CVE - CVE-2025-37813

CVE-ID
CVE-2025-37813	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: usb: xhci: Fix invalid pointer dereference in Etron workaround This check is performed before prepare_transfer() and prepare_ring(), so enqueue can already point at the final link TRB of a segment. And indeed it will, some 0.4% of times this code is called. Then enqueue + 1 is an invalid pointer. It will crash the kernel right away or load some junk which may look like a link TRB and cause the real link TRB to be replaced with a NOOP. This wouldn't end well. Use a functionally equivalent test which doesn't dereference the pointer and always gives correct result. Something has crashed my machine twice in recent days while playing with an Etron HC, and a control transfer stress test ran for confirmation has just crashed it again. The same test passes with this patch applied.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0624e29c595b05e7a0e6d1c368f0a05799928e30 URL:https://git.kernel.org/stable/c/0624e29c595b05e7a0e6d1c368f0a05799928e30 MISC:https://git.kernel.org/stable/c/142273a49f2c315eabdbdf5a71c15e479b75ca91 URL:https://git.kernel.org/stable/c/142273a49f2c315eabdbdf5a71c15e479b75ca91 MISC:https://git.kernel.org/stable/c/1ea050da5562af9b930d17cbbe9632d30f5df43a URL:https://git.kernel.org/stable/c/1ea050da5562af9b930d17cbbe9632d30f5df43a MISC:https://git.kernel.org/stable/c/bce3055b08e303e28a8751f6073066f5c33a0744 URL:https://git.kernel.org/stable/c/bce3055b08e303e28a8751f6073066f5c33a0744
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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