kernel-5.14.0-284.18.1.el9_2

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: use-after-free vulnerability in the perf_group_detach function of the Linux Kernel Performance Events (CVE-2023-2235)
* kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233)
* Kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)
* kernel: OOB access in the Linux kernel's XFS subsystem (CVE-2023-2124)
* kernel: i2c: out-of-bounds write in xgene_slimpro_i2c_xfer() (CVE-2023-2194)
* kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference (CVE-2023-28466)

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):

* Intel QAT Update - (kernel changes) (BZ#2176846)
* RPL-P IOTG/RPL-S IOTG: cpu frequency issues (BZ#2178857)
* In FIPS mode, kernel does not transition into error state when RCT or APT health tests fail (BZ#2181727)
* Kernel BUG in iwlmvm wifi driver when used Mesh systems (BZ#2186723)
* Azure RHEL 9 Backport upstream commit 93827a0a36396f2fd6368a54a020f420c8916e9b [KVM: VMX: Fix crash due to uninitialized current_vmcs] (BZ#2186822)
* RHEL 9 blktests nvme/047 lead kernel NULL pointer (BZ#2187536)
* Single Node Openshift cluster becomes unreachable after running less than 2 hours (BZ#2187709)
* kernel[-rt]: task deadline_test:1778 blocked for more than 622 seconds (BZ#2188655)
* fix page end in filemap_get_read_batch (BZ#2189349)
* RHEL 9.2 hwpoison: data loss when memory error occurs on hugetlb pagecache (BZ#2192348)
* wdat_wdt watchdog timeout triggered unexpectedly (BZ#2192585)
* ice: high CPU usage with GNSS or ptp4l (BZ#2203154)
* RHEL 9 "smpboot: Scheduler frequency invariance went wobbly, disabling!" on nohz_full CPUs after long run (BZ#2203178)
* Dying percpu kworkers cause issues on isolated CPUs [rhel-9] (BZ#2203229)
* FJ9.2 Bug: [REG] NFS infinite loop of COMMIT call and NFS4ERR_DELAY reply. (BZ#2203335)
* perf errors - "event syntax error: 'unc_p_delayed_c_state_abort_core5'" b'_ value too big for format, maximum is 255' (BZ#2207471)
* RHEL 9: Invalid character detected by rpminspect in Documentation/translations/zh_CN/process/magic-number.rst (BZ#2208242)
* cifs: backport small patches to bring us close to 9.1 - backport commit aea02fc40a7f cifs: fix wrong unlock before return from cifs_tree_connect (BZ#2209045)
* RHEL 9 x86_64, kdump 2nd kernel will randomly panic on "kvm-08-guest25.hv2" (BZ#2210614)

CVE-2023-2002
A vulnerability was found in the HCI sockets implementation due to a missing capability check in net/bluetooth/hci_sock.c in the Linux Kernel. This flaw allows an attacker to unauthorized execution of management commands, compromising the confidentiality, integrity, and availability of Bluetooth communication.
CVE-2023-2124
An out-of-bounds memory access flaw was found in the Linux kernel’s XFS file system in how a user restores an XFS image after failure (with a dirty log journal). This flaw allows a local user to crash or potentially escalate their privileges on the system.
CVE-2023-2194
An out-of-bounds write vulnerability was found in the Linux kernel's SLIMpro I2C device driver. The userspace "data->block[0]" variable was not capped to a number between 0-255 and was used as the size of a memcpy, possibly writing beyond the end of dma_buffer. This flaw could allow a local privileged user to crash the system or potentially achieve code execution.
CVE-2023-2235
A use-after-free vulnerability in the Linux Kernel Performance Events system can be exploited to achieve local privilege escalation. The perf_group_detach function did not check the event's siblings' attach_state before calling add_event_to_groups(), but remove_on_exec made it possible to call list_del_event() on before detaching from their group, making it possible to use a dangling pointer causing a use-after-free vulnerability. We recommend upgrading past commit fd0815f632c24878e325821943edccc7fde947a2.
CVE-2023-28466
do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or NULL pointer dereference).
CVE-2023-32233
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.