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Bluetooth: HIDP: validate numbered report payloads

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: validate numbered report payloads When hidp_get_raw_report() waits for a numbered report, hidp_process_data() compares the expected report number with skb->data[0]. A connected HIDP peer can reply with only a DATA transaction header, leaving the skb empty after the header is removed. KMSAN reports an uninitialized-value use in hidp_session_run(), with the value originating in __alloc_skb() through vhci_write(). The transaction header checks remove the empty-frame reports, but this report remains until the payload check is added. The comparison can also consume a peer-controlled byte beyond the declared L2CAP PDU. A DATA | FEATURE response followed by an extra 0x01 byte made the current code accept that byte as report ID 1 and complete HIDIOCGFEATURE with a zero-byte result. With this change the malformed response is rejected with -EIO, while a subsequent valid response still succeeds. Require a payload byte before comparing a numbered report ID. Unnumbered reports continue to accept an empty payload.

Announced Source revision 1
Original source ↗

CVE-2026-74507

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-74507

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "0ff1731a1ae51e8e48cd559d70db536281c47f8e",
        "lessThan": "011bf4350d941f1995b2bd4b815ee206cacf2b8e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0ff1731a1ae51e8e48cd559d70db536281c47f8e",
        "lessThan": "689d8bb7fee96b7196b572b015b6055c6616ce0c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0ff1731a1ae51e8e48cd559d70db536281c47f8e",
        "lessThan": "c73beb320f5705e508bf7d385b8cc5ef8d9c8b69",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0ff1731a1ae51e8e48cd559d70db536281c47f8e",
        "lessThan": "b7ad105d46acd828e424454815e4cd31069e047a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0ff1731a1ae51e8e48cd559d70db536281c47f8e",
        "lessThan": "7e7162427659b70ea17cd41b1f79e2e64c246690",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0ff1731a1ae51e8e48cd559d70db536281c47f8e",
        "lessThan": "27cc0e603355c585f1e5da8398faa4d36d498188",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0ff1731a1ae51e8e48cd559d70db536281c47f8e",
        "lessThan": "9c841f59e10b5d75c398a3fc6b2da448d2a2276b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0ff1731a1ae51e8e48cd559d70db536281c47f8e",
        "lessThan": "34f53d27b81a16a02828c8fdfa4e02badc326f17",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/bluetooth/hidp/core.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.39"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.39",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.265",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.216",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.183",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.151",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.103",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.44",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.8",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/bluetooth/hidp/core.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-74507

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#33184 · Revision 1
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Publisher date
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