CVE-2025-39937 (GCVE-0-2025-39937)

Vulnerability from cvelistv5 – Published: 2025-10-04 07:31 – Updated: 2026-05-11 21:39
VLAI
Title
net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer
Summary
In the Linux kernel, the following vulnerability has been resolved: net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer Since commit 7d5e9737efda ("net: rfkill: gpio: get the name and type from device property") rfkill_find_type() gets called with the possibly uninitialized "const char *type_name;" local variable. On x86 systems when rfkill-gpio binds to a "BCM4752" or "LNV4752" acpi_device, the rfkill->type is set based on the ACPI acpi_device_id: rfkill->type = (unsigned)id->driver_data; and there is no "type" property so device_property_read_string() will fail and leave type_name uninitialized, leading to a potential crash. rfkill_find_type() does accept a NULL pointer, fix the potential crash by initializing type_name to NULL. Note likely sofar this has not been caught because: 1. Not many x86 machines actually have a "BCM4752"/"LNV4752" acpi_device 2. The stack happened to contain NULL where type_name is stored
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7d5e9737efda16535e5b54bd627ef4881d11d31f , < 184f608a68f96794e8fe58cd5535014d53622cde (git)
Affected: 7d5e9737efda16535e5b54bd627ef4881d11d31f , < 8793e7a8e1b60131a825457174ed6398111daeb7 (git)
Affected: 7d5e9737efda16535e5b54bd627ef4881d11d31f , < ada2282259243387e6b6e89239aeb4897e62f051 (git)
Affected: 7d5e9737efda16535e5b54bd627ef4881d11d31f , < 47ade5f9d70b23a119ec20b1c6504864b2543a79 (git)
Affected: 7d5e9737efda16535e5b54bd627ef4881d11d31f , < 689aee35ce671aab752f159e5c8e66d7685e6887 (git)
Affected: 7d5e9737efda16535e5b54bd627ef4881d11d31f , < 21ba85d9d508422ca9e6698463ff9357c928c22d (git)
Affected: 7d5e9737efda16535e5b54bd627ef4881d11d31f , < 21a39b958b4bcf44f7674bfbbe1bbb8cad0d842d (git)
Affected: 7d5e9737efda16535e5b54bd627ef4881d11d31f , < b6f56a44e4c1014b08859dcf04ed246500e310e5 (git)
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Linux Linux Affected: 4.6
Unaffected: 0 , < 4.6 (semver)
Unaffected: 5.4.300 , ≤ 5.4.* (semver)
Unaffected: 5.10.245 , ≤ 5.10.* (semver)
Unaffected: 5.15.194 , ≤ 5.15.* (semver)
Unaffected: 6.1.154 , ≤ 6.1.* (semver)
Unaffected: 6.6.108 , ≤ 6.6.* (semver)
Unaffected: 6.12.49 , ≤ 6.12.* (semver)
Unaffected: 6.16.9 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.