Issued:
2024-02-20
Updated:
2024-02-20

RHSA-2024:0881 - Important: kernel-rt security update

Synopsis

Important: kernel-rt security update

Type/Severity

Security Advisory Important

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 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.

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: net/sched: sch_hfsc UAF (CVE-2023-4623)

  • kernel: use-after-free in sch_qfq network scheduler (CVE-2023-4921)

  • kernel: inactive elements in nft_pipapo_walk (CVE-2023-6817)

  • kernel: IGB driver inadequate buffer size for frames larger than MTU (CVE-2023-45871)

  • kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination (CVE-2024-0646)

  • kernel: nfp: use-after-free in area_cache_get() (CVE-2022-3545)

  • kernel: null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip (CVE-2022-41858)

  • kernel: HID: check empty report_list in hid_validate_values() (CVE-2023-1073)

  • kernel: Possible use-after-free since the two fdget() during vhost_net_set_backend() (CVE-2023-1838)

  • kernel: NULL pointer dereference in can_rcv_filter (CVE-2023-2166)

  • kernel: Slab-out-of-bound read in compare_netdev_and_ip (CVE-2023-2176)

  • kernel: A heap out-of-bounds write when function perf_read_group is called and sibling_list is smaller than its child's sibling_list (CVE-2023-5717)

  • kernel: NULL pointer dereference in nvmet_tcp_build_iovec (CVE-2023-6356)

  • kernel: NULL pointer dereference in nvmet_tcp_execute_request (CVE-2023-6535)

  • kernel: NULL pointer dereference in __nvmet_req_complete (CVE-2023-6536)

  • kernel: Out-Of-Bounds Read vulnerability in smbCalcSize (CVE-2023-6606)

  • kernel: OOB Access in smb2_dump_detail (CVE-2023-6610)

  • kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (CVE-2023-40283)

  • kernel: SEV-ES local priv escalation (CVE-2023-46813)

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.

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.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle8.10x86_64
Red Hat Enterprise Linux for Real Time8x86_64
Red Hat Enterprise Linux for Real Time for NFV8x86_64

Updated Packages

  • kernel-rt-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-devel-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-debug-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-modules-extra-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-debug-devel-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-4.18.0-513.18.1.rt7.320.el8_9.src.rpm
  • kernel-rt-core-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-debug-kvm-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-debuginfo-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-debug-core-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-debug-debuginfo-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-kvm-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-debug-modules-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-debug-modules-extra-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm
  • kernel-rt-modules-4.18.0-513.18.1.rt7.320.el8_9.x86_64.rpm

Fixes

CVEs

References

Additional information