The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990550 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    f2fs: fix dereference of stale list iterator after loop body

    The list iterator variable will be a bogus pointer if no break was hit.
    Dereferencing it (cur->page in this case) could load an out-of-bounds/undefined     value making it unsafe to use that in the comparision to determine if the     specific element was found.

    Since 'cur->page' *can* be out-ouf-bounds it cannot be guaranteed that     by chance (or intention of an attacker) it matches the value of 'page'     even though the correct element was not found.

    This is fixed by using a separate list iterator variable for the loop     and only setting the original variable if a suitable element was found.
    Then determing if the element was found is simply checking if the     variable is set.

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

Note that Nessus has not tested for this issue 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: f2fs: fix dereference of stale list     iterator after loop body The list iterator variable will be a bogus pointer if no break was hit.
    Dereferencing it (cur->page in this case) could load an out-of-bounds/undefined value making it unsafe to     use that in the comparision to determine if the specific element was found. Since 'cur->page' *can* be     out-ouf-bounds it cannot be guaranteed that by chance (or intention of an attacker) it matches the value     of 'page' even though the correct element was not found. This is fixed by using a separate list iterator     variable for the loop and only setting the original variable if a suitable element was found. Then     determing if the element was found is simply checking if the variable is set. (CVE-2022-49425)

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-991206 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    f2fs: fix dereference of stale list iterator after loop body

    The list iterator variable will be a bogus pointer if no break was hit.
    Dereferencing it (cur->page in this case) could load an out-of-bounds/undefined     value making it unsafe to use that in the comparision to determine if the     specific element was found.

    Since 'cur->page' *can* be out-ouf-bounds it cannot be guaranteed that     by chance (or intention of an attacker) it matches the value of 'page'     even though the correct element was not found.

    This is fixed by using a separate list iterator variable for the loop     and only setting the original variable if a suitable element was found.
    Then determing if the element was found is simply checking if the     variable is set.

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

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989470 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    f2fs: fix dereference of stale list iterator after loop body

    The list iterator variable will be a bogus pointer if no break was hit.
    Dereferencing it (cur->page in this case) could load an out-of-bounds/undefined     value making it unsafe to use that in the comparision to determine if the     specific element was found.

    Since 'cur->page' *can* be out-ouf-bounds it cannot be guaranteed that     by chance (or intention of an attacker) it matches the value of 'page'     even though the correct element was not found.

    This is fixed by using a separate list iterator variable for the loop     and only setting the original variable if a suitable element was found.
    Then determing if the element was found is simply checking if the     variable is set.

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

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

An update of the linux package has been released.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989786 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    f2fs: fix dereference of stale list iterator after loop body

    The list iterator variable will be a bogus pointer if no break was hit.
    Dereferencing it (cur->page in this case) could load an out-of-bounds/undefined     value making it unsafe to use that in the comparision to determine if the     specific element was found.

    Since 'cur->page' *can* be out-ouf-bounds it cannot be guaranteed that     by chance (or intention of an attacker) it matches the value of 'page'     even though the correct element was not found.

    This is fixed by using a separate list iterator variable for the loop     and only setting the original variable if a suitable element was found.
    Then determing if the element was found is simply checking if the     variable is set.

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

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

ID	Name	Product	Family	Published	Updated	Severity
274236	Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990550)	Nessus	Unity Linux Local Security Checks	11/6/2025	11/6/2025	medium
225199	Linux Distros Unpatched Vulnerability : CVE-2022-49425	Nessus	Misc.	3/5/2025	1/15/2026	medium
278272	Unity Linux 20.1050e Security Update: kernel (UTSA-2025-991206)	Nessus	Unity Linux Local Security Checks	12/11/2025	12/11/2025	medium
273265	Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989470)	Nessus	Unity Linux Local Security Checks	11/5/2025	11/5/2025	medium
151965	Photon OS 4.0: Linux PHSA-2021-4.0-0065	Nessus	PhotonOS Local Security Checks	7/22/2021	3/23/2026	high
273550	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989786)	Nessus	Unity Linux Local Security Checks	11/5/2025	11/5/2025	medium

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