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Medium ALSA-2026:2282 8 CVEs

Moderate: kernel security update

Published Feb 9, 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: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation (CVE-2025-38415)
* kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it (CVE-2025-38403)
* kernel: Linux kernel: Data corruption and system instability due to improper io_uring/net buffer handling (CVE-2025-38730)
* kernel: smb: client: let recv_done verify data_offset, data_length and remaining_data_length (CVE-2025-39933)
* kernel: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable() (CVE-2025-40133)
* kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. (CVE-2025-40304)
* kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling (CVE-2025-40322)
* kernel: svcrdma: use rc_pageoff for memcpy byte offset (CVE-2025-68811)

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 2

ReleasePackageFixed in
AlmaLinux · 10 kernel-abi-stablelists 6.12.0-124.35.1.el10_1
AlmaLinux · 10 kernel-doc 6.12.0-124.35.1.el10_1

Vulnerabilities 8

  • Critical 9.8
    CVE-2025-68811

    svcrdma: use rc_pageoff for memcpy byte offset

    In the Linux kernel, the following vulnerability has been resolved: svcrdma: use rc_pageoff for memcpy byte offset svc_rdma_copy_inline_range added rc_curpage (page index) to the page base instead of the byte offset rc_pageoff. Use rc_pageoff so copies land w…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Critical 9.4
    CVE-2025-39933

    smb: client: let recv_done verify data_offset, data_length and remaining_data_length

    In the Linux kernel, the following vulnerability has been resolved: smb: client: let recv_done verify data_offset, data_length and remaining_data_length This is inspired by the related server fixes.

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 8.1
    CVE-2025-40133

    mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().

    In the Linux kernel, the following vulnerability has been resolved: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable(). mptcp_active_enable() is called from subflow_finish_connect(), which is icsk->icsk_af_ops->sk_rx_dst_set() and it's not a…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.8
    CVE-2025-38730

    io_uring/net: commit partial buffers on retry

    In the Linux kernel, the following vulnerability has been resolved: io_uring/net: commit partial buffers on retry Ring provided buffers are potentially only valid within the single execution context in which they were acquired. io_uring deals with this and in…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-40304

    fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds

    In the Linux kernel, the following vulnerability has been resolved: fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds Add bounds checking to prevent writes past framebuffer boundaries when rendering text near screen edges. Return early if t…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • High 7.1
    CVE-2025-40322

    fbdev: bitblit: bound-check glyph index in bit_putcs*

    In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bit_putcs* bit_putcs_aligned()/unaligned() derived the glyph pointer from the character value masked by 0xff/0x1ff, which may exceed the actual font…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2025-38403

    vsock/vmci: Clear the vmci transport packet properly when initializing it

    In the Linux kernel, the following vulnerability has been resolved: vsock/vmci: Clear the vmci transport packet properly when initializing it In vmci_transport_packet_init memset the vmci_transport_packet before populating the fields to avoid any uninitialise…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2025-38415

    Squashfs: check return result of sb_min_blocksize

    In the Linux kernel, the following vulnerability has been resolved: Squashfs: check return result of sb_min_blocksize Syzkaller reports an "UBSAN: shift-out-of-bounds in squashfs_bio_read" bug. Syzkaller forks multiple processes which after mounting the Squas…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu

References

  • report
    https://access.redhat.com/security/cve/CVE-2025-38403
  • report
    https://access.redhat.com/security/cve/CVE-2025-38415
  • report
    https://access.redhat.com/security/cve/CVE-2025-38730
  • report
    https://access.redhat.com/security/cve/CVE-2025-39933
  • report
    https://access.redhat.com/security/cve/CVE-2025-40133
  • report
    https://access.redhat.com/security/cve/CVE-2025-40304
  • report
    https://access.redhat.com/security/cve/CVE-2025-40322
  • report
    https://access.redhat.com/security/cve/CVE-2025-68811
  • report
    https://bugzilla.redhat.com/2383404
  • report
    https://bugzilla.redhat.com/2383421
  • report
    https://bugzilla.redhat.com/2393191
  • report
    https://bugzilla.redhat.com/2401432
  • report
    https://bugzilla.redhat.com/2414465
  • report
    https://bugzilla.redhat.com/2419870
  • report
    https://bugzilla.redhat.com/2419902
  • report
    https://bugzilla.redhat.com/2429116
  • advisory
    https://errata.almalinux.org/10/ALSA-2026-2282.html