{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-38696",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-38696"
  ],
  "published": "2025-09-04T15:33:55Z",
  "summary": "MIPS: Don't crash in stack_top() for tasks without ABI or vDSO",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nMIPS: Don't crash in stack_top() for tasks without ABI or vDSO\n\nNot all tasks have an ABI associated or vDSO mapped,\nfor example kthreads never do.\nIf such a task ever ends up calling stack_top(), it will derefence the\nNULL ABI pointer and crash.\n\nThis can for example happen when using kunit:\n\n    mips_stack_top+0x28/0xc0\n    arch_pick_mmap_layout+0x190/0x220\n    kunit_vm_mmap_init+0xf8/0x138\n    __kunit_add_resource+0x40/0xa8\n    kunit_vm_mmap+0x88/0xd8\n    usercopy_test_init+0xb8/0x240\n    kunit_try_run_case+0x5c/0x1a8\n    kunit_generic_run_threadfn_adapter+0x28/0x50\n    kthread+0x118/0x240\n    ret_from_kernel_thread+0x14/0x1c\n\nOnly dereference the ABI point if it is set.\n\nThe GIC page is also included as it is specific to the vDSO.\nAlso move the randomization adjustment into the same conditional.",
  "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": "6.1.149",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-38696"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ab18e48a503230d675e824a0d68a108bdff42503"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e78033e59444d257d095b73ce5d20625294f6ec2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bd90dbd196831f5c2620736dc221db2634cf1e8e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5b6839b572b503609b9b58bc6c04a816eefa0794"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f22de2027b206ddfb8a075800bb5d0dacf2da4b8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/82d140f6aab5e89a9d3972697a0dbe1498752d9b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/24d098b6f69b0aa806ffcb3e18259bee31650b28"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cddf47d20b0325dc8a4e57b833fe96e8f36c42a4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e9f4a6b3421e936c3ee9d74710243897d74dbaa2"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}