CVE-2026-93061

Full vulnerability record from the local CVENow database.

Description

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.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-17 17:17:59.767000

Last modified

2026-10-19 10:16:55.953000

View original CVE JSON

{
  "id": "CVE-2026-93061",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-17T17:17:59.767",
  "lastModified": "2026-10-19T10:16:55.953",
  "vulnStatus": "Received",
  "cveTags": [],
  "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->fn 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."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/gpu/host1x/debug.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6236451d83a720072053855fa63d51934024a707",
              "lessThan": "d7a560dc912756fd8b39b28b10818d931e863d2d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6236451d83a720072053855fa63d51934024a707",
              "lessThan": "41517c46002afd717f0f2d0975c740dd610f87fe",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6236451d83a720072053855fa63d51934024a707",
              "lessThan": "ebab3a25a0403bcbc0c40ef77d69d23270e45547",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6236451d83a720072053855fa63d51934024a707",
              "lessThan": "4f9f0afdbdf513a49065207ff6b7e1d15051175a",
              "versionType": "git",
              "status": "affected"
            },
            {
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              "lessThan": "819dd96a6571f2b12496b080e5187ba3fa897232",
              "versionType": "git",
              "status": "affected"
            },
            {
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              "lessThan": "9ad7a6ccc7b839247663d57d3dbb4481dec492de",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6236451d83a720072053855fa63d51934024a707",
              "lessThan": "b00290d1dc23a5ef9a0d3103aad1fe2274e86569",
              "versionType": "git",
              "status": "affected"
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              "lessThan": "bc17ac285fb708f22a8fa2c0ed32eceb1d37e6d6",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/gpu/host1x/debug.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3.10",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "3.10",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.10.270",
              "lessThanOrEqual": "5.10.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "5.15.221",
              "lessThanOrEqual": "5.15.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.188",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.157",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.110",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.52",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.6",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/41517c46002afd717f0f2d0975c740dd610f87fe",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/819dd96a6571f2b12496b080e5187ba3fa897232",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9ad7a6ccc7b839247663d57d3dbb4481dec492de",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b00290d1dc23a5ef9a0d3103aad1fe2274e86569",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bc17ac285fb708f22a8fa2c0ed32eceb1d37e6d6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d7a560dc912756fd8b39b28b10818d931e863d2d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ebab3a25a0403bcbc0c40ef77d69d23270e45547",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}