CVE-2022-50359 (GCVE-0-2022-50359)
Vulnerability from cvelistv5
Published
2025-09-17 14:56
Modified
2025-09-17 14:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: media: cx88: Fix a null-ptr-deref bug in buffer_prepare() When the driver calls cx88_risc_buffer() to prepare the buffer, the function call may fail, resulting in a empty buffer and null-ptr-deref later in buffer_queue(). The following log can reveal it: [ 41.822762] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI [ 41.824488] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 41.828027] RIP: 0010:buffer_queue+0xc2/0x500 [ 41.836311] Call Trace: [ 41.836945] __enqueue_in_driver+0x141/0x360 [ 41.837262] vb2_start_streaming+0x62/0x4a0 [ 41.838216] vb2_core_streamon+0x1da/0x2c0 [ 41.838516] __vb2_init_fileio+0x981/0xbc0 [ 41.839141] __vb2_perform_fileio+0xbf9/0x1120 [ 41.840072] vb2_fop_read+0x20e/0x400 [ 41.840346] v4l2_read+0x215/0x290 [ 41.840603] vfs_read+0x162/0x4c0 Fix this by checking the return value of cx88_risc_buffer() [hverkuil: fix coding style issues]
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/cx88/cx88-vbi.c",
            "drivers/media/pci/cx88/cx88-video.c"
          ],
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/cx88/cx88-vbi.c",
            "drivers/media/pci/cx88/cx88-video.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cx88: Fix a null-ptr-deref bug in buffer_prepare()\n\nWhen the driver calls cx88_risc_buffer() to prepare the buffer, the\nfunction call may fail, resulting in a empty buffer and null-ptr-deref\nlater in buffer_queue().\n\nThe following log can reveal it:\n\n[   41.822762] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI\n[   41.824488] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n[   41.828027] RIP: 0010:buffer_queue+0xc2/0x500\n[   41.836311] Call Trace:\n[   41.836945]  __enqueue_in_driver+0x141/0x360\n[   41.837262]  vb2_start_streaming+0x62/0x4a0\n[   41.838216]  vb2_core_streamon+0x1da/0x2c0\n[   41.838516]  __vb2_init_fileio+0x981/0xbc0\n[   41.839141]  __vb2_perform_fileio+0xbf9/0x1120\n[   41.840072]  vb2_fop_read+0x20e/0x400\n[   41.840346]  v4l2_read+0x215/0x290\n[   41.840603]  vfs_read+0x162/0x4c0\n\nFix this by checking the return value of cx88_risc_buffer()\n\n[hverkuil: fix coding style issues]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-17T14:56:11.482Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1"
        },
        {
          "url": "https://git.kernel.org/stable/c/10c99d1c46ea9cd940029e17bab11d021f315c21"
        },
        {
          "url": "https://git.kernel.org/stable/c/4befc7ffa18ef9a4b70d854465313a345a06862f"
        },
        {
          "url": "https://git.kernel.org/stable/c/9181af2dbf06e7f432e5dbe88d10b22343e851b9"
        },
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          "url": "https://git.kernel.org/stable/c/c2257c8a501537afab276c306cb717b7260276e1"
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        {
          "url": "https://git.kernel.org/stable/c/6f21976095c1e92454ab030976f95f40d652351b"
        },
        {
          "url": "https://git.kernel.org/stable/c/704838040f3bdb4aa07ff4f26505a666a3defcfe"
        },
        {
          "url": "https://git.kernel.org/stable/c/644d5a87ab1863eb606526ea743021752a17e9cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b064d91440b33fba5b452f2d1b31f13ae911d71"
        }
      ],
      "title": "media: cx88: Fix a null-ptr-deref bug in buffer_prepare()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50359",
    "datePublished": "2025-09-17T14:56:11.482Z",
    "dateReserved": "2025-09-17T14:53:06.994Z",
    "dateUpdated": "2025-09-17T14:56:11.482Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50359\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-17T15:15:34.633\",\"lastModified\":\"2025-09-18T13:43:34.310\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: cx88: Fix a null-ptr-deref bug in buffer_prepare()\\n\\nWhen the driver calls cx88_risc_buffer() to prepare the buffer, the\\nfunction call may fail, resulting in a empty buffer and null-ptr-deref\\nlater in buffer_queue().\\n\\nThe following log can reveal it:\\n\\n[   41.822762] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI\\n[   41.824488] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\\n[   41.828027] RIP: 0010:buffer_queue+0xc2/0x500\\n[   41.836311] Call Trace:\\n[   41.836945]  __enqueue_in_driver+0x141/0x360\\n[   41.837262]  vb2_start_streaming+0x62/0x4a0\\n[   41.838216]  vb2_core_streamon+0x1da/0x2c0\\n[   41.838516]  __vb2_init_fileio+0x981/0xbc0\\n[   41.839141]  __vb2_perform_fileio+0xbf9/0x1120\\n[   41.840072]  vb2_fop_read+0x20e/0x400\\n[   41.840346]  v4l2_read+0x215/0x290\\n[   41.840603]  vfs_read+0x162/0x4c0\\n\\nFix this by checking the return value of cx88_risc_buffer()\\n\\n[hverkuil: fix coding style issues]\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/10c99d1c46ea9cd940029e17bab11d021f315c21\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2b064d91440b33fba5b452f2d1b31f13ae911d71\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4befc7ffa18ef9a4b70d854465313a345a06862f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/644d5a87ab1863eb606526ea743021752a17e9cb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6f21976095c1e92454ab030976f95f40d652351b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/704838040f3bdb4aa07ff4f26505a666a3defcfe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9181af2dbf06e7f432e5dbe88d10b22343e851b9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c2257c8a501537afab276c306cb717b7260276e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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