CVE-2025-39760: debian linux Out-of-bounds Read — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: usb: core: config: Prevent OOB read in SS endpoint companion parsing usb_parse_ss_endpoint_companion() checks descriptor type before length, enabling a potentially odd read outside of the buffer size. Fix this up by checking the size first before looking at any of the fields in the descriptor.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
linux	linux_kernel	2.6.35 — 5.10.241
linux	linux_kernel	5.11 — 5.15.190
linux	linux_kernel	5.16 — 6.1.149
linux	linux_kernel	6.2 — 6.6.103
linux	linux_kernel	6.7 — 6.12.43
linux	linux_kernel	6.13 — 6.15.11
linux	linux_kernel	6.16 — 6.16.2
debian	debian_linux	All

References

Advisories & Patches

https://git.kernel.org/stable/c/058ad2b722812708fe90567875704ae36563e33b https://git.kernel.org/stable/c/4fe6f472f0beef4281e6f03bc38a910a33be663f https://git.kernel.org/stable/c/5badd56c711e2c8371d1670f9bd486697575423c https://git.kernel.org/stable/c/5c3097ede7835d3caf6543eb70ff689af4550cd2 https://git.kernel.org/stable/c/9512510cee7d1becdb0e9413fdd3ab783e4e30ee https://git.kernel.org/stable/c/9843bcb187cb933861f7805022e6873905f669e4 https://git.kernel.org/stable/c/b10e0f868067c6f25bbfabdcf3e1e6432c24ca55 https://git.kernel.org/stable/c/cf16f408364efd8a68f39011a3b073c83a03612d

Other References

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html https://cert-portal.siemens.com/productcert/html/ssa-032379.html

Frequently Asked Questions

What is CVE-2025-39760? +

In the Linux kernel, the following vulnerability has been resolved: usb: core: config: Prevent OOB read in SS endpoint companion parsing usb_parse_ss_endpoint_companion() checks descriptor type before length, enabling a potentially odd read outside of the buffer size. Fix this up by checking the size first before looking at any of the fields in the descriptor. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-39760? +

CVE-2025-39760 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-39760? +

CVE-2025-39760 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-39760? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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