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OpenAdvisories
High ALSA-2026:95370 16 CVEs

Important: kernel security update

Published Nov 5, 2026 · Updated Nov 5, 2026

Ecosystem: AlmaLinux

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: net/smc: fix UAF in smc_cdc_rx_handler() by pinning the socket (CVE-2026-64541)
* kernel: sctp: avoid auth_enable sysctl UAF during netns teardown (CVE-2026-68162)
* kernel: s390/zcrypt: Validate length for CCA AES cipher key requests (CVE-2026-68452)
* kernel: s390/zcrypt: Validate length for CCA ECC private key requests (CVE-2026-68451)
* kernel: sunrpc: pin svc_xprt across the asynchronous TLS handshake callback (CVE-2026-72222)
* kernel: sunrpc: wait for in-flight TLS handshake callback when cancel loses race (CVE-2026-72221)
* kernel: fs/resctrl: Fix use-after-free during unmount (CVE-2026-72080)
* kernel: sctp: keep chunk->transport in step with the list it is queued on (CVE-2026-74588)
* kernel: sctp: clear new_transport when removing a peer (CVE-2026-74586)
* kernel: sctp: validate cookie AUTH state before use (CVE-2026-74752)
* kernel: s390/vfio_ccw: Cancel existing workqueues (CVE-2026-80553)
* kernel: powerpc/pseries: papr-phy-attest - validate cmd.length, plug mem leak (CVE-2026-80571)
* kernel: s390/qeth: validate user buffer length in SNMP and ARP query ioctls (CVE-2026-80584)
* kernel: sctp: stop processing a packet once its association is deleted (CVE-2026-89479)
* kernel: openvswitch: Fix CT limit teardown use-after-free (CVE-2026-89488)
* kernel: s390/boot: Avoid IPL parameter append past command line (CVE-2026-98403)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 74

ReleasePackageFixed in
AlmaLinux · 9 kernel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-debug 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-debug-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-debug-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-debug-devel-matched 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-debug-modules 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-debug-modules-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-debug-modules-extra 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-devel-matched 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-modules 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-modules-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-64k-modules-extra 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-abi-stablelists 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-cross-headers 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-debug 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-debug-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-debug-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-debug-devel-matched 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-debug-modules 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-debug-modules-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-debug-modules-extra 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-debug-uki-virt 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-devel-matched 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-doc 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-headers 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-modules 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-modules-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-modules-extra 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-modules 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-modules-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-debug-modules-extra 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-modules 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-modules-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-64k-modules-extra 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-debug 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-debug-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-debug-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-debug-modules 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-debug-modules-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-debug-modules-extra 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-modules 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-modules-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-rt-modules-extra 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-tools 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-tools-libs 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-tools-libs-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-uki-virt 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-uki-virt-addons 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-zfcpdump 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-devel 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-devel-matched 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-modules 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-modules-core 5.14.0-687.66.1.el9_8
AlmaLinux · 9 kernel-zfcpdump-modules-extra 5.14.0-687.66.1.el9_8
AlmaLinux · 9 libperf 5.14.0-687.66.1.el9_8
AlmaLinux · 9 perf 5.14.0-687.66.1.el9_8
AlmaLinux · 9 python3-perf 5.14.0-687.66.1.el9_8
AlmaLinux · 9 rtla 5.14.0-687.66.1.el9_8
AlmaLinux · 9 rv 5.14.0-687.66.1.el9_8

Vulnerabilities 16

  • Critical 9.8
    CVE-2026-64541

    net/smc: fix UAF in smc_cdc_rx_handler() by pinning the socket

    In the Linux kernel, the following vulnerability has been resolved: net/smc: fix UAF in smc_cdc_rx_handler() by pinning the socket smc_cdc_rx_handler() looks up the connection by token under the link group's conns_lock, drops the lock, and then dereferences c…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Critical 9.8
    CVE-2026-72221

    sunrpc: wait for in-flight TLS handshake callback when cancel loses race

    In the Linux kernel, the following vulnerability has been resolved: sunrpc: wait for in-flight TLS handshake callback when cancel loses race When wait_for_completion_interruptible_timeout() in svc_tcp_handshake() returns 0 (timeout) or -ERESTARTSYS (signal) a…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2026-72222

    sunrpc: pin svc_xprt across the asynchronous TLS handshake callback

    In the Linux kernel, the following vulnerability has been resolved: sunrpc: pin svc_xprt across the asynchronous TLS handshake callback svc_tcp_handshake() stores the raw svc_xprt pointer in tls_handshake_args.ta_data and submits the request through tls_serve…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2026-74586 Public exploit

    sctp: clear new_transport when removing a peer

    In the Linux kernel, the following vulnerability has been resolved: sctp: clear new_transport when removing a peer sctp_process_asconf_param() stores a newly added peer transport in asoc->new_transport. After all parameters in the ASCONF chunk have been proce…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • 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
  • High 8.8
    CVE-2026-80553

