In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix reference count leak in smb_check_perm_dacl() The issue happens in a specific path in smb_check_perm_dacl(). When "id" and "uid" have the same value, the function simply jumps out of the loop without decrementing the reference count of the object "posix_acls", which is increased by get_acl() earlier. This may result in memory leaks. Fix it by decreasing the reference count of "posix_acls" before jumping to label "check_access_bits".

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013488 advisory.

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

    ksmbd: fix reference count leak in smb_check_perm_dacl()

    The issue happens in a specific path in smb_check_perm_dacl(). When     id and uid have the same value, the function simply jumps out of     the loop without decrementing the reference count of the object     posix_acls, which is increased by get_acl() earlier. This may     result in memory leaks.

    Fix it by decreasing the reference count of posix_acls before     jumping to label check_access_bits.

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-2026-011320 advisory.

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

    ksmbd: fix reference count leak in smb_check_perm_dacl()

    The issue happens in a specific path in smb_check_perm_dacl(). When     id and uid have the same value, the function simply jumps out of     the loop without decrementing the reference count of the object     posix_acls, which is increased by get_acl() earlier. This may     result in memory leaks.

    Fix it by decreasing the reference count of posix_acls before     jumping to label check_access_bits.

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: ksmbd: fix reference count leak in     smb_check_perm_dacl() The issue happens in a specific path in smb_check_perm_dacl(). When id and uid     have the same value, the function simply jumps out of the loop without decrementing the reference count of     the object posix_acls, which is increased by get_acl() earlier. This may result in memory leaks. Fix it     by decreasing the reference count of posix_acls before jumping to label check_access_bits.
    (CVE-2022-49366)

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

ID	Name	Product	Family	Severity
309229	Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013488)	Nessus	Unity Linux Local Security Checks	medium
308600	Unity Linux 20.1070e Security Update: kernel (UTSA-2026-011320)	Nessus	Unity Linux Local Security Checks	medium
225443	Linux Distros Unpatched Vulnerability : CVE-2022-49366	Nessus	Misc.	medium

Detections

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CVE-2022-49366

medium

Tenable Plugins

medium

medium

medium