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Critical RHSA-2026:64775 22 CVEs

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

Published Sep 9, 2026 · Updated Nov 13, 2026

Fixed packages 90

ReleasePackageFixed in
Red Hat · RHEL 10 enterprise_linux:10.2 kernel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-debug 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-debug-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-debug-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-debug-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-debug-devel-matched 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-debug-modules 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-debug-modules-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-debug-modules-extra 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-devel-matched 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-modules 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-modules-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-64k-modules-extra 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-abi-stablelists 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debug 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debug-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debug-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debug-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debug-devel-matched 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debug-modules 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debug-modules-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debug-modules-extra 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debug-uki-virt 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debuginfo-common-aarch64 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debuginfo-common-ppc64le 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debuginfo-common-s390x 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-debuginfo-common-x86_64 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-devel-matched 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-doc 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-modules 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-modules-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-modules-extra 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-modules-extra-matched 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-debug 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-debug-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-debug-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-debug-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-debug-modules 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-debug-modules-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-debug-modules-extra 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-modules 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-modules-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-64k-modules-extra 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-debug 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-debug-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-debug-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-debug-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-debug-modules 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-debug-modules-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-debug-modules-extra 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-modules 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-modules-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-rt-modules-extra 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-tools 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-tools-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-tools-libs 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-tools-libs-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-uki-virt 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-uki-virt-addons 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-zfcpdump 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-zfcpdump-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-zfcpdump-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-zfcpdump-devel 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-zfcpdump-devel-matched 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-zfcpdump-modules 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-zfcpdump-modules-core 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 kernel-zfcpdump-modules-extra 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 libperf 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 libperf-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 perf 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 perf-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 python3-perf 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 python3-perf-debuginfo 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 rtla 0:6.12.0-211.52.1.el10_2
Red Hat · RHEL 10 enterprise_linux:10.2 rv 0:6.12.0-211.52.1.el10_2

Vulnerabilities 22

  • Critical 9.8

    ipv6: sit: reload inner IPv6 header after GSO offloads

    In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6_tunnel_xmit() caches the inner IPv6 header pointer at function entry and continues using it after iptunnel_handle_offloads(). For …

  • Critical 9.8

    vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()

    In the Linux kernel, the following vulnerability has been resolved: vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu() skb_tunnel_check_pmtu() can change skb->head. Reusing old_iph afer skb_tunnel_check_pmtu() can cause an UAF. Use instea…

  • Critical 9.8

    smb: client: fix double-free in SMB2_close() replay

    In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_close() replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_close_init() fails before the next send, cle…

  • Critical 9.1

    inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP

    In the Linux kernel, the following vulnerability has been resolved: inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP Yizhou Zhao reported that simply having one RAW socket on protocol IPPROTO_RAW (255) was dangerous. socket(AF_INET, SOCK_RAW, 255);…

  • Critical 9.1

    nvmet-auth: validate reply message payload bounds against transfer length

    In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: validate reply message payload bounds against transfer length nvmet_auth_reply() accesses the variable-length rval[] array using attacker-controlled hl (hash length) and dhvlen (D…

  • High 8.8
    CVE-2026-53075 Public exploit

    ppp: require CAP_NET_ADMIN in target netns for unattached ioctls

    In the Linux kernel, the following vulnerability has been resolved: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls /dev/ppp open is currently authorized against file->f_cred->user_ns, while unattached administrative ioctls operate on current…

  • High 8.8

    ipv6: mcast: Fix use-after-free when processing MLD queries

    In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: Fix use-after-free when processing MLD queries When processing an MLD query, a pointer to the multicast group address is retrieved when initially parsing the packet. This pointer…

  • High 8.8

    KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation

    In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walk_s1() and kvm_walk_nested_s2() expect to be called while holding kvm->srcu to guard against memslot…

  • High 8.2

    KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU

    In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU flush_hyp_vcpu() copies the host vGIC state into the hyp's private vCPU on every run. The vGIC list register save and restore use us…

  • High 7.8

    ipv6: prevent possible UaF in addrconf_permanent_addr()

    In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UaF in addrconf_permanent_addr() The mentioned helper try to warn the user about an exceptional condition, but the message is delivered too late, accessing the ipv6 aft…

  • High 7.8

    tcp: call sk_data_ready() after listener migration

    In the Linux kernel, the following vulnerability has been resolved: tcp: call sk_data_ready() after listener migration When inet_csk_listen_stop() migrates an established child socket from a closing listener to another socket in the same SO_REUSEPORT group, t…

