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.
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/058ad2b722812708fe90567875704ae36563e33b Patch
- git.kernel.org/stable/c/4fe6f472f0beef4281e6f03bc38a910a33be663f Patch
- git.kernel.org/stable/c/5badd56c711e2c8371d1670f9bd486697575423c Patch
- git.kernel.org/stable/c/5c3097ede7835d3caf6543eb70ff689af4550cd2 Patch
- git.kernel.org/stable/c/9512510cee7d1becdb0e9413fdd3ab783e4e30ee Patch
- git.kernel.org/stable/c/9843bcb187cb933861f7805022e6873905f669e4 Patch
- git.kernel.org/stable/c/b10e0f868067c6f25bbfabdcf3e1e6432c24ca55 Patch
- git.kernel.org/stable/c/cf16f408364efd8a68f39011a3b073c83a03612d Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html Third Party Advisory
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html Third Party Advisory
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 0% percentile: 8 · as of 8 November 2026
- CWE
- CWE-125
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.