CVE-2026-74320 (GCVE-0-2026-74320)
Vulnerability from cvelistv5
Published
2026-08-15 05:58
Modified
2026-08-17 05:17
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fbdev: sm501fb: Fix buffer errors in OF binding code The code that gets the frame buffer mode from OF has 'use after free', 'buffer overrun' and memory leaks. info->edid_data isn't free if the probe functions fail or if pd->def_mode is set. If both the CRT and PANEL are enabled info->edid_data is used after being freed and is freed twice. The string returned by of_get_property(np, "mode", &len) is just written over either the static "640x480-16@60" or the module parameter string without any regard for the length (which is most likely longer). Use kstrump() for the OF mode and free everything before freeing 'info.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4295f9bf74a885da390abc49a3b42a011c1bb890
Version: 4295f9bf74a885da390abc49a3b42a011c1bb890
Version: 4295f9bf74a885da390abc49a3b42a011c1bb890
Version: 4295f9bf74a885da390abc49a3b42a011c1bb890
Version: 4295f9bf74a885da390abc49a3b42a011c1bb890
Version: 4295f9bf74a885da390abc49a3b42a011c1bb890
Version: 4295f9bf74a885da390abc49a3b42a011c1bb890
Version: 4295f9bf74a885da390abc49a3b42a011c1bb890
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{
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          "programFiles": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: sm501fb: Fix buffer errors in OF binding code\n\nThe code that gets the frame buffer mode from OF has \u0027use after free\u0027,\n\u0027buffer overrun\u0027 and memory leaks.\n\ninfo-\u003eedid_data isn\u0027t free if the probe functions fail or if\npd-\u003edef_mode is set.\n\nIf both the CRT and PANEL are enabled info-\u003eedid_data is used after\nbeing freed and is freed twice.\n\nThe string returned by of_get_property(np, \"mode\", \u0026len) is just\nwritten over either the static \"640x480-16@60\" or the module parameter\nstring without any regard for the length (which is most likely longer).\n\nUse kstrump() for the OF mode and free everything before freeing \u0027info."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:17:10.332Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/47008d59c60ed896085da95f8d4dd40e1677dd3a"
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          "url": "https://git.kernel.org/stable/c/d374f76e1257ecc5d691a765c512ed2c29a44741"
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        {
          "url": "https://git.kernel.org/stable/c/d8421e09382cfe0bd2a044c8b0a822f64855dd4e"
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      "title": "fbdev: sm501fb: Fix buffer errors in OF binding code",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74320",
    "datePublished": "2026-08-15T05:58:16.805Z",
    "dateReserved": "2026-08-15T05:44:03.884Z",
    "dateUpdated": "2026-08-17T05:17:10.332Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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