FKIE_CVE-2025-37796

Vulnerability from fkie_nvd - Published: 2025-05-01 14:15 - Updated: 2025-11-03 20:18
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: at76c50x: fix use after free access in at76_disconnect The memory pointed to by priv is freed at the end of at76_delete_device function (using ieee80211_free_hw). But the code then accesses the udev field of the freed object to put the USB device. This may also lead to a memory leak of the usb device. Fix this by using udev from interface.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/152721cbae42713ecfbca6847e0f102ee6b19546Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27c7e63b3cb1a20bb78ed4a36c561ea4579fd7daPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c619aec1f538333b56746d2f796aab1bca5c9a5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5e7df74745700f059dc117a620e566964a2e8f2cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e4ab3e574c2a335b40fa1f70d1c54fcb58ab33fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7ca513631fa6ad3011b8b9197cdde0f351103704Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9682bfef2cf3802515a902e964d774e137be1b9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c731cdfddcf1be1590d5ba8c9b508f98e3a2b3d6Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 3.17
linux linux_kernel 3.17
linux linux_kernel 3.17
linux linux_kernel 3.17
linux linux_kernel 6.15
linux linux_kernel 6.15
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: at76c50x: fix use after free access in at76_disconnect\n\nThe memory pointed to by priv is freed at the end of at76_delete_device\nfunction (using ieee80211_free_hw). But the code then accesses the udev\nfield of the freed object to put the USB device. This may also lead to a\nmemory leak of the usb device. Fix this by using udev from interface."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: at76c50x: se corrige el use after free en at76_disconnect. La memoria a la que apunta priv se libera al final de la funci\u00f3n at76_delete_device (mediante ieee80211_free_hw). Sin embargo, el c\u00f3digo accede al campo udev del objeto liberado para colocar el dispositivo USB. Esto tambi\u00e9n puede provocar una fuga de memoria del dispositivo USB. Se soluciona usando udev desde la interfaz."
    }
  ],
  "id": "CVE-2025-37796",
  "lastModified": "2025-11-03T20:18:35.430",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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  "published": "2025-05-01T14:15:44.173",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-416"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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  • 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.
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Detection rules are retrieved from Rulezet.