RHSA-2024:2621HighCVSS 7.1

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

Published
April 30, 2024
Last Modified
August 6, 2026

🔗 CVE IDs covered (7)

CVE-2021-33631 →CVE-2022-3640 →CVE-2022-42895 →CVE-2022-49940 →CVE-2022-50116 →CVE-2023-6546 →CVE-2024-25744 →

📋 Description

CVE-2021-33631 — kernel: ext4: kernel bug in ext4_write_inline_data_end() CVE-2022-3640 — kernel: use after free flaw in l2cap_conn_del in net/bluetooth/l2cap_core.c CVE-2022-42895 — kernel: Information leak in l2cap_parse_conf_req in net/bluetooth/l2cap_core.c CVE-2022-49940 — kernel: tty: n_gsm: add sanity check for gsm->receive in gsm_receive_buf() CVE-2022-50116 — kernel: tty: n_gsm: fix deadlock and link starvation in outgoing data path CVE-2023-6546 — kernel: GSM multiplexing race condition leads to privilege escalation CVE-2024-25744 — kernel: untrusted VMM can trigger int80 syscall handling

🎯 Affected products122

  • Red Hat CodeReady Linux Builder EUS (v.8.8)
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-0:4.18.0-477.55.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-0:4.18.0-477.55.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-0:4.18.0-477.55.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-0:4.18.0-477.55.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.55.1.el8_8.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.55.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.55.1.el8_8.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.55.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.55.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.55.1.el8_8.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.8.8)
  • bpftool-debuginfo-0:4.18.0-477.55.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.55.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.55.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.55.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.55.1.el8_8.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-0:4.18.0-477.55.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-abi-stablelists-0:4.18.0-477.55.1.el8_8.noarch as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-core-0:4.18.0-477.55.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-core-0:4.18.0-477.55.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-core-0:4.18.0-477.55.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-core-0:4.18.0-477.55.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-0:4.18.0-477.55.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-0:4.18.0-477.55.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-0:4.18.0-477.55.1.el8_8.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-0:4.18.0-477.55.1.el8_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-core-0:4.18.0-477.55.1.el8_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-core-0:4.18.0-477.55.1.el8_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.8.8)
  • kernel-debug-core-0:4.18.0-477.55.1.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: 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: 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: This flaw can be mitigated by preventing the affected `n_gsm` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278. Workaround: This vulnerability can be mitigated by disabling 32-bit emulation by default for TDX and SEV. The user can override it with the ia32_emulation=y command line option.

🔗 References (7)