Not ratedosv:RXSA-2026:90365

    Important: kernel security, bug fix, and enhancement update

    Published Sources: OSV

    What is affected, what to do

    The available sources name no fixed version. Check the vendor guidance in the references below.

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

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    Priority

    No value is available for this vulnerability.

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    CVSS v3

    No value is available for this vulnerability.

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    EPSS score

    No value is available for this vulnerability.

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    Severity
    Not rated
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

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    30.00 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

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    no public PoC known
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

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    Published

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

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    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

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    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

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

    Security Fix(es):

    • kernel: udp: Deal with race between UDP socket address change and rehash (CVE-2024-57974)

    • kernel: fuse: re-lock request before replacing page cache folio (CVE-2026-53388)

    • kernel: net/handshake: hand off the pinned file reference to accept_doit (CVE-2026-63979)

    • kernel: net/handshake: Drain pending requests at net namespace exit (CVE-2026-63978)

    • kernel: fuse: re-lock request before returning from fuse_ref_folio() (CVE-2026-64266)

    • kernel: net/handshake: Take a long-lived file reference at submit (CVE-2026-64523)

    • kernel: ipvs: reload ip header after head reallocation (CVE-2026-68476)

    • kernel: selinux: avoid sk_socket dereference in selinux_sctp_bind_connect() (CVE-2026-72242)

    • kernel: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled (CVE-2026-74515)

    • kernel: usb: usbfs: fix use-after-free of usb_device in usbdev_release() (CVE-2026-80824)

    • kernel: smb: client: clear setuid/setgid bit on write with cifsacl/modefromsid/posix extensions (CVE-2026-89638)

    • kernel: vfio/pci: clear vdev->msi_perm after freeing it on init failure (CVE-2026-89777)

    • kernel: md/raid5-ppl: fix use-after-free in ppl_do_flush() (CVE-2026-93262)

    • kernel: KEYS: encrypted: fix integer overflow of datablob_len (CVE-2026-98222)

    • kernel: netfilter: flowtable: hold reference on ct until flow is released (CVE-2026-98320)

    Bug Fix(es) and Enhancement(s):

    • kernel panic at __crypto_xor+0x2 after a number of out-of-bounds read and use-after-free read (JIRA:Rocky Linux SIG Cloud-257205)

    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.

    Source: OSV (Open Source Vulnerabilities)