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OpenAdvisories
Critical RHSA-2026:1512 6 CVEs

Red Hat Security Advisory: kernel security update

Published Jan 29, 2026 · Updated Aug 5, 2026

Ecosystem: Red Hat

Fixed packages 24

ReleasePackageFixed in
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos bpftool 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos bpftool-debuginfo 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-abi-whitelists 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-core 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-core 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-debuginfo 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-devel 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-modules 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-modules-extra 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debuginfo 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debuginfo-common-x86_64 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-devel 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-doc 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-modules 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-modules-extra 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-tools 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-tools-debuginfo 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-tools-libs 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos perf 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos perf-debuginfo 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos python3-perf 0:4.18.0-193.183.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos python3-perf-debuginfo 0:4.18.0-193.183.1.el8_2

Vulnerabilities 6

  • Critical 9.8
    CVE-2023-53751

    cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname

    In the Linux kernel, the following vulnerability has been resolved: cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname TCP_Server_Info::hostname may be updated once or many times during reconnect, so protect its access outside reconnect path…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 8.2
    CVE-2023-53705

    ipv6: Fix out-of-bounds access in ipv6_find_tlv()

    In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix out-of-bounds access in ipv6_find_tlv() optlen is fetched without checking whether there is more than one byte to parse. It can lead to out-of-bounds access. Found by InfoTeCS on be…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-39993

    media: rc: fix races with imon_disconnect()

    In the Linux kernel, the following vulnerability has been resolved: media: rc: fix races with imon_disconnect() Syzbot reports a KASAN issue as below: BUG: KASAN: use-after-free in __create_pipe include/linux/usb.h:1945 [inline] BUG: KASAN: use-after-free in …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-40248

    vsock: Ignore signal/timeout on connect() if already established

    In the Linux kernel, the following vulnerability has been resolved: vsock: Ignore signal/timeout on connect() if already established During connect(), acting on a signal/timeout by disconnecting an already established socket leads to several issues: 1. connec…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-40277

    drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE

    In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE This data originates from userspace and is used in buffer offset calculations which could potentially overflow causing a…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2025-39898 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=2400598
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2404121
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2405713
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2418872
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2419858
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2419954
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_1512.json
  • report
    https://access.redhat.com/security/cve/CVE-2023-53705
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53705
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53705
  • article
    https://lore.kernel.org/linux-cve-announce/2025102212-CVE-2023-53705-38d9@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2023-53751
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-53751
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-53751
  • article
    https://lore.kernel.org/linux-cve-announce/2025120842-CVE-2023-53751-2ff2@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39898
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39898
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39898
  • article
    https://lore.kernel.org/linux-cve-announce/2025100116-CVE-2025-39898-d844@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-39993
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-39993
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-39993
  • article
    https://lore.kernel.org/linux-cve-announce/2025101527-CVE-2025-39993-caef@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-40248
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-40248
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-40248
  • article
    https://lore.kernel.org/linux-cve-announce/2025120430-CVE-2025-40248-506e@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-40277
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-40277
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-40277
  • article
    https://lore.kernel.org/linux-cve-announce/2025120717-CVE-2025-40277-d511@gregkh/T