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OpenAdvisories
Medium RLSA-2025:22387 6 CVEs

Moderate: kernel-rt security update

Published Dec 4, 2025 · Updated Dec 5, 2025

Ecosystem: Rocky Linux

Summary

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() (CVE-2025-38724)

* kernel: smb: client: fix race with concurrent opens in rename(2) (CVE-2025-39825)

* kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory (CVE-2025-39883)

* kernel: e1000e: fix heap overflow in e1000_set_eeprom (CVE-2025-39898)

* kernel: nbd: fix incomplete validation of ioctl arg (CVE-2023-53513)

* kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect() (CVE-2025-39955)

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 1

ReleasePackageFixed in
Rocky Linux · 8 kernel-rt 0:4.18.0-553.87.1.rt7.428.el8_10

Vulnerabilities 6

  • Critical 9.8
    CVE-2025-38724

    nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()

    In the Linux kernel, the following vulnerability has been resolved: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() Lei Lu recently reported that nfsd4_setclientid_confirm() did not check the return value from get_client_locked(). a SE…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • High 7.8
    CVE-2025-39825

    smb: client: fix race with concurrent opens in rename(2)

    In the Linux kernel, the following vulnerability has been resolved: smb: client: fix race with concurrent opens in rename(2) Besides sending the rename request to the server, the rename process also involves closing any deferred close, waiting for outstanding…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2023-53513

    nbd: fix incomplete validation of ioctl arg

    In the Linux kernel, the following vulnerability has been resolved: nbd: fix incomplete validation of ioctl arg We tested and found an alarm caused by nbd_ioctl arg without verification. The UBSAN warning calltrace like below: UBSAN: Undefined behaviour in fs…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  • Unscored —
    CVE-2025-39883

    mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory

    In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory When I did memory failure tests, below panic occurs: page dumped because: VM_BUG_ON_PAGE(PagePoisoned(page)) ker…

    Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  • Unscored —
    CVE-2025-39898 Rejected

    This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

    linux-raspi2 linux-hwe linux-azure linux-riscv Ubuntu
  • Unscored —
    CVE-2025-39955

    tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect().

    In the Linux kernel, the following vulnerability has been resolved: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). syzbot reported the splat below where a socket had tcp_sk(sk)->fastopen_rsk in the TCP_ESTABLISHED state. [0] syzbot reused the server…

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

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2393172
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2395792
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2397553
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2400598
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2400795
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2402699