CVE-2026-93061 (GCVE-0-2026-93061)
Vulnerability from cvelistv5
Published
2026-09-17 16:10
Modified
2026-10-19 09:04
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Avoid stack over-read in debug output helpers host1x_debug_output() and host1x_debug_cont() used vsnprintf(), which returns the length the formatted string would have reached with an unbounded buffer. That return value was passed straight to o->fn as the number of bytes to emit. This could cause a read past end of the output buffer if a call to host1x_debug_* produced a string longer than 256 bytes. This only affected the debugfs files as the printk debug sink ignores the number of bytes. In practice, this is very unlikely to occur. Fix by switching to vscnprintf(), which returns the number of bytes actually written.
References
Impacted products
Vendor Product Version
Linux Linux Version: 6236451d83a720072053855fa63d51934024a707
Version: 6236451d83a720072053855fa63d51934024a707
Version: 6236451d83a720072053855fa63d51934024a707
Version: 6236451d83a720072053855fa63d51934024a707
Version: 6236451d83a720072053855fa63d51934024a707
Version: 6236451d83a720072053855fa63d51934024a707
Version: 6236451d83a720072053855fa63d51934024a707
Version: 6236451d83a720072053855fa63d51934024a707
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{
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpu: host1x: Avoid stack over-read in debug output helpers\n\nhost1x_debug_output() and host1x_debug_cont() used vsnprintf(), which\nreturns the length the formatted string would have reached with an\nunbounded buffer. That return value was passed straight to o-\u003efn as\nthe number of bytes to emit.\n\nThis could cause a read past end of the output buffer if a call to\nhost1x_debug_* produced a string longer than 256 bytes. This only\naffected the debugfs files as the printk debug sink ignores the\nnumber of bytes. In practice, this is very unlikely to occur.\n\nFix by switching to vscnprintf(), which returns the number of bytes\nactually written."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:04:57.193Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/41517c46002afd717f0f2d0975c740dd610f87fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/ebab3a25a0403bcbc0c40ef77d69d23270e45547"
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          "url": "https://git.kernel.org/stable/c/4f9f0afdbdf513a49065207ff6b7e1d15051175a"
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          "url": "https://git.kernel.org/stable/c/819dd96a6571f2b12496b080e5187ba3fa897232"
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        },
        {
          "url": "https://git.kernel.org/stable/c/bc17ac285fb708f22a8fa2c0ed32eceb1d37e6d6"
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      "title": "gpu: host1x: Avoid stack over-read in debug output helpers",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93061",
    "datePublished": "2026-09-17T16:10:47.786Z",
    "dateReserved": "2026-09-17T15:57:05.660Z",
    "dateUpdated": "2026-10-19T09:04:57.193Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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