CVE-2026-80594 (GCVE-0-2026-80594)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:48 – Updated: 2026-08-28 06:48
VLAI
Title
Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 67a038c5a7c9bd8aabe6fba8ac9d2e31c0bd5a28 (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 6314bd9e2a6b3362998dc85485dd4b0f133a3532 (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 76eeeb3a8e3c13d5c0ef28666b57dcb5cc101a32 (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < e3f93d63dcd48c1f0ba9041f2ffa8aea7170e295 (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < b847f2725ef47a26b3d01eca3d54fd811e5a544d (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 383934c249a9817d242d02d30bfbc8defbf0d533 (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < bbbe31486cf2d12177462e4a814244c2597c9849 (git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < d4579af29e67ca8722db0a1194227f8015c8981d (git)
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Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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      "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"
      },
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          "url": "https://git.kernel.org/stable/c/6314bd9e2a6b3362998dc85485dd4b0f133a3532"
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        {
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    "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"
  },
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      "date": "2026-09-01",
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      "percentile": "0.07261"
    },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-31T10:04:23+00:00",
      "cve": "CVE-2026-80594",
      "id": "CVE-2026-80594",
      "initial_release_date": "2026-08-28T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80594.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.