RHSA-2023:7539HighCVSS 7.8

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Published
November 28, 2023
Last Modified
July 30, 2026

🔗 CVE IDs covered (21)

CVE-2023-4206 →CVE-2023-1192 →CVE-2023-4208 →CVE-2023-38409 →CVE-2023-52562 →CVE-2023-53620 →CVE-2023-53832 →CVE-2023-54123 →CVE-2023-54294 →CVE-2023-4207 →CVE-2022-40982 →CVE-2022-45886 →CVE-2023-53299 →CVE-2023-53114 →CVE-2023-4732 →CVE-2023-42753 →CVE-2022-45884 →CVE-2022-45919 →CVE-2022-50822 →CVE-2023-3609 →CVE-2023-4128 · pending

📋 Description

CVE-2022-40982 — hw: Intel: Gather Data Sampling (GDS) side channel vulnerability CVE-2022-45884 — kernel: use-after-free due to race condition occurring in dvb_register_device() CVE-2022-45886 — kernel: use-after-free due to race condition occurring in dvb_net.c CVE-2022-45919 — kernel: use-after-free due to race condition occurring in dvb_ca_en50221.c CVE-2022-50822 — kernel: Linux kernel: Memory leak in RDMA restrack leads to Denial of Service CVE-2023-1192 — kernel: use-after-free in smb2_is_status_io_timeout() CVE-2023-3609 — kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails CVE-2023-4128 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route CVE-2023-4206 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route CVE-2023-4207 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route CVE-2023-4208 — kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route CVE-2023-4732 — kernel: Race between task migrating pages and another task calling exit_mmap to release those same pages getting invalid opcode BUG in include/linux/swapops.h CVE-2023-38409 — kernel: fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment CVE-2023-42753 — kernel: netfilter: potential slab-out-of-bound access due to integer underflow CVE-2023-52562 — kernel: mm/slab_common: slab_caches list corruption after kmem_cache_destroy() CVE-2023-53114 — kernel: i40e: Fix kernel crash during reboot when adapter is in recovery mode CVE-2023-53299 — kernel: md/raid10: fix leak of 'r10bio->remaining' for recovery CVE-2023-53620 — kernel: md: fix soft lockup in status_resync CVE-2023-53832 — kernel: md/raid10: fix null-ptr-deref in raid10_sync_request CVE-2023-54123 — kernel: Kernel: Denial of Service due to memory leak in RAID10 functionality CVE-2023-54294 — kernel: md/raid10: fix memleak of md thread

🎯 Affected products122

  • Red Hat CodeReady Linux Builder EUS (v.8.8)
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-0:4.18.0-477.36.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-0:4.18.0-477.36.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-0:4.18.0-477.36.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-0:4.18.0-477.36.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.36.1.el8_8.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.36.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.36.1.el8_8.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.36.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.36.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.36.1.el8_8.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.36.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.36.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.36.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.36.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.36.1.el8_8.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.36.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-abi-stablelists-0:4.18.0-477.36.1.el8_8.noarch as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-core-0:4.18.0-477.36.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-core-0:4.18.0-477.36.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-core-0:4.18.0-477.36.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-core-0:4.18.0-477.36.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-0:4.18.0-477.36.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-0:4.18.0-477.36.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-0:4.18.0-477.36.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-0:4.18.0-477.36.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-core-0:4.18.0-477.36.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-core-0:4.18.0-477.36.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-core-0:4.18.0-477.36.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • +92 more not shown

✅ Remediation

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. Workaround: The vulnerability can be mitigated by installing the CPU microcode package microcode_ctl version 20230808. Workaround: To mitigate this issue, it is possible to prevent the affected code from being loaded by blacklisting the `dvb-core` kernel module. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278. Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: To mitigate this issue, prevent module cls_u32 from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. Workaround: To mitigate this issue, prevent the module cls_u32 from being loaded by blacklisting the module to prevent it from loading automatically. ~~~ https://access.redhat.com/solutions/41278 ~~~ Workaround: A possible workaround is disabling Transparent Hugepage Workaround: Mitigation for this issue is to skip loading the affected module "fbcon" onto the system until we have a fix available. This can be done by a blacklist mechanism and will ensure the driver is not loaded at boot time. ~~~ How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~ Workaround: Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: To mitigate this issue, prevent module md_mod from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

🔗 References (14)