CVE-2026-43316 (GCVE-0-2026-43316)
Vulnerability from cvelistv5
Published
2026-05-08 13:26
Modified
2026-05-11 22:22
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: media: solo6x10: Check for out of bounds chip_id Clang with CONFIG_UBSAN_SHIFT=y noticed a condition where a signed type (literal "1" is an "int") could end up being shifted beyond 32 bits, so instrumentation was added (and due to the double is_tw286x() call seen via inlining), Clang decides the second one must now be undefined behavior and elides the rest of the function[1]. This is a known problem with Clang (that is still being worked on), but we can avoid the entire problem by actually checking the existing max chip ID, and now there is no runtime instrumentation added at all since everything is known to be within bounds. Additionally use an unsigned value for the shift to remove the instrumentation even without the explicit bounds checking. [hverkuil: fix checkpatch warning for is_tw286x]
References
Impacted products
Vendor Product Version
Linux Linux Version: faa4fd2a09517b39cc1f5d622453f97a59acfdac
Version: faa4fd2a09517b39cc1f5d622453f97a59acfdac
Version: faa4fd2a09517b39cc1f5d622453f97a59acfdac
Version: faa4fd2a09517b39cc1f5d622453f97a59acfdac
Version: faa4fd2a09517b39cc1f5d622453f97a59acfdac
Version: faa4fd2a09517b39cc1f5d622453f97a59acfdac
Version: faa4fd2a09517b39cc1f5d622453f97a59acfdac
Version: faa4fd2a09517b39cc1f5d622453f97a59acfdac
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/solo6x10/solo6x10-tw28.c"
          ],
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      "cpeApplicability": [
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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\nmedia: solo6x10: Check for out of bounds chip_id\n\nClang with CONFIG_UBSAN_SHIFT=y noticed a condition where a signed type\n(literal \"1\" is an \"int\") could end up being shifted beyond 32 bits,\nso instrumentation was added (and due to the double is_tw286x() call\nseen via inlining), Clang decides the second one must now be undefined\nbehavior and elides the rest of the function[1]. This is a known problem\nwith Clang (that is still being worked on), but we can avoid the entire\nproblem by actually checking the existing max chip ID, and now there is\nno runtime instrumentation added at all since everything is known to be\nwithin bounds.\n\nAdditionally use an unsigned value for the shift to remove the\ninstrumentation even without the explicit bounds checking.\n\n[hverkuil: fix checkpatch warning for is_tw286x]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:22:12.135Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c327192ca26670cf6e588c1eeda66cd2fa97630e"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b3dadada2417782a63ce32dae05bafe1c949e3f"
        },
        {
          "url": "https://git.kernel.org/stable/c/603e3859393ee2ce91393b7d05e6e56e4b66e5cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/33af366211ee78e3b074ff44a16121e537e86826"
        },
        {
          "url": "https://git.kernel.org/stable/c/5849ae68d7b8b6ad55cc1bf0d227dd2ae6362528"
        },
        {
          "url": "https://git.kernel.org/stable/c/d29f33b2cf98e4901cd5457d1ee34062e808df73"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d6db0c6bbbfd8d7bbdbf7ab6a9c003752abf116"
        },
        {
          "url": "https://git.kernel.org/stable/c/0fdf6323c35a134f206dcad5babb4ff488552076"
        }
      ],
      "title": "media: solo6x10: Check for out of bounds chip_id",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43316",
    "datePublished": "2026-05-08T13:26:12.217Z",
    "dateReserved": "2026-05-01T14:12:56.001Z",
    "dateUpdated": "2026-05-11T22:22:12.135Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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