{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-71274",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-71274"
  ],
  "published": "2026-05-06T11:29:17Z",
  "summary": "rpmsg: core: fix race in driver_override_show() and use core helper",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrpmsg: core: fix race in driver_override_show() and use core helper\n\nThe driver_override_show function reads the driver_override string\nwithout holding the device_lock. However, the store function modifies\nand frees the string while holding the device_lock. This creates a race\ncondition where the string can be freed by the store function while\nbeing read by the show function, leading to a use-after-free.\n\nTo fix this, replace the rpmsg_string_attr macro with explicit show and\nstore functions. The new driver_override_store uses the standard\ndriver_set_override helper. Since the introduction of\ndriver_set_override, the comments in include/linux/rpmsg.h have stated\nthat this helper must be used to set or clear driver_override, but the\nimplementation was not updated until now.\n\nBecause driver_set_override modifies and frees the string while holding\nthe device_lock, the new driver_override_show now correctly holds the\ndevice_lock during the read operation to prevent the race.\n\nAdditionally, since rpmsg_string_attr has only ever been used for\ndriver_override, removing the macro simplifies the code.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.165",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-71274"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/392c6b68334aa0e0ae9aba95c0a366bcb0d92f5d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d66b8074c555e8abb0ae19eea1c9f3635498bdde"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/47615557447185917afa432b7958f87583c417cb"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/90c8353f471821d7ccd4fe573a2402e056192494"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7654e6e3cd6bdee9602f6063b3c670bd556d7e61"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2e4a70f3c30910427e5ea848b799066d67b963d5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/954557957177c3c13d7c655976665b1170da5e50"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/42023d4b6d2661a40ee2dcf7e1a3528a35c638ca"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T12:19:11Z"
  }
}