Detections
Analytics
Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000717)
medium Nessus Plugin ID 291039
Synopsis
The Unity Linux host is missing one or more security updates.Description
The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000717 advisory.The CRC32C feature in the Btrfs implementation in the Linux kernel before 3.8-rc1 allows local users to cause a denial of service (prevention of file creation) by leveraging the ability to write to a directory important to the victim, and creating a file with a crafted name that is associated with a specific CRC32C hash value.
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.
Solution
Update the affected kernel package.See Also
http://www.nessus.org/u?318faeed
http://crypto.junod.info/2012/12/13/hash-dos-and-btrfs/
http://www.nessus.org/u?5652820e
http://openwall.com/lists/oss-security/2012/12/13/20
http://www.kernel.org/pub/linux/kernel/v3.x/testing/patch-3.8-rc1.bz2
http://www.ubuntu.com/usn/USN-1944-1
http://www.ubuntu.com/usn/USN-1945-1
http://www.ubuntu.com/usn/USN-1946-1
http://www.ubuntu.com/usn/USN-1947-1
http://www.ubuntu.com/usn/USN-2017-1
Plugin Details
Severity: Medium
ID: 291039
File Name: unity_linux_UTSA-2026-000717.nasl
Version: 1.1
Type: local
Published: 1/16/2026
Updated: 1/16/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 4
Temporal Score: 3.1
Vector: CVSS2#AV:L/AC:H/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2012-5375
CVSS v3
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/UOS-Server/release, Host/UOS-Server/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 1/14/2026
Vulnerability Publication Date: 12/13/2012
Reference Information
CVE: CVE-2012-5375