CVE-2025-38135

serial: Fix potential null-ptr-deref in mlb_usio_probe()

MEDIUM
5.5
CVSS Score
Published: July 3, 2025 at 08:35 AM UTC
Updated: June 17, 2026 at 09:16 AM UTC
2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.11 ≤ v < 5.15.1865.16 ≤ v < 6.1.1425.2 ≤ v < 5.10.2395.2 ≤ v < 5.15.1865.2 ≤ v < 5.4.2955.2 ≤ v < 6.1.1425.2 ≤ v < 6.12.345.2 ≤ v < 6.15.35.2 ≤ v < 6.165.2 ≤ v < 6.6.945.5 ≤ v < 5.10.2396.13 ≤ v < 6.15.36.2 ≤ v < 6.6.946.7 ≤ v < 6.12.345.2ba44dc04300441b47618f9933bf36e75a280e5fe
Vendor states this is fixed in 19fd9f5a69363d33079097d866eb6082d61bf31d (fixed)
Vendor states this is fixed in 548b0e81b9a0902a8bc8259430ed965663baadfc (fixed)
Vendor states this is fixed in 81159a6b064142b993f2f39828b77e199c77872a (fixed)
Vendor states this is fixed in 86bcae88c9209e334b2f8c252f4cc66beb261886 (fixed)
Vendor states this is fixed in a05ebe384c7ca75476453f3070c67d9cf1d1a89f (fixed)
Vendor states this is fixed in a6c7c365734cd0fa1c5aa225a6294fdf80cad2ea (fixed)
Vendor states this is fixed in c23d87b43f7dba5eb12820f6cf21a1cd4f63eb3d (fixed)
Vendor states this is fixed in e1b144aebe6fb898d96ced8c990d7aa38fda4a7a (fixed)
Vendor states this is fixed in 5.10.239 (unaffected)
Vendor states this is fixed in 5.15.186 (unaffected)
Vendor states this is fixed in 5.2 (unaffected)
Vendor states this is fixed in 5.4.295 (unaffected)
Vendor states this is fixed in 6.1.142 (unaffected)
Vendor states this is fixed in 6.12.34 (unaffected)
Vendor states this is fixed in 6.15.3 (unaffected)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.6.94 (unaffected)

References (10)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/19fd9f5a69363d33079097d866eb6082d61bf31d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/548b0e81b9a0902a8bc8259430ed965663baadfc
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/81159a6b064142b993f2f39828b77e199c77872a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/86bcae88c9209e334b2f8c252f4cc66beb261886
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a05ebe384c7ca75476453f3070c67d9cf1d1a89f
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a6c7c365734cd0fa1c5aa225a6294fdf80cad2ea
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c23d87b43f7dba5eb12820f6cf21a1cd4f63eb3d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e1b144aebe6fb898d96ced8c990d7aa38fda4a7a

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476

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