In the Linux kernel, the following vulnerability has been resolved: f2fs: fix information leak in f2fs_move_inline_dirents() When converting an inline directory to a regular one, f2fs is leaking uninitialized memory to disk because it doesn't initialize the entire directory block. Fix this by zero-initializing the block. This bug was introduced by commit 4ec17d688d74 ("f2fs: avoid unneeded initializing when converting inline dentry"), which didn't consider the security implications of leaking uninitialized memory to disk. This was found by running xfstest generic/435 on a KMSAN-enabled kernel.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013718 advisory.

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

    f2fs: fix information leak in f2fs_move_inline_dirents()

    When converting an inline directory to a regular one, f2fs is leaking     uninitialized memory to disk because it doesn't initialize the entire     directory block.  Fix this by zero-initializing the block.

    This bug was introduced by commit 4ec17d688d74 (f2fs: avoid unneeded     initializing when converting inline dentry), which didn't consider the     security implications of leaking uninitialized memory to disk.

    This was found by running xfstest generic/435 on a KMSAN-enabled kernel.

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-2026-010968 advisory.

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

    f2fs: fix information leak in f2fs_move_inline_dirents()

    When converting an inline directory to a regular one, f2fs is leaking     uninitialized memory to disk because it doesn't initialize the entire     directory block.  Fix this by zero-initializing the block.

    This bug was introduced by commit 4ec17d688d74 (f2fs: avoid unneeded     initializing when converting inline dentry), which didn't consider the     security implications of leaking uninitialized memory to disk.

    This was found by running xfstest generic/435 on a KMSAN-enabled kernel.

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-2026-007386 advisory.

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

    f2fs: fix information leak in f2fs_move_inline_dirents()

    When converting an inline directory to a regular one, f2fs is leaking     uninitialized memory to disk because it doesn't initialize the entire     directory block.  Fix this by zero-initializing the block.

    This bug was introduced by commit 4ec17d688d74 (f2fs: avoid unneeded     initializing when converting inline dentry), which didn't consider the     security implications of leaking uninitialized memory to disk.

    This was found by running xfstest generic/435 on a KMSAN-enabled kernel.

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.

  - f2fs: fix information leak in f2fs_move_inline_dirents() When converting an inline directory to a regular     one, f2fs is leaking uninitialized memory to disk because it doesn't initialize the entire directory     block. Fix this by zero-initializing the block. This bug was introduced by commit 4ec17d688d74 (f2fs:
    avoid unneeded initializing when converting inline dentry), which didn't consider the security     implications of leaking uninitialized memory to disk. This was found by running xfstest generic/435 on a     KMSAN-enabled kernel. (CVE-2023-53796)

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

An update of the linux package has been released.

ID	Name	Product	Family	Type	Severity
309592	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-013718)	Nessus	Unity Linux Local Security Checks	Local	high
309033	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010968)	Nessus	Unity Linux Local Security Checks	Local	high
307310	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007386)	Nessus	Unity Linux Local Security Checks	Local	high
278348	Linux Distros Unpatched Vulnerability : CVE-2023-53796	Nessus	Misc.	Local	high
151965	Photon OS 4.0: Linux PHSA-2021-4.0-0065	Nessus	PhotonOS Local Security Checks	Local	high

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CVE-2023-53796

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Tenable Plugins

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