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OpenAdvisories
High RHSA-2026:40760 8 CVEs

Red Hat Security Advisory: kernel security update

Published Jul 16, 2026 · Updated Oct 17, 2026

Ecosystem: Red Hat

Fixed packages 49

ReleasePackageFixed in
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos bpftool 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos bpftool-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-abi-stablelists 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-core 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-core 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-devel 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-modules 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debug-modules-extra 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debuginfo-common-ppc64le 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-debuginfo-common-x86_64 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-devel 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-doc 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-modules 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-modules-extra 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-tools 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-tools-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos kernel-tools-libs 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos perf 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos perf-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos python3-perf 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 E4S rhel_e4s:8.8::baseos python3-perf-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos bpftool 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos bpftool-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-abi-stablelists 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-core 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-core 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-devel 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-modules 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debug-modules-extra 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-debuginfo-common-x86_64 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-devel 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-doc 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-modules 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-modules-extra 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-tools 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-tools-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos kernel-tools-libs 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos perf 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos perf-debuginfo 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos python3-perf 0:4.18.0-477.152.1.el8_8
Red Hat · RHEL 8.8 TUS rhel_tus:8.8::baseos python3-perf-debuginfo 0:4.18.0-477.152.1.el8_8

Vulnerabilities 8

  • High 8.8
    CVE-2026-31408

    Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold

    In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold sco_recv_frame() reads conn->sk under sco_conn_lock() but immediately releases the lock without holding a refer…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.1
    CVE-2026-31613

    smb: client: fix OOB reads parsing symlink error response

    In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOB reads parsing symlink error response When a CREATE returns STATUS_STOPPED_ON_SYMLINK, smb2_check_message() returns success without any length validation, leaving the syml…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-68183

    ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr

    In the Linux kernel, the following vulnerability has been resolved: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr Currently when both IMA and EVM are in fix mode, the IMA signature will be reset to IMA hash if a program first stores …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-43499 Public exploit

    rtmutex: Use waiter::task instead of current in remove_waiter()

    In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-46209

    drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs()

    In the Linux kernel, the following vulnerability has been resolved: drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs() drm_gem_fb_init_with_funcs() computes sub-sampled plane dimensions using plain integer division: unsigned…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.0
    CVE-2026-46189

    RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path

    In the Linux kernel, the following vulnerability has been resolved: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path Sashiko points out that pvrdma_uar_free() is already called within pvrdma_dealloc_ucontext(), so calling it before trigg…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-43027

    netfilter: nf_conntrack_helper: pass helper to expect cleanup

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_helper: pass helper to expect cleanup nf_conntrack_helper_unregister() calls nf_ct_expect_iterate_destroy() to remove expectations belonging to the helper being unregi…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2026-53166 Rejected

    This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

    linux-raspi2 linux-hwe linux-azure linux-riscv Ubuntu

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2422699
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2455334
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2461480
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2464369
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2480453
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482588
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2482636
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492805
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_40760.json
  • report
    https://access.redhat.com/security/cve/CVE-2025-68183
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-68183
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-68183
  • article
    https://lore.kernel.org/linux-cve-announce/2025121632-CVE-2025-68183-f588@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-31408
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-31408
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-31408
  • article
    https://lore.kernel.org/linux-cve-announce/2026040629-CVE-2026-31408-9f0f@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-31613
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-31613
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-31613
  • article
    https://lore.kernel.org/linux-cve-announce/2026042422-CVE-2026-31613-b061@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-43027
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-43027
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-43027
  • article
    https://lore.kernel.org/linux-cve-announce/2026050159-CVE-2026-43027-5711@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-43499
  • article
    https://access.redhat.com/security/vulnerabilities/RHSB-2026-010
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-43499
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-43499
  • article
    https://lore.kernel.org/linux-cve-announce/2026052158-CVE-2026-43499-1294@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-46189
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-46189
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-46189
  • article
    https://lore.kernel.org/linux-cve-announce/2026052831-CVE-2026-46189-c188@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-46209
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-46209
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-46209
  • article
    https://lore.kernel.org/linux-cve-announce/2026052834-CVE-2026-46209-e4e9@gregkh/T