Red Hat alert RHSA-2025:22387-01 (kernel-rt)

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of
Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

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.

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Original: https://access.redhat.com/security/data/csaf/v2/advisories/2025/rhsa-2025_22387.json