usb: core: config: Prevent OOB read in SS endpoint companion parsing
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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- 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
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39760.json
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-39760