In the Linux kernel, the following vulnerability has been resolved: netfs: Fix missing locking around retry adding new subreqs Fix netfs_retry_read_subrequests() and netfs_retry_write_stream() to take the appropriate lock when adding extra subrequests into stream->subrequests.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - In the Linux kernel, the following vulnerability has been resolved: netfs: Fix missing locking around
    retry adding new subreqs Fix netfs_retry_read_subrequests() and netfs_retry_write_stream() to take the
    appropriate lock when adding extra subrequests into stream->subrequests. (CVE-2026-64068)

An update of the linux package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - netfs: Fix missing locking around retry adding new subreqs Fix netfs_retry_read_subrequests() and     netfs_retry_write_stream() to take the appropriate lock when adding extra subrequests into     stream->subrequests. (CVE-2026-64068)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
472553	Chainguard: linux-qemu-melange: security update to 6.18.49-r2	Tenable Cloud Security	Chainguard Local Security Checks	Local	critical
472553	Chainguard: linux-qemu-melange: security update to 6.18.49-r2	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	critical
343532	Ubuntu 24.04 LTS / Pro Realtime 24.04 LTS : Linux kernel (GCP) vulnerabilities (USN-8728-1)	Nessus	Ubuntu Local Security Checks	Local	high
341880	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-2071)	Nessus	Amazon Linux Local Security Checks	Local	high
340681	Ubuntu 24.04 LTS / 26.04 LTS : Linux kernel (NVIDIA) vulnerabilities (USN-8663-1)	Nessus	Ubuntu Local Security Checks	Local	high
340045	Ubuntu 26.04 LTS : Linux kernel (NVIDIA BaseOS) vulnerabilities (USN-8664-1)	Nessus	Ubuntu Local Security Checks	Local	high
339767	Photon OS 5.0: Linux PHSA-2026-5.0-92-0973	Nessus	PhotonOS Local Security Checks	Local	critical
339766	Photon OS 5.0: Linux PHSA-2026-5.0-91-0973	Nessus	PhotonOS Local Security Checks	Local	critical
327927	Linux Distros Unpatched Vulnerability : CVE-2026-64068	Nessus	Misc.	Local	critical

Detections

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CVE-2026-64068

critical

Tenable Plugins

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critical

high

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critical

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