Vulnerability-Lookup

CVE-2026-98887 (GCVE-0-2026-98887)

Vulnerability from cvelistv5 – Published: 2026-10-23 11:37 – Updated: 2026-10-23 11:37

Title

wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO hwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload to a struct hwsim_tx_rate * and unconditionally reads IEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds the attribute from above (NLA_BINARY .len is a maximum) and the op sets GENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is accepted and the loop reads past the payload. Require the exact length in the policy, so a malformed attribute is rejected before the handler runs.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7056 records in the last 180 days details

References

7 references

URL	Tags
https://git.kernel.org/stable/c/3a96bb65b4b820d8b…
https://git.kernel.org/stable/c/59e1f2a0242232b4a…
https://git.kernel.org/stable/c/1ae85bb34fe351065…
https://git.kernel.org/stable/c/6f6368b20f8c9481f…
https://git.kernel.org/stable/c/b5b1234bbfa25537f…
https://git.kernel.org/stable/c/13edd8ea7ff2ce6a9…
https://git.kernel.org/stable/c/3dc723ac78a6e4fa0…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3a96bb65b4b820d8b41fa155781ec1c29e3479d4 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 59e1f2a0242232b4a3af144ae317d3913fc09046 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1ae85bb34fe3510659b86d6a5f8036dd498233f8 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b5b1234bbfa25537fb9a5c0d62c328ed4547f721 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3dc723ac78a6e4fa0fd49e27e487ed319da40a9f (git) Affected: 0 , < 5.10.271 (semver) Affected: 0 , < 5.15.222 (semver) Affected: 0 , < 6.1.189 (semver) Affected: 0 , < 6.6.158 (semver) Affected: 0 , < 6.12.111 (semver) Affected: 0 , < 6.18.53 (semver)	guessed
Linux	Linux	Unaffected: 5.10.271 , ≤ 5.10.* (semver) Unaffected: 5.15.222 , ≤ 5.15.* (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/virtual/mac80211_hwsim_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3a96bb65b4b820d8b41fa155781ec1c29e3479d4",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
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              "status": "affected",
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThan": "6.1.189",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.111",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/virtual/mac80211_hwsim_main.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "vulnerable": true
                },
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                  "versionEndExcluding": "5.15.222",
                  "vulnerable": true
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                  "versionEndExcluding": "6.1.189",
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                },
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                  "versionEndExcluding": "6.6.158",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.12.111",
                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-23T11:37:44.605Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8"
        },
        {
          "url": "https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"
        },
        {
          "url": "https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721"
        },
        {
          "url": "https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"
        }
      ],
      "title": "wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98887",
    "datePublished": "2026-10-23T11:37:44.605Z",
    "dateReserved": "2026-09-25T10:25:14.378Z",
    "dateUpdated": "2026-10-23T11:37:44.605Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98887",
      "date": "2026-10-24",
      "epss": "0.00215",
      "percentile": "0.11288"
    },
    "microsoft_vex": {
      "current_release_date": "2026-10-24T01:05:16.000Z",
      "cve": "CVE-2026-98887",
      "id": "msrc_CVE-2026-98887",
      "initial_release_date": "2026-10-24T01:04:04.000Z",
      "product_status:known_affected": "1",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98887.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/wireless/virtual/mac80211_hwsim_main.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                  {
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "b5b1234bbfa25537fb9a5c0d62c328ed4547f721",
                    "status": "affected",
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7",
                    "status": "affected",
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "3dc723ac78a6e4fa0fd49e27e487ed319da40a9f",
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                    "versionType": "git"
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                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
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                  {
                    "lessThan": "6.1.189",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.6.158",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.12.111",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.18.53",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/wireless/virtual/mac80211_hwsim_main.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
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                    "status": "unaffected",
                    "version": "5.10.271",
                    "versionType": "semver"
                  },
                  {
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                    "status": "unaffected",
                    "version": "5.15.222",
                    "versionType": "semver"
                  },
                  {
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                    "status": "unaffected",
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                    "versionType": "semver"
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                  {
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                    "status": "unaffected",
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                    "versionType": "semver"
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                  {
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                    "versionType": "original_commit_for_fix"
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                ]
              }
            ],
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          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs."
          }
        ],
        "id": "CVE-2026-98887",
        "lastModified": "2026-10-23T12:18:22.460",
        "metrics": {},
        "published": "2026-10-23T12:18:22.460",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}

FKIE_CVE-2026-98887

Vulnerability from fkie_nvd - Published: 2026-10-23 12:18 - Updated: 2026-10-23 12:18

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/virtual/mac80211_hwsim_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3a96bb65b4b820d8b41fa155781ec1c29e3479d4",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "59e1f2a0242232b4a3af144ae317d3913fc09046",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "1ae85bb34fe3510659b86d6a5f8036dd498233f8",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695",
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
              "lessThan": "13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "3dc723ac78a6e4fa0fd49e27e487ed319da40a9f",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.271",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.222",
              "status": "affected",
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            {
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            {
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/virtual/mac80211_hwsim_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs."
    }
  ],
  "id": "CVE-2026-98887",
  "lastModified": "2026-10-23T12:18:22.460",
  "metrics": {},
  "published": "2026-10-23T12:18:22.460",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-VJMV-QR7M-GC5Q

Vulnerability from github – Published: 2026-10-23 12:31 – Updated: 2026-10-23 12:31

Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO

hwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload to a struct hwsim_tx_rate * and unconditionally reads IEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds the attribute from above (NLA_BINARY .len is a maximum) and the op sets GENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is accepted and the loop reads past the payload.

Require the exact length in the policy, so a malformed attribute is rejected before the handler runs.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-98887"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-23T12:18:22Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs.",
  "id": "GHSA-vjmv-qr7m-gc5q",
  "modified": "2026-10-23T12:31:36Z",
  "published": "2026-10-23T12:31:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98887"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

MSRC_CVE-2026-98887

Vulnerability from csaf_microsoft - Published: 2026-10-24 01:04 - Updated: 2026-10-24 01:05

Summary

wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO

Scope

1 vulnerability in this advisory, including CVE-2026-98887.

CVE-2026-98887

Known affected: 1 product Under investigation: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

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.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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CVE-2026-98887 (GCVE-0-2026-98887)

FKIE_CVE-2026-98887

GHSA-VJMV-QR7M-GC5Q

MSRC_CVE-2026-98887

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