVE-2021-28952, CVE-2021-28964, CVE-2021-28971, CVE-2021-28972, CVE-2021-29264, CVE-2021-29266, CVE-2021-29646, CVE-2021-29647, CVE-2021-29649, CVE-2021-29650, CVE-2021-29657, CVE-2021-31916, CVE-2021-3483, CVE-2021-3489, CVE-2021-3490, CVE-2021-3491 Package Information: https://launchpad.net/ubuntu/+source/linux-oem-5.10/5.10.0-1026.27

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

resource management error

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Ubuntu

SOURCES

LAST UPDATE DATE

2024-09-17T22:10:02.793000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE