Detections
Analytics
Unity Linux 20.1050e / 20.1060e / 20.1070-8ae / 20.1070e Security Update: kernel (UTSA-2026-073375)
medium Nessus Plugin ID 343330
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-2026-073375 advisory.In the Linux kernel, the following vulnerability has been resolved:
USB: serial: belkin_sa: validate interrupt status length
The Belkin interrupt callback treats interrupt data as a four-byte status report and reads LSR/MSR fields at offsets 2 and 3. The interrupt-in buffer length is derived from endpoint wMaxPacketSize, and short interrupt transfers may complete successfully with a smaller actual_length.
Check the completed interrupt packet length before parsing status fields so short interrupt endpoints and short successful packets are ignored instead of causing out-of-bounds or stale status-byte reads.
KASAN report as below:
BUG: KASAN: slab-out-of-bounds in belkin_sa_read_int_callback() Read of size 1 Call trace:
belkin_sa_read_int_callback() (drivers/usb/serial/belkin_sa.c:202)
__usb_hcd_giveback_urb() (drivers/usb/core/hcd.c:1630) dummy_timer() (?:?)
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
https://atomgit.com/src-openeuler/kernel/issues/16231
https://nvd.nist.gov/vuln/detail/CVE-2026-63903
Plugin Details
Severity: Medium
ID: 343330
File Name: unity_linux_UTSA-2026-073375.nasl
Version: 1.1
Type: Local
Published: 9/6/2026
Updated: 9/6/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.2
Percentile: 96.43
CVSS v2
Risk Factor: Medium
Base Score: 5.6
Temporal Score: 4.1
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C
CVSS Score Source: CVE-2026-63903
CVSS v3
Risk Factor: Medium
Base Score: 5.2
Temporal Score: 4.5
Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 7/31/2026
Vulnerability Publication Date: 6/25/2026
Reference Information
CVE: CVE-2026-63903