CVE-2025-37813
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.
https://nvd.nist.gov/vuln/detail/CVE-2025-37813
Categories
No category defined
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CPE
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REMEDIATION
EXPLOITS
Exploit-db.com
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POC Github
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Other Nist (github, ...)
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CAPEC
Common Attack Pattern Enumerations and Classifications
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