CVE-2026-80594 (GCVE-0-2026-80594)
Vulnerability from cvelistv5
Published
2026-08-28 06:48
Modified
2026-08-28 06:48
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing The driver parses CDC union descriptors in ims_pcu_get_cdc_union_desc() by iterating through the extra descriptor data. However, it does not verify that the bLength of each descriptor is at least 2. A malicious device could provide a descriptor with bLength = 0, leading to an infinite loop in the driver. Add a check to ensure bLength is at least 2 before proceeding with parsing.
References
Impacted products
Vendor Product Version
Linux Linux Version: 628329d52474323938a03826941e166bc7c8eff4
Version: 628329d52474323938a03826941e166bc7c8eff4
Version: 628329d52474323938a03826941e166bc7c8eff4
Version: 628329d52474323938a03826941e166bc7c8eff4
Version: 628329d52474323938a03826941e166bc7c8eff4
Version: 628329d52474323938a03826941e166bc7c8eff4
Version: 628329d52474323938a03826941e166bc7c8eff4
Version: 628329d52474323938a03826941e166bc7c8eff4
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/input/misc/ims-pcu.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "3.10"
            },
            {
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              "status": "unaffected",
              "version": "0",
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            },
            {
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              "status": "unaffected",
              "version": "5.10.261",
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            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
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            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
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            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
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            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
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            {
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              "status": "unaffected",
              "version": "6.18.40",
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              "status": "unaffected",
              "version": "7.1.5",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: ims-pcu - fix potential infinite loop in CDC union descriptor parsing\n\nThe driver parses CDC union descriptors in ims_pcu_get_cdc_union_desc()\nby iterating through the extra descriptor data. However, it does not\nverify that the bLength of each descriptor is at least 2. A malicious\ndevice could provide a descriptor with bLength = 0, leading to an\ninfinite loop in the driver.\n\nAdd a check to ensure bLength is at least 2 before proceeding with\nparsing."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-28T06:48:21.426Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28"
        },
        {
          "url": "https://git.kernel.org/stable/c/6314bd9e2a6b3362998dc85485dd4b0f133a3532"
        },
        {
          "url": "https://git.kernel.org/stable/c/76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32"
        },
        {
          "url": "https://git.kernel.org/stable/c/e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295"
        },
        {
          "url": "https://git.kernel.org/stable/c/b847f2725ef47a26b3d01eca3d54fd811e5a544d"
        },
        {
          "url": "https://git.kernel.org/stable/c/383934c249a9817d242d02d30bfbc8defbf0d533"
        },
        {
          "url": "https://git.kernel.org/stable/c/bbbe31486cf2d12177462e4a814244c2597c9849"
        },
        {
          "url": "https://git.kernel.org/stable/c/d4579af29e67ca8722db0a1194227f8015c8981d"
        }
      ],
      "title": "Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80594",
    "datePublished": "2026-08-28T06:48:21.426Z",
    "dateReserved": "2026-08-26T14:34:25.770Z",
    "dateUpdated": "2026-08-28T06:48:21.426Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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