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wifi: libipw: fix key index receive bound checks

Type: advisorySource: OSV1 source record

In the Linux kernel, the following vulnerability has been resolved: wifi: libipw: fix key index receive bound checks libipw_rx() reads skb->data[hdrlen + 3] to extract the WEP key index in both the software-decrypt key selection path and the hardware-decrypted IV/ICV strip path. In both places the existing guard only checks skb->len >= hdrlen + 3, which proves bytes up to hdrlen + 2 but not the byte at hdrlen + 3. Require hdrlen + 4 bytes before reading that item in both paths. This is a local source-boundary check only; it does not change the key index semantics.

Announced Source revision 1
Original source ↗

CVE-2026-93803

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: osv:CVE-2026-93803

Kernel

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
5.10.271

Source reference: /affected/1/ranges

5.15.222

Source reference: /affected/1/ranges

6.1.189

Source reference: /affected/1/ranges

6.6.158

Source reference: /affected/1/ranges

6.12.111

Source reference: /affected/1/ranges

6.18.53

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
        "type": "GIT",
        "events": [
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            "introduced": "b453872c35cfcbdbf5a794737817f7d4e7b1b579"
          },
          {
            "fixed": "bb18262c19feb690ddde58c70e3ad04bc6fe566e"
          },
          {
            "fixed": "09d4a1bc3a08bb0e19bdf250b9f575cfef0bae82"
          },
          {
            "fixed": "2836a870f612a8a6d9e390d00fa2cf6c90aa5808"
          },
          {
            "fixed": "0b61c465ea62063593bc9ac186871b69e58ae991"
          },
          {
            "fixed": "062840bdc9ee06169b3c371bf66711f1d7ec0bf4"
          },
          {
            "fixed": "c54b643e9a0936d038921c547736574fd7382cea"
          },
          {
            "fixed": "74ed3669f26803b1761c1f55403062bea44c3466"
          }
        ]
      }
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93803.json"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "2.6.14"
          },
          {
            "fixed": "5.10.271"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "5.11.0"
          },
          {
            "fixed": "5.15.222"
          }
        ]
      },
      {
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            "introduced": "5.16.0"
          },
          {
            "fixed": "6.1.189"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.2.0"
          },
          {
            "fixed": "6.6.158"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.7.0"
          },
          {
            "fixed": "6.12.111"
          }
        ]
      },
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "6.13.0"
          },
          {
            "fixed": "6.18.53"
          }
        ]
      }
    ],
    "package": {
      "name": "Kernel",
      "ecosystem": "Linux"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93803.json"
    }
  }
]
Related CVEs
CVE-2026-93803

Source reference: /id

Publisher severity

No explicit severity was provided.

Event
#83531 · Revision 1
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Publisher date
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