5.5

CVE-2025-38429

bus: mhi: ep: Update read pointer only after buffer is written

In the Linux kernel, the following vulnerability has been resolved:

bus: mhi: ep: Update read pointer only after buffer is written

Inside mhi_ep_ring_add_element, the read pointer (rd_offset) is updated
before the buffer is written, potentially causing race conditions where
the host sees an updated read pointer before the buffer is actually
written. Updating rd_offset prematurely can lead to the host accessing
an uninitialized or incomplete element, resulting in data corruption.

Invoke the buffer write before updating rd_offset to ensure the element
is fully written before signaling its availability.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.19 < 6.6.95
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.35
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.4
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.39% 0.32
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
416baaa9-dc9f-4396-8d5f-8c081fb06d67 10 3.9 6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE-908 Use of Uninitialized Resource

The product uses or accesses a resource that has not been initialized.

https://git.kernel.org/stable/c/0007ef098dab48f1ba58364c40b4809f1e21b130
Patch
https://git.kernel.org/stable/c/44b9620e82bbec2b9a6ac77f63913636d84f96dc
Patch
https://git.kernel.org/stable/c/6f18d174b73d0ceeaa341f46c0986436b3aefc9a
Patch
https://git.kernel.org/stable/c/f704a80d9fa268e51a6cc5242714502c3c1fa605
Patch