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: cachestat: fix page cache statistics     permission checking When the 'cachestat()' system call was added in commit cf264e1329fb (cachestat:
    implement cachestat syscall), it was meant to be a much more convenient (and performant) version of     mincore() that didn't need mapping things into the user virtual address space in order to work. But it     ended up missing the check for writability or ownership fix for mincore(), done in commit 134fca9063ad     (mm/mincore.c: make mincore() more conservative). This just adds equivalent logic to 'cachestat()',     modified for the file context (rather than vma). (CVE-2025-21691)

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

The remote Ubuntu 24.04 LTS / 24.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7448-1 advisory.

    It was discovered that the CIFS network file system implementation in the Linux kernel did not properly     verify the target namespace when handling upcalls. An attacker could use this to expose sensitive     information. (CVE-2025-2312)

    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:

    - GPIO subsystem;

    - GPU drivers;

    - IRQ chip drivers;

    - Network drivers;

    - Mellanox network drivers;

    - x86 platform drivers;

    - i.MX PM domains;

    - SCSI subsystem;

    - USB Serial drivers;

    - AFS file system;

    - GFS2 file system;

    - File systems infrastructure;

    - Proc file system;

    - SMB network file system;

    - Timer subsystem;

    - Kernel CPU control infrastructure;

    - Memory management;

    - Networking core;

    - Ethtool driver;

    - IEEE 802.15.4 subsystem;

    - Open vSwitch;

    - Network traffic control;

    - VMware vSockets driver; (CVE-2025-21694, CVE-2025-21993, CVE-2025-21684, CVE-2025-21681, CVE-2025-21675,     CVE-2025-21672, CVE-2025-21696, CVE-2025-21691, CVE-2025-21683, CVE-2025-21666, CVE-2025-21682,     CVE-2025-21697, CVE-2025-21668, CVE-2025-21701, CVE-2025-21670, CVE-2025-21676, CVE-2025-21695,     CVE-2025-21692, CVE-2025-21674, CVE-2025-21699, CVE-2024-57948, CVE-2025-21677, CVE-2024-57951,     CVE-2025-21702, CVE-2025-21700, CVE-2024-57949, CVE-2025-21669, CVE-2025-21703, CVE-2025-21756,     CVE-2025-21667, CVE-2024-57952, CVE-2024-57950, CVE-2025-21685, CVE-2025-21693, CVE-2025-21678,     CVE-2025-21665, CVE-2025-21680, CVE-2025-21689, CVE-2025-21690, CVE-2025-21673)

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 remote Ubuntu 24.04 LTS / 24.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7445-1 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:

    - GPIO subsystem;

    - GPU drivers;

    - IRQ chip drivers;

    - Network drivers;

    - Mellanox network drivers;

    - x86 platform drivers;

    - i.MX PM domains;

    - SCSI subsystem;

    - USB Serial drivers;

    - AFS file system;

    - GFS2 file system;

    - File systems infrastructure;

    - Proc file system;

    - SMB network file system;

    - Timer subsystem;

    - Kernel CPU control infrastructure;

    - Memory management;

    - Networking core;

    - Ethtool driver;

    - IEEE 802.15.4 subsystem;

    - Open vSwitch;

    - Network traffic control;

    - VMware vSockets driver; (CVE-2025-21685, CVE-2025-21684, CVE-2025-21756, CVE-2025-21670, CVE-2024-57949,     CVE-2025-21677, CVE-2025-21680, CVE-2025-21703, CVE-2024-57952, CVE-2025-21674, CVE-2025-21701,     CVE-2025-21691, CVE-2025-21689, CVE-2025-21668, CVE-2025-21665, CVE-2025-21683, CVE-2025-21675,     CVE-2025-21672, CVE-2024-57948, CVE-2025-21669, CVE-2025-21673, CVE-2025-21692, CVE-2025-21699,     CVE-2025-21702, CVE-2025-21682, CVE-2025-21690, CVE-2025-21681, CVE-2025-21695, CVE-2025-21696,     CVE-2025-21700, CVE-2025-21678, CVE-2025-21676, CVE-2024-57950, CVE-2025-21666, CVE-2025-21694,     CVE-2025-21693, CVE-2025-21993, CVE-2024-57951, CVE-2025-21697, CVE-2025-21667)

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.

ID	Name	Product	Family	Published	Updated	Severity
230468	Linux Distros Unpatched Vulnerability : CVE-2025-21691	Nessus	Misc.	3/6/2025	3/6/2025	high
234778	Ubuntu 24.04 LTS / 24.10 : Linux kernel vulnerabilities (USN-7448-1)	Nessus	Ubuntu Local Security Checks	4/23/2025	4/23/2025	high
234757	Ubuntu 24.04 LTS / 24.10 : Linux kernel vulnerabilities (USN-7445-1)	Nessus	Ubuntu Local Security Checks	4/23/2025	4/23/2025	high

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