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OpenAdvisories
Critical RHSA-2026:85773 10 CVEs

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

Published Oct 20, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 43

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::baseos bpftool 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos bpftool-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-abi-stablelists 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-core 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debug 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debug-core 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debug-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debug-devel 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debug-modules 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debug-modules-extra 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debuginfo-common-aarch64 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debuginfo-common-ppc64le 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debuginfo-common-s390x 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-debuginfo-common-x86_64 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-devel 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-doc 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-modules 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-modules-extra 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-tools 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-tools-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-tools-libs 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-zfcpdump 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-zfcpdump-core 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-zfcpdump-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-zfcpdump-devel 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-zfcpdump-modules 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos kernel-zfcpdump-modules-extra 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos perf 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos perf-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos python3-perf 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::baseos python3-perf-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb bpftool-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb kernel-debug-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb kernel-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb kernel-debuginfo-common-aarch64 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb kernel-debuginfo-common-ppc64le 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb kernel-debuginfo-common-x86_64 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb kernel-tools-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb kernel-tools-libs-devel 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb perf-debuginfo 0:4.18.0-553.176.1.el8_10
Red Hat · RHEL 8 enterprise_linux:8::crb python3-perf-debuginfo 0:4.18.0-553.176.1.el8_10

Vulnerabilities 10

  • Critical 9.8
    CVE-2026-74588

    sctp: keep chunk->transport in step with the list it is queued on

    In the Linux kernel, the following vulnerability has been resolved: sctp: keep chunk->transport in step with the list it is queued on __sctp_outq_flush_rtx() moves a gap-acked chunk onto another transport's transmitted list without updating chunk->transport: …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.8
    CVE-2026-74752

    sctp: validate cookie AUTH state before use

    In the Linux kernel, the following vulnerability has been resolved: sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIE_ECHO restores fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM len…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.8
    CVE-2026-89479

    sctp: stop processing a packet once its association is deleted

    In the Linux kernel, the following vulnerability has been resolved: sctp: stop processing a packet once its association is deleted sctp_endpoint_bh_rcv() looks the association up only when chunk->asoc is NULL, and caches the result in chunk->asoc and chunk->t…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.1
    CVE-2026-89631

    smb: client: reject a tree connect response whose byte count is too small

    In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon() bounds its strnlen() over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-52935

    xfrm: espintcp: do not reuse an in-progress partial send

    In the Linux kernel, the following vulnerability has been resolved: xfrm: espintcp: do not reuse an in-progress partial send espintcp keeps a single in-flight transmit in ctx->partial. Before building a new sk_msg, espintcp_sendmsg() first tries to flush that…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-64009

    xfrm: Check for underflow in xfrm_state_mtu

    In the Linux kernel, the following vulnerability has been resolved: xfrm: Check for underflow in xfrm_state_mtu Leo Lin reported OOB write issue in esp component: xfrm_state_mtu() returns u32 but performs its arithmetic in unsigned modulo-2^32 space using an …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-93288

    netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state sashiko reports: "nfnl_log_net_exit() calls nf_log_unset(), which clears the logger pointer without an RCU grac…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-93817

    perf: Fix addr_filter_ranges lifetime

    In the Linux kernel, the following vulnerability has been resolved: perf: Fix addr_filter_ranges lifetime Lee Jia Jie reported that since event::addr_filter_ranges is used under RCU, it should be RCU freed.

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-98320

    netfilter: flowtable: hold reference on ct until flow is released

    In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: hold reference on ct until flow is released nf_ct_put() releases the ct->ext area inmediately, the rcu typesafe semantics also allow to refer to the wrong conntrack from…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Medium 6.8
    CVE-2026-53196

    USB: serial: io_ti: fix heap overflow in get_manuf_info()

    In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_ti: fix heap overflow in get_manuf_info() get_manuf_info() reads le16_to_cpu(rom_desc->Size) bytes from the device I2C EEPROM into a buffer allocated with kmalloc_obj(), which…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492098
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492750
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2521384
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2524422
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532089
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532290
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2540391
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2540500
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2540872
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2546494
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_85773.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-52935
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-52935
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-52935
  • article
    https://kernelcve.org/list/?q=CVE-2026-52935
  • article
    https://lore.kernel.org/linux-cve-announce/2026062433-CVE-2026-52935-7909@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-53196
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-53196
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-53196
  • article
    https://lore.kernel.org/linux-cve-announce/2026062559-CVE-2026-53196-bcc6@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-64009
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502403
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-64009
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-64009
  • article
    https://lore.kernel.org/linux-cve-announce/2026071908-CVE-2026-64009-4587@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-74588
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-74588
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-74588
  • article
    https://lore.kernel.org/linux-cve-announce/2026082212-CVE-2026-74588-29ed@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-74752
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-74752
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-74752
  • article
    https://lore.kernel.org/linux-cve-announce/2026082600-CVE-2026-74752-6509@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-89479
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-89479
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-89479
  • article
    https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89479.mbox
  • report
    https://access.redhat.com/security/cve/CVE-2026-89631