RedHat: RHSA-2021-4140:02 Moderate: kernel-rt security and bug fix update
Summary
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. (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: 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() (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: overlayfs: 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 (CVE-2021-28971)
* kernel: protection for sequences of pointer arithmetic operations against
speculatively out-of-bounds loads can be bypassed to leak content of kernel
memory (CVE-2021-29155)
* kernel: improper input validation in tipc_nl_retrieve_key function
(CVE-2021-29646)
* kernel: lack a full memory barrier upon the assignment of a new table
value in x_tables.h 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 (CVE-2021-3635)
* kernel: NULL pointer dereference in llsec_key_alloc() (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)
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2020-0427 https://access.redhat.com/security/cve/CVE-2020-24502 https://access.redhat.com/security/cve/CVE-2020-24503 https://access.redhat.com/security/cve/CVE-2020-24504 https://access.redhat.com/security/cve/CVE-2020-24586 https://access.redhat.com/security/cve/CVE-2020-24587 https://access.redhat.com/security/cve/CVE-2020-24588 https://access.redhat.com/security/cve/CVE-2020-26139 https://access.redhat.com/security/cve/CVE-2020-26140 https://access.redhat.com/security/cve/CVE-2020-26141 https://access.redhat.com/security/cve/CVE-2020-26143 https://access.redhat.com/security/cve/CVE-2020-26144 https://access.redhat.com/security/cve/CVE-2020-26145 https://access.redhat.com/security/cve/CVE-2020-26146 https://access.redhat.com/security/cve/CVE-2020-26147 https://access.redhat.com/security/cve/CVE-2020-29368 https://access.redhat.com/security/cve/CVE-2020-29660 https://access.redhat.com/security/cve/CVE-2020-36158 https://access.redhat.com/security/cve/CVE-2020-36386 https://access.redhat.com/security/cve/CVE-2021-0129 https://access.redhat.com/security/cve/CVE-2021-3348 https://access.redhat.com/security/cve/CVE-2021-3489 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-2021-3600 https://access.redhat.com/security/cve/CVE-2021-3635 https://access.redhat.com/security/cve/CVE-2021-3659 https://access.redhat.com/security/cve/CVE-2021-3679 https://access.redhat.com/security/cve/CVE-2021-3732 https://access.redhat.com/security/cve/CVE-2021-20194 https://access.redhat.com/security/cve/CVE-2021-20239 https://access.redhat.com/security/cve/CVE-2021-23133 https://access.redhat.com/security/cve/CVE-2021-28950 https://access.redhat.com/security/cve/CVE-2021-28971 https://access.redhat.com/security/cve/CVE-2021-29155 https://access.redhat.com/security/cve/CVE-2021-29646 https://access.redhat.com/security/cve/CVE-2021-29650 https://access.redhat.com/security/cve/CVE-2021-31440 https://access.redhat.com/security/cve/CVE-2021-31829 https://access.redhat.com/security/cve/CVE-2021-31916 https://access.redhat.com/security/cve/CVE-2021-33200 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/
Package List
Red Hat Enterprise Linux NFV (v. 8):
Source:
kernel-rt-4.18.0-348.rt7.130.el8.src.rpm
x86_64:
kernel-rt-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-core-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-core-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-devel-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-kvm-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-modules-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debuginfo-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-devel-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-kvm-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-modules-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-modules-extra-4.18.0-348.rt7.130.el8.x86_64.rpm
Red Hat Enterprise Linux RT (v. 8):
Source:
kernel-rt-4.18.0-348.rt7.130.el8.src.rpm
x86_64:
kernel-rt-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-core-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-core-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-debuginfo-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-devel-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-modules-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debug-modules-extra-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debuginfo-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-debuginfo-common-x86_64-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-devel-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-modules-4.18.0-348.rt7.130.el8.x86_64.rpm
kernel-rt-modules-extra-4.18.0-348.rt7.130.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/
Topic
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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux NFV (v. 8) - x86_64
Red Hat Enterprise Linux RT (v. 8) - x86_64
Bugs Fixed
1875275 - Failure to enter full_nohz due to needless SCHED softirqs
1902412 - [kernel-rt] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u129:3/1367837 observed with blktests nvme-tcp tests
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
1905747 - kernel-rt-debug: WARNING: possible circular locking dependency detected(&serv->sv_lock -> (softirq_ctrl.lock).lock)
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
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 drivers1930379 - CVE-2020-24502 kernel: Improper input validation in some Intel(R) Ethernet E810 Adapter drivers1930381 - CVE-2020-24503 kernel: Insufficient access control in some Intel(R) Ethernet E810 Adapter drivers1941762 - 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
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 numbers1960504 - CVE-2020-26147 kernel: reassembling mixed encrypted/plaintext fragments
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.
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
1975949 - CVE-2021-3659 kernel: NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c
1976946 - CVE-2021-3635 kernel: flowtable list del corruption with kernel BUG at lib/list_debug.c:50
1981954 - CVE-2021-3600 kernel: eBPF 32-bit source register truncation on div/mod
1989165 - CVE-2021-3679 kernel: DoS in rb_per_cpu_empty()
1995249 - CVE-2021-3732 kernel: overlayfs: Mounting overlayfs inside an unprivileged user namespace can reveal files
