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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.18% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/058ad2b722812708fe90567875704ae36563e33bPatch
- https://git.kernel.org/stable/c/4fe6f472f0beef4281e6f03bc38a910a33be663fPatch
- https://git.kernel.org/stable/c/5badd56c711e2c8371d1670f9bd486697575423cPatch
- https://git.kernel.org/stable/c/5c3097ede7835d3caf6543eb70ff689af4550cd2Patch
- https://git.kernel.org/stable/c/9512510cee7d1becdb0e9413fdd3ab783e4e30eePatch
- https://git.kernel.org/stable/c/9843bcb187cb933861f7805022e6873905f669e4Patch
- https://git.kernel.org/stable/c/b10e0f868067c6f25bbfabdcf3e1e6432c24ca55Patch
- https://git.kernel.org/stable/c/cf16f408364efd8a68f39011a3b073c83a03612dPatch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.