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FKIE_CVE-2026-74320

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-08-17 06:19
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0bc3d909a49e1fd8b8c3f2160d526e672c40621d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47008d59c60ed896085da95f8d4dd40e1677dd3a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/48cf0f4c6581ec90104cec9c5bf794a8bf347e30
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9057e3f5db39f0ef0dac2f59f2bc59bf17e36c31
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b2ff450f7f5cfc7143cab57c3ad70293ba8b822a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d374f76e1257ecc5d691a765c512ed2c29a44741
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8421e09382cfe0bd2a044c8b0a822f64855dd4e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de590cdf7efec8a0b6da90ae2ab5fc5df26810b9
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/sm501fb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0bc3d909a49e1fd8b8c3f2160d526e672c40621d",
              "status": "affected",
              "version": "4295f9bf74a885da390abc49a3b42a011c1bb890",
              "versionType": "git"
            },
            {
              "lessThan": "47008d59c60ed896085da95f8d4dd40e1677dd3a",
              "status": "affected",
              "version": "4295f9bf74a885da390abc49a3b42a011c1bb890",
              "versionType": "git"
            },
            {
              "lessThan": "d374f76e1257ecc5d691a765c512ed2c29a44741",
              "status": "affected",
              "version": "4295f9bf74a885da390abc49a3b42a011c1bb890",
              "versionType": "git"
            },
            {
              "lessThan": "b2ff450f7f5cfc7143cab57c3ad70293ba8b822a",
              "status": "affected",
              "version": "4295f9bf74a885da390abc49a3b42a011c1bb890",
              "versionType": "git"
            },
            {
              "lessThan": "9057e3f5db39f0ef0dac2f59f2bc59bf17e36c31",
              "status": "affected",
              "version": "4295f9bf74a885da390abc49a3b42a011c1bb890",
              "versionType": "git"
            },
            {
              "lessThan": "de590cdf7efec8a0b6da90ae2ab5fc5df26810b9",
              "status": "affected",
              "version": "4295f9bf74a885da390abc49a3b42a011c1bb890",
              "versionType": "git"
            },
            {
              "lessThan": "48cf0f4c6581ec90104cec9c5bf794a8bf347e30",
              "status": "affected",
              "version": "4295f9bf74a885da390abc49a3b42a011c1bb890",
              "versionType": "git"
            },
            {
              "lessThan": "d8421e09382cfe0bd2a044c8b0a822f64855dd4e",
              "status": "affected",
              "version": "4295f9bf74a885da390abc49a3b42a011c1bb890",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/sm501fb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.39"
            },
            {
              "lessThan": "2.6.39",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-74320",
  "lastModified": "2026-08-17T06:19:26.403",
  "metrics": {},
  "published": "2026-08-15T06:22:32.457",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0bc3d909a49e1fd8b8c3f2160d526e672c40621d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/47008d59c60ed896085da95f8d4dd40e1677dd3a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/48cf0f4c6581ec90104cec9c5bf794a8bf347e30"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9057e3f5db39f0ef0dac2f59f2bc59bf17e36c31"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b2ff450f7f5cfc7143cab57c3ad70293ba8b822a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d374f76e1257ecc5d691a765c512ed2c29a44741"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d8421e09382cfe0bd2a044c8b0a822f64855dd4e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/de590cdf7efec8a0b6da90ae2ab5fc5df26810b9"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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