CVE-2025-38135

low-risk
Published 2025-07-03

In the Linux kernel, the following vulnerability has been resolved: serial: Fix potential null-ptr-deref in mlb_usio_probe() devm_ioremap() can return NULL on error. Currently, mlb_usio_probe() does not check for this case, which could result in a NULL pointer dereference. Add NULL check after devm_ioremap() to prevent this issue.

Do I need to act?

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0.04% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (2)

Affected Vendors

Debian Linux

References (10)

Patch https://git.kernel.org/stable/c/19fd9f5a69363d33079097d866eb6082d61bf31d
Patch https://git.kernel.org/stable/c/548b0e81b9a0902a8bc8259430ed965663baadfc
Patch https://git.kernel.org/stable/c/81159a6b064142b993f2f39828b77e199c77872a
Patch https://git.kernel.org/stable/c/86bcae88c9209e334b2f8c252f4cc66beb261886
Patch https://git.kernel.org/stable/c/a05ebe384c7ca75476453f3070c67d9cf1d1a89f
Patch https://git.kernel.org/stable/c/a6c7c365734cd0fa1c5aa225a6294fdf80cad2ea
Patch https://git.kernel.org/stable/c/c23d87b43f7dba5eb12820f6cf21a1cd4f63eb3d
Patch https://git.kernel.org/stable/c/e1b144aebe6fb898d96ced8c990d7aa38fda4a7a
Third Party Advisory https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
Third Party Advisory https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
25
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 7/34 · Low