{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-53382",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-53382"
  ],
  "published": "2026-07-19T11:59:46Z",
  "summary": "media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vidtv: fix NULL pointer dereference in vidtv_mux_push_si\n\nsyzbot reported a general protection fault in\nvidtv_psi_ts_psi_write_into [1].\n\nvidtv_mux_get_pid_ctx() can return NULL, but vidtv_mux_push_si() does\nnot check for this before dereferencing the returned pointer to access\nthe continuity counter. This leads to a general protection fault when\naccessing a near-NULL address.\n\nThe root cause is that vidtv_mux_pid_ctx_init() does not check the\nreturn value of vidtv_mux_create_pid_ctx_once() for PMT section PIDs.\nIf the allocation fails, the PID context is never created, but init\nreturns success. The subsequent vidtv_mux_push_si() call then gets\nNULL from vidtv_mux_get_pid_ctx() and crashes.\n\nFix both the root cause (add error check in vidtv_mux_pid_ctx_init\nfor PMT PIDs) and add defensive NULL checks in vidtv_mux_push_si for\nall vidtv_mux_get_pid_ctx() calls.\n\n[1]\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nWorkqueue: events vidtv_mux_tick\nRIP: 0010:vidtv_psi_ts_psi_write_into+0x54a/0xbc0 drivers/media/test-drivers/vidtv/vidtv_psi.c:197\nCall Trace:\n <TASK>\n vidtv_psi_table_header_write_into drivers/media/test-drivers/vidtv/vidtv_psi.c:799 [inline]\n vidtv_psi_pmt_write_into+0x3b2/0xa70 drivers/media/test-drivers/vidtv/vidtv_psi.c:1231\n vidtv_mux_push_si+0x932/0xe80 drivers/media/test-drivers/vidtv/vidtv_mux.c:196\n vidtv_mux_tick+0xe9b/0x1480 drivers/media/test-drivers/vidtv/vidtv_mux.c:408",
  "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": "6.1.177",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-53382"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/455bc12e7b73ab5a2dfcb47822e91e772bc6c42e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f0f5a1d7056980a0d512456fdb370cfb72bba86a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6df7e16d4f742c80add58995a6e69385b97aa9e6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cd923dadefadb9671b5ac341b672ff424d429c39"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/353d9578951dd38bc9679308f5b618ceed1f20fa"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f965cf22dda7f512f4922415894c3e528269a4ae"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b28b12be6e8910489e6800ed93ea4d41dfe19683"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/232e4b313ea342672edf8947e067c0de4328405b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7d8bf3d8f91073f4db347ed3aa6302b56107499c"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}