CVE-2022-50097 (GCVE-0-2022-50097)
Vulnerability from cvelistv5
Published
2025-06-18 11:02
Modified
2025-06-18 11:02
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: s3fb: Check the size of screen before memset_io() In the function s3fb_set_par(), the value of 'screen_size' is calculated by the user input. If the user provides the improper value, the value of 'screen_size' may larger than 'info->screen_size', which may cause the following bug: [ 54.083733] BUG: unable to handle page fault for address: ffffc90003000000 [ 54.083742] #PF: supervisor write access in kernel mode [ 54.083744] #PF: error_code(0x0002) - not-present page [ 54.083760] RIP: 0010:memset_orig+0x33/0xb0 [ 54.083782] Call Trace: [ 54.083788] s3fb_set_par+0x1ec6/0x4040 [ 54.083806] fb_set_var+0x604/0xeb0 [ 54.083836] do_fb_ioctl+0x234/0x670 Fix the this by checking the value of 'screen_size' before memset_io().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/52461d387cc8c8f8dc40320caa2e9e101f73e7ba
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eacb50f1733660911827d7c3720f4c5425d0cdda
Impacted products
Vendor Product Version
Linux Linux Version: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b
Version: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b
Version: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b
Version: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b
Version: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b
Version: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b
Version: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b
Version: a268422de8bf1b4c0cb97987b6c329c9f6a3da4b
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   Linux Linux Version: 2.6.21
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/s3fb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/s3fb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.21"
            },
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              "lessThan": "2.6.21",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "4.14.291",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.256",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.4.211",
              "versionType": "semver"
            },
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              "status": "unaffected",
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            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.61",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.18",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.19.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "vulnerable": true
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                  "versionStartIncluding": "2.6.21",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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                {
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                {
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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\nvideo: fbdev: s3fb: Check the size of screen before memset_io()\n\nIn the function s3fb_set_par(), the value of \u0027screen_size\u0027 is\ncalculated by the user input. If the user provides the improper value,\nthe value of \u0027screen_size\u0027 may larger than \u0027info-\u003escreen_size\u0027, which\nmay cause the following bug:\n\n[   54.083733] BUG: unable to handle page fault for address: ffffc90003000000\n[   54.083742] #PF: supervisor write access in kernel mode\n[   54.083744] #PF: error_code(0x0002) - not-present page\n[   54.083760] RIP: 0010:memset_orig+0x33/0xb0\n[   54.083782] Call Trace:\n[   54.083788]  s3fb_set_par+0x1ec6/0x4040\n[   54.083806]  fb_set_var+0x604/0xeb0\n[   54.083836]  do_fb_ioctl+0x234/0x670\n\nFix the this by checking the value of \u0027screen_size\u0027 before memset_io()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T11:02:34.589Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239"
        },
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        {
          "url": "https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3"
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        {
          "url": "https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81"
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        },
        {
          "url": "https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8"
        }
      ],
      "title": "video: fbdev: s3fb: Check the size of screen before memset_io()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50097",
    "datePublished": "2025-06-18T11:02:34.589Z",
    "dateReserved": "2025-06-18T10:57:27.411Z",
    "dateUpdated": "2025-06-18T11:02:34.589Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50097\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-06-18T11:15:38.963\",\"lastModified\":\"2025-06-18T13:47:40.833\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nvideo: fbdev: s3fb: Check the size of screen before memset_io()\\n\\nIn the function s3fb_set_par(), the value of \u0027screen_size\u0027 is\\ncalculated by the user input. If the user provides the improper value,\\nthe value of \u0027screen_size\u0027 may larger than \u0027info-\u003escreen_size\u0027, which\\nmay cause the following bug:\\n\\n[   54.083733] BUG: unable to handle page fault for address: ffffc90003000000\\n[   54.083742] #PF: supervisor write access in kernel mode\\n[   54.083744] #PF: error_code(0x0002) - not-present page\\n[   54.083760] RIP: 0010:memset_orig+0x33/0xb0\\n[   54.083782] Call Trace:\\n[   54.083788]  s3fb_set_par+0x1ec6/0x4040\\n[   54.083806]  fb_set_var+0x604/0xeb0\\n[   54.083836]  do_fb_ioctl+0x234/0x670\\n\\nFix the this by checking the value of \u0027screen_size\u0027 before memset_io().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/52461d387cc8c8f8dc40320caa2e9e101f73e7ba\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eacb50f1733660911827d7c3720f4c5425d0cdda\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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