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OpenAdvisories
High 1 exploited CVE RHSA-2025:15656 6 CVEs

Red Hat Security Advisory: kernel security update

Published Sep 11, 2025 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 23

ReleasePackageFixed in
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos bpftool 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos bpftool-debuginfo 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-abi-whitelists 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-core 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-core 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-debuginfo 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-devel 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-modules 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debug-modules-extra 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debuginfo 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-debuginfo-common-x86_64 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-devel 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-modules 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-modules-extra 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-tools 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-tools-debuginfo 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos kernel-tools-libs 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos perf 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos perf-debuginfo 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos python3-perf 0:4.18.0-193.168.1.el8_2
Red Hat · RHEL 8.2 AUS rhel_aus:8.2::baseos python3-perf-debuginfo 0:4.18.0-193.168.1.el8_2

Vulnerabilities 6

  • High 7.8
    CVE-2025-38352 Exploited Public exploit

    posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()

    In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() If an exiting non-autoreaping task has already passed exit_notify() and calls handle_posix_cpu_timers() …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
    KEV Sep 4, 2025
  • High 7.8
    CVE-2025-21759

    ipv6: mcast: extend RCU protection in igmp6_send()

    In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: extend RCU protection in igmp6_send() igmp6_send() can be called without RTNL or RCU being held. Extend RCU protection so that we can safely fetch the net pointer and avoid a pot…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-38464

    tipc: Fix use-after-free in tipc_conn_close().

    In the Linux kernel, the following vulnerability has been resolved: tipc: Fix use-after-free in tipc_conn_close(). syzbot reported a null-ptr-deref in tipc_conn_close() during netns dismantle. [0] tipc_topsrv_stop() iterates tipc_net(net)->topsrv->conn_idr an…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Medium 6.7
    CVE-2023-2513

    A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode si…

    linux-raspi2 linux-hwe linux-azure linux-riscv Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2022-50211

    md-raid10: fix KASAN warning

    In the Linux kernel, the following vulnerability has been resolved: md-raid10: fix KASAN warning There's a KASAN warning in raid10_remove_disk when running the lvm test lvconvert-raid-reshape.sh. We fix this warning by verifying that the value "number" is val…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2025-22058

    udp: Fix memory accounting leak.

    In the Linux kernel, the following vulnerability has been resolved: udp: Fix memory accounting leak. Matt Dowling reported a weird UDP memory usage issue. Under normal operation, the UDP memory usage reported in /proc/net/sockstat remains close to zero. Howev…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2193097
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2348596
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2360276
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2373662
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2382581
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2383509
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_15656.json
  • report
    https://access.redhat.com/security/cve/CVE-2022-50211
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2022-50211
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2022-50211
  • article
    https://lore.kernel.org/linux-cve-announce/2025061843-CVE-2022-50211-393a@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2023-2513
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2023-2513
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2023-2513
  • report
    https://access.redhat.com/security/cve/CVE-2025-21759
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-21759
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-21759
  • article
    https://kernelcve.org/list/?q=CVE-2025-21759
  • article
    https://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21759-ad7c@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-22058
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-22058
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-22058
  • article
    https://lore.kernel.org/linux-cve-announce/2025041606-CVE-2025-22058-045a@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2025-38352
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38352
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38352
  • article
    https://kernelcve.org/list/?q=CVE-2025-38352
  • article
    https://lore.kernel.org/linux-cve-announce/2025072229-CVE-2025-38352-f1de@gregkh/T
  • article
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog
  • report
    https://access.redhat.com/security/cve/CVE-2025-38464
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38464
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38464
  • article
    https://lore.kernel.org/linux-cve-announce/2025072508-CVE-2025-38464-44a1@gregkh/T