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High ALSA-2026:57253 9 CVEs

Important: kernel security, bug fix, and enhancement update

Published Aug 20, 2026 · Updated Oct 29, 2026

Ecosystem: AlmaLinux

Summary

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

Security Fix(es):

* kernel: net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() (CVE-2024-56602)
* kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() (CVE-2026-46120)
* kernel: sched/psi: fix race between file release and pressure write (CVE-2026-52991)
* kernel: mm/huge_memory: update file PMD counter before folio_put() (CVE-2026-53189)
* kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (CVE-2026-63888)
* kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (CVE-2026-63887)
* kernel: net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot (CVE-2026-64048)
* kernel: smb: client: mask server-provided mode to 07777 in modefromsid (CVE-2026-64379)
* kernel: smb/client: handle overlapping allocated ranges in fallocate (CVE-2026-68388)

Bug Fix(es) and Enhancement(s):

* sfc: TX queue stalls and NIC resets caused by GFP_ATOMIC allocation failures after AlmaLinux 8.10 kernel update (JIRA:AlmaLinux-219767)

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 25

ReleasePackageFixed in
AlmaLinux · 8 bpftool 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-abi-stablelists 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-core 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-cross-headers 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-debug 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-debug-core 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-debug-devel 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-debug-modules 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-debug-modules-extra 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-devel 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-doc 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-headers 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-modules 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-modules-extra 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-tools 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-tools-libs 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-tools-libs-devel 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-zfcpdump 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-core 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-devel 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-modules 4.18.0-553.157.1.el8_10
AlmaLinux · 8 kernel-zfcpdump-modules-extra 4.18.0-553.157.1.el8_10
AlmaLinux · 8 perf 4.18.0-553.157.1.el8_10
AlmaLinux · 8 python3-perf 4.18.0-553.157.1.el8_10

Vulnerabilities 9

  • Critical 9.8
    CVE-2026-63887

    scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf

    In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf iscsi_encode_text_output() concatenates "key=value\0" records into login->rsp_buf, an 8192-byte kzalloc(MAX_KEY_VALUE_…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2026-63888

    scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd()

    In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() Two latent bugs in the Text-phase handler, both present since the original LIO integration in commit e48354ce…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.8
    CVE-2026-68388

    smb/client: handle overlapping allocated ranges in fallocate

    In the Linux kernel, the following vulnerability has been resolved: smb/client: handle overlapping allocated ranges in fallocate smb3_simple_fallocate_range() can skip holes when an allocated range returned by the server starts before the current fallocate of…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2026-46120

    ip6_gre: Use cached t->net in ip6erspan_changelink().

    In the Linux kernel, the following vulnerability has been resolved: ip6_gre: Use cached t->net in ip6erspan_changelink(). After commit 5e72ce3e3980 ("net: ipv6: Use link netns in newlink() of rtnl_link_ops"), ip6erspan_newlink() correctly resolves the per-net…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-52991

    sched/psi: fix race between file release and pressure write

    In the Linux kernel, the following vulnerability has been resolved: sched/psi: fix race between file release and pressure write A potential race condition exists between pressure write and cgroup file release regarding the priv member of struct kernfs_open_fi…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2026-53189

    mm/huge_memory: update file PMD counter before folio_put()

    In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: update file PMD counter before folio_put() __split_huge_pmd_locked() updates the file/shmem RSS counter after dropping the PMD mapping's folio reference. If folio_put() drops …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.5
    CVE-2026-64048

    net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot

    In the Linux kernel, the following vulnerability has been resolved: net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot On the SMC-D client, slot 0 of ini->ism_dev[]/ini->ism_chid[] is reserved for an SMC-Dv1 device. smc_find_ism_v2_device_clnt()…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.1
    CVE-2026-64379

    smb: client: mask server-provided mode to 07777 in modefromsid

    In the Linux kernel, the following vulnerability has been resolved: smb: client: mask server-provided mode to 07777 in modefromsid When modefromsid is active, parse_dacl() applies the server-provided sub_auth[2] value from the NFS mode SID to cf_mode without …

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.0
    CVE-2024-56602

    net: ieee802154: do not leave a dangling sk pointer in ieee802154_create()

    In the Linux kernel, the following vulnerability has been resolved: net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() sock_init_data() attaches the allocated sk object to the provided sock object. If ieee802154_create() fails later, t…

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

References

  • report
    https://access.redhat.com/security/cve/CVE-2024-56602
  • report
    https://access.redhat.com/security/cve/CVE-2026-46120
  • report
    https://access.redhat.com/security/cve/CVE-2026-52991
  • report
    https://access.redhat.com/security/cve/CVE-2026-53189
  • report
    https://access.redhat.com/security/cve/CVE-2026-63887
  • report
    https://access.redhat.com/security/cve/CVE-2026-63888
  • report
    https://access.redhat.com/security/cve/CVE-2026-64048
  • report
    https://access.redhat.com/security/cve/CVE-2026-64379
  • report
    https://access.redhat.com/security/cve/CVE-2026-68388
  • report
    https://bugzilla.redhat.com/2334501
  • report
    https://bugzilla.redhat.com/2482614
  • report
    https://bugzilla.redhat.com/2492403
  • report
    https://bugzilla.redhat.com/2492788
  • report
    https://bugzilla.redhat.com/2502443
  • report
    https://bugzilla.redhat.com/2502447
  • report
    https://bugzilla.redhat.com/2502589
  • report
    https://bugzilla.redhat.com/2507135
  • report
    https://bugzilla.redhat.com/2513470
  • advisory
    https://errata.almalinux.org/8/ALSA-2026-57253.html