    s390/vfio_ccw: Cancel existing workqueues

    In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Cancel existing workqueues The initialization of the io_work and crw_work workqueues begs the question of whether they should be un-initialized. Add the corresponding cleanup t…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 8.4
    CVE-2026-80584

    s390/qeth: validate user buffer length in SNMP and ARP query ioctls

    In the Linux kernel, the following vulnerability has been resolved: s390/qeth: validate user buffer length in SNMP and ARP query ioctls qeth_snmp_command() and qeth_l3_arp_query() allocate a buffer sized by a user-supplied length (udata_len) without checking …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-68162

    sctp: avoid auth_enable sysctl UAF during netns teardown

    In the Linux kernel, the following vulnerability has been resolved: sctp: avoid auth_enable sysctl UAF during netns teardown proc_sctp_do_auth() updates the SCTP control socket after changing net.sctp.auth_enable. The handler gets the per-net SCTP state from …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-68451

    s390/zcrypt: Validate length for CCA ECC private key requests

    In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA ECC private key requests cca_ecc2protkey() derives the copy length for the CPRB parameter block directly from the length field in the key token. Reject th…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-68452

    s390/zcrypt: Validate length for CCA AES cipher key requests

    In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA AES cipher key requests cca_cipher2protkey() derives the copy length for the CPRB parameter block directly from the length field in the key token. Reject …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-72080

    fs/resctrl: Fix use-after-free during unmount

    In the Linux kernel, the following vulnerability has been resolved: fs/resctrl: Fix use-after-free during unmount During unmount or failure teardown all mon_data structures that contain monitoring event file private data are freed after which kernfs nodes are…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-89488

    openvswitch: Fix CT limit teardown use-after-free

    In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fix CT limit teardown use-after-free Packet processing uses CT limit state under RCU, while netns teardown frees that state under ovs_mutex. The CT limit pointer was neither remo…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2026-80571

    powerpc/pseries: papr-phy-attest - validate cmd.length, plug mem leak

    In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: papr-phy-attest - validate cmd.length, plug mem leak In papr_phy_attest_create_handle(), the params->cmd.length is not validated before use, which can result in a buffer over…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2026-98403

    s390/boot: Avoid IPL parameter append past command line

    In the Linux kernel, the following vulnerability has been resolved: s390/boot: Avoid IPL parameter append past command line A command line may occupy all but the terminating byte of COMMAND_LINE_SIZE. In that case append_ipl_block_parm() passes a zero size to…

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

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-64541
  • report
    https://access.redhat.com/security/cve/CVE-2026-68162
  • report
    https://access.redhat.com/security/cve/CVE-2026-68451
  • report
    https://access.redhat.com/security/cve/CVE-2026-68452
  • report
    https://access.redhat.com/security/cve/CVE-2026-72080
  • report
    https://access.redhat.com/security/cve/CVE-2026-72221
  • report
    https://access.redhat.com/security/cve/CVE-2026-72222
  • report
    https://access.redhat.com/security/cve/CVE-2026-74586
  • report
    https://access.redhat.com/security/cve/CVE-2026-74588
  • report
    https://access.redhat.com/security/cve/CVE-2026-74752
  • report
    https://access.redhat.com/security/cve/CVE-2026-80553
  • report
    https://access.redhat.com/security/cve/CVE-2026-80571
  • report
    https://access.redhat.com/security/cve/CVE-2026-80584
  • report
    https://access.redhat.com/security/cve/CVE-2026-89479
  • report
    https://access.redhat.com/security/cve/CVE-2026-89488
  • report
    https://access.redhat.com/security/cve/CVE-2026-98403
  • report
    https://bugzilla.redhat.com/2507721
  • report
    https://bugzilla.redhat.com/2513314
  • report
    https://bugzilla.redhat.com/2515351
  • report
    https://bugzilla.redhat.com/2515353
  • report
    https://bugzilla.redhat.com/2516278
  • report
    https://bugzilla.redhat.com/2516412
  • report
    https://bugzilla.redhat.com/2516674
  • report
    https://bugzilla.redhat.com/2521384
  • report
    https://bugzilla.redhat.com/2521419
  • report
    https://bugzilla.redhat.com/2524422
  • report
    https://bugzilla.redhat.com/2524442
  • report
    https://bugzilla.redhat.com/2524458
  • report
    https://bugzilla.redhat.com/2524475
  • report
    https://bugzilla.redhat.com/2532290
  • report
    https://bugzilla.redhat.com/2532407
  • report
    https://bugzilla.redhat.com/2552209
  • advisory
    https://errata.almalinux.org/9/ALSA-2026-95370.html