In the Linux kernel, the following vulnerability has been resolved: netfs: Fix netfs_create_write_req() to handle async cache object creation netfs_create_write_req() will skip caching if the fscache cookie is disabled, but this is a problem because async cache object creation might not have got far enough yet that has been enabled - thereby causing the call to fscache_begin_write_operation() to be skipped. Fix this by removing the checks on the cookie and delegating this to fscache_begin_write_operation().

An update of the linux package has been released.

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 netfs_create_write_req() to
    handle async cache object creation netfs_create_write_req() will skip caching if the fscache cookie is
    disabled, but this is a problem because async cache object creation might not have got far enough yet that
    has been enabled - thereby causing the call to fscache_begin_write_operation() to be skipped. Fix this by
    removing the checks on the cookie and delegating this to fscache_begin_write_operation(). (CVE-2026-72366)

The remote Ubuntu 24.04 LTS / 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8816-1 advisory.

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - ARM64 architecture;

    - S390 architecture;

    - x86 architecture;

    - DRBD Distributed Replicated Block Device drivers;

    - InfiniBand drivers;

    - IOMMU subsystem;

    - Multiple devices driver;

    - Network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - NVME drivers;

    - TCM subsystem;

    - Virtio Host (VHOST) subsystem;

    - Xen hypervisor drivers;

    - AFS file system;

    - File systems infrastructure;

    - Network file systems library;

    - Network file system (NFS) client;

    - NTFS3 file system;

    - OCFS2 file system;

    - OrangeFS file system;

    - SMB network file system;

    - IPv4 networking;

    - Sun RPC protocol;

    - IPv6 networking;

    - IP tunnels definitions;

    - Netfilter;

    - TCP network protocol;

    - Locking primitives;

    - 9P file system network protocol;

    - B.A.T.M.A.N. meshing protocol;

    - Networking core;

    - IFE protocol;

    - RxRPC session sockets;

    - Network traffic control;

    - SCTP protocol;

    - SMC sockets;

    - TIPC protocol;

    - XFRM subsystem; (CVE-2026-64530, CVE-2026-64534, CVE-2026-64535, CVE-2026-64541, CVE-2026-64551,     CVE-2026-68083, CVE-2026-68457, CVE-2026-68476, CVE-2026-68477, CVE-2026-72014, CVE-2026-72020,     CVE-2026-72033, CVE-2026-72041, CVE-2026-72046, CVE-2026-72064, CVE-2026-72065, CVE-2026-72069,     CVE-2026-72083, CVE-2026-72084, CVE-2026-72085, CVE-2026-72098, CVE-2026-72129, CVE-2026-72130,     CVE-2026-72137, CVE-2026-72139, CVE-2026-72191, CVE-2026-72192, CVE-2026-72194, CVE-2026-72217,     CVE-2026-72220, CVE-2026-72221, CVE-2026-72222, CVE-2026-72226, CVE-2026-72234, CVE-2026-72248,     CVE-2026-72249, CVE-2026-72251, CVE-2026-72277, CVE-2026-72278, CVE-2026-72279, CVE-2026-72287,     CVE-2026-72288, CVE-2026-72289, CVE-2026-72296, CVE-2026-72299, CVE-2026-72317, CVE-2026-72318,     CVE-2026-72319, CVE-2026-72320, CVE-2026-72322, CVE-2026-72323, CVE-2026-72329, CVE-2026-72339,     CVE-2026-72348, CVE-2026-72351, CVE-2026-72355, CVE-2026-72366, CVE-2026-72381, CVE-2026-72393,     CVE-2026-72398, CVE-2026-72399, CVE-2026-72412, CVE-2026-72417, CVE-2026-72422, CVE-2026-72429,     CVE-2026-72436, CVE-2026-72442, CVE-2026-72451, CVE-2026-72463, CVE-2026-72466, CVE-2026-72472,     CVE-2026-72473, CVE-2026-72477, CVE-2026-72491, CVE-2026-72493, CVE-2026-72494, CVE-2026-72495,     CVE-2026-72496, CVE-2026-72501, CVE-2026-74255, CVE-2026-74267, CVE-2026-74268, CVE-2026-74269,     CVE-2026-74287, CVE-2026-74310, CVE-2026-74345, CVE-2026-74350, CVE-2026-74361, CVE-2026-74376,     CVE-2026-74384, CVE-2026-74394, CVE-2026-74398, CVE-2026-74401, CVE-2026-74406, CVE-2026-74427,     CVE-2026-74428, CVE-2026-74433, CVE-2026-74434, CVE-2026-74436, CVE-2026-74439, CVE-2026-80665)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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

  - In the Linux kernel, the following vulnerability has been resolved: netfs: Fix netfs_create_write_req() to     handle async cache object creation netfs_create_write_req() will skip caching if the fscache cookie is     disabled, but this is a problem because async cache object creation might not have got far enough yet that     has been enabled - thereby causing the call to fscache_begin_write_operation() to be skipped. Fix this by     removing the checks on the cookie and delegating this to fscache_begin_write_operation(). (CVE-2026-72366)

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

ID	Name	Product	Family	Type	Severity
377900	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-3402)	Nessus	Amazon Linux Local Security Checks	Local	high
377578	Ubuntu 24.04 LTS / 26.04 LTS : Linux kernel (NVIDIA) vulnerabilities (USN-9003-1)	Nessus	Ubuntu Local Security Checks	Local	medium
375139	Photon OS 5.0: Linux PHSA-2026-5.0-92-0991	Nessus	PhotonOS Local Security Checks	Local	critical
374973	Photon OS 5.0: Linux PHSA-2026-5.0-91-0991	Nessus	PhotonOS Local Security Checks	Local	critical
365768	Ubuntu 26.04 LTS : Linux kernel (Azure) vulnerabilities (USN-8888-1)	Nessus	Ubuntu Local Security Checks	Local	medium
470812	Google: sys-kernel/cchost-kernel-6_12, sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.21	Tenable Cloud Security	Google COS Security Checks	Local	critical
470812	Google: sys-kernel/cchost-kernel-6_12, sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.21	Tenable Self-Hosted Container Security	Google COS Security Checks	Local	critical
350177	Ubuntu 24.04 LTS / 26.04 LTS : Linux kernel vulnerabilities (USN-8816-1)	Nessus	Ubuntu Local Security Checks	Local	critical
350138	openSUSE 16: cluster-md-kmp-64kb / cluster-md-kmp-azure / cluster-md-kmp-default / etc (openSUSE-SU-2026:21910-1)	Nessus	SuSE 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
335531	Linux Distros Unpatched Vulnerability : CVE-2026-72366	Nessus	Misc.	Local	critical

Detections

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CVE-2026-72366

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