  • High 7.8

    io_uring/poll: fix signed comparison in io_poll_get_ownership()

    In the Linux kernel, the following vulnerability has been resolved: io_uring/poll: fix signed comparison in io_poll_get_ownership() io_poll_get_ownership() uses a signed comparison to check whether poll_refs has reached the threshold for the slowpath: if (unl…

  • High 7.8

    ipv6: anycast: insert aca into global hash under idev->lock

    In the Linux kernel, the following vulnerability has been resolved: ipv6: anycast: insert aca into global hash under idev->lock syzbot reported a splat [1]: a slab-use-after-free in ipv6_chk_acast_addr(), which walks the global inet6_acaddr_lst[] hash under R…

  • High 7.8

    ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

    In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon. Only after unr…

  • High 7.8

    fuse: clear intr_entry in fuse_resend and fuse_remove_pending_req

    In the Linux kernel, the following vulnerability has been resolved: fuse: clear intr_entry in fuse_resend and fuse_remove_pending_req When fuse_resend() moves a request from fpq->processing back to fiq->pending, it sets FR_PENDING and clears FR_SENT but does …

  • High 7.8
    CVE-2026-64563 Public exploit

    rhashtable: clear stale iter->p on table restart

    In the Linux kernel, the following vulnerability has been resolved: rhashtable: clear stale iter->p on table restart rhashtable_walk_start_check() has two restart paths when resuming a walk. When iter->walker.tbl is valid, it re-validates iter->p against the …

  • High 7.5

    flow_dissector: do not dissect PPPoE PFC frames

    In the Linux kernel, the following vulnerability has been resolved: flow_dissector: do not dissect PPPoE PFC frames RFC 2516 Section 7 states that Protocol Field Compression (PFC) is NOT RECOMMENDED for PPPoE. In practice, pppd does not support negotiating PF…

  • High 7.5

    net: add pskb_may_pull() to skb_gro_receive_list()

    In the Linux kernel, the following vulnerability has been resolved: net: add pskb_may_pull() to skb_gro_receive_list() skb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without first ensuring the data is in the linear area via pskb_may_pull(). W…

  • High 7.3

    can: bcm: add locking for bcm_op runtime updates

    In the Linux kernel, the following vulnerability has been resolved: can: bcm: add locking for bcm_op runtime updates The CAN broadcast manager (CAN BCM) can send a sequence of CAN frames via hrtimer. The content and also the length of the sequence can be chan…

  • High 7.1

    net: guard timestamp cmsgs to real error queue skbs

    In the Linux kernel, the following vulnerability has been resolved: net: guard timestamp cmsgs to real error queue skbs skb_is_err_queue() treats PACKET_OUTGOING as the sole marker for an skb from sk_error_queue. That assumption is not true for AF_PACKET sock…

  • Unscored —

    ipv6: add NULL checks for idev in SRv6 paths

    In the Linux kernel, the following vulnerability has been resolved: ipv6: add NULL checks for idev in SRv6 paths __in6_dev_get() can return NULL when the device has no IPv6 configuration (e.g. MTU < IPV6_MIN_MTU or after NETDEV_UNREGISTER). Add NULL checks fo…

  • Unscored —

    udp: Fix wildcard bind conflict check when using hash2

    In the Linux kernel, the following vulnerability has been resolved: udp: Fix wildcard bind conflict check when using hash2 When binding a udp_sock to a local address and port, UDP uses two hashes (udptable->hash and udptable->hash2) for collision detection. T…

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2370992
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2454807
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2460736
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2468102
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2481936
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2484456
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2486463
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492097
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492295
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492725
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492733
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492745
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492811
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492841
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2492850
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502363
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502369
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2507041
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2507096
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2507129
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2510892
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2511932
  • article
    https://issues.redhat.com/browse/RHEL-132852
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_64775.json
  • report
    https://access.redhat.com/security/cve/CVE-2025-38004
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2025-38004
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2025-38004
  • article
    https://lore.kernel.org/linux-cve-announce/2025060801-CVE-2025-38004-30d2@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-23442
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-23442
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-23442
  • article
    https://lore.kernel.org/linux-cve-announce/2026040314-CVE-2026-23442-fe23@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-31503
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-31503
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-31503
  • article
    https://lore.kernel.org/linux-cve-announce/2026042206-CVE-2026-31503-602a@gregkh/T
  • report
    https://access.redhat.com/security/cve/CVE-2026-43339
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-43339