High 7.1Published Sep 11, 2025

CVE-2025-39760usb: core: config: Prevent OOB read in SS endpoint companion parsing

Updated under an hour ago (Oct 26, 2026, 5:20 PM ET)

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It affects Linux and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Jun 11, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 builds before 5c3097ede7835d3caf6543eb70ff689af4550cd2; 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 builds before 058ad2b722812708fe90567875704ae36563e33b; from 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 before b10e0f868067c6f25bbfabdcf3e1e6432c24ca55; 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 builds before 5badd56c711e2c8371d1670f9bd486697575423c; from 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 before 9512510cee7d1becdb0e9413fdd3ab783e4e30ee; 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 builds before 4fe6f472f0beef4281e6f03bc38a910a33be663f; from 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 before 9843bcb187cb933861f7805022e6873905f669e4; from 842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8 before cf16f408364efd8a68f39011a3b073c83a03612d	CNA record
Siemens SIMATIC CN 4100 siemens:simatic_cn_4100 (from the name)	before V5.0	CISA ADP
linux linux_kernel linux:linux_kernel	from 2.6.35 before 5.10.241; from 5.11 before 5.15.190; from 5.16 before 6.1.149; from 6.2 before 6.6.103; from 6.7 before 6.12.43; from 6.13 before 6.15.11; from 6.16 before 6.16.2	NVD
debian debian_linux debian:debian_linux	11.0	NVD

References

References

https://git.kernel.org/stable/c/5c3097ede7835d3caf6543eb70ff689af4550cd2	patch
https://git.kernel.org/stable/c/058ad2b722812708fe90567875704ae36563e33b	patch
https://git.kernel.org/stable/c/b10e0f868067c6f25bbfabdcf3e1e6432c24ca55	patch
https://git.kernel.org/stable/c/5badd56c711e2c8371d1670f9bd486697575423c	patch
https://git.kernel.org/stable/c/9512510cee7d1becdb0e9413fdd3ab783e4e30ee	patch
https://git.kernel.org/stable/c/4fe6f472f0beef4281e6f03bc38a910a33be663f	patch
https://git.kernel.org/stable/c/9843bcb187cb933861f7805022e6873905f669e4	patch
https://git.kernel.org/stable/c/cf16f408364efd8a68f39011a3b073c83a03612d	patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html	third-party-advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html	third-party-advisory
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.