CVE-2026-64506 (GCVE-0-2026-64506)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:52 – Updated: 2026-07-25 08:52
VLAI
Title
wifi: rtw89: correct drop logic for malformed AMPDU frames
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: correct drop logic for malformed AMPDU frames The previous commit aims to fix issue caused by malformed AMPDU frames. But the drop logic fails to deal with the first AMPDU packet paired with certain range of sequence number, and leads to unexpected packet drop. It is more likely to encounter this failure when there are busy traffic during rekey process and could lead to disconnection from the AP. Fix this by adding a initial state judgement and only reset status during pairwise rekey.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bda294ed0ed05ada2a832b19a55dd4a6fa72b1a1 , < 994994cfadaf1fd362dea9b8d9d633f85dc1b3c3 (git)
Affected: bda294ed0ed05ada2a832b19a55dd4a6fa72b1a1 , < 63ccdfac8677387dfdbd9d4336089e9823280704 (git)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
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          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw89/core.c",
            "drivers/net/wireless/realtek/rtw89/mac80211.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "versions": [
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          "versions": [
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              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.4",
                  "versionStartIncluding": "7.1",
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                },
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: correct drop logic for malformed AMPDU frames\n\nThe previous commit aims to fix issue caused by malformed AMPDU frames.\nBut the drop logic fails to deal with the first AMPDU packet paired with\ncertain range of sequence number, and leads to unexpected packet drop.\nIt is more likely to encounter this failure when there are busy traffic\nduring rekey process and could lead to disconnection from the AP.\nFix this by adding a initial state judgement and only reset status\nduring pairwise rekey."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T08:52:00.322Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/994994cfadaf1fd362dea9b8d9d633f85dc1b3c3"
        },
        {
          "url": "https://git.kernel.org/stable/c/63ccdfac8677387dfdbd9d4336089e9823280704"
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      ],
      "title": "wifi: rtw89: correct drop logic for malformed AMPDU frames",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64506",
    "datePublished": "2026-07-25T08:52:00.322Z",
    "dateReserved": "2026-07-19T15:36:31.793Z",
    "dateUpdated": "2026-07-25T08:52:00.322Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-08-03",
      "epss": "0.00161",
      "percentile": "0.05797"
    },
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-07-29T13:24:47+00:00",
      "cve": "CVE-2026-64506",
      "id": "CVE-2026-64506",
      "initial_release_date": "2026-07-25T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: rtw89: correct drop logic for malformed AMPDU frames",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64506.json",
      "version": "3"
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    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T15:58:05Z",
      "cve": "CVE-2026-64506",
      "id": "CVE-2026-64506",
      "initial_release_date": "2026-07-25T15:58:05Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64506",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64506.json",
      "version": "2"
    }
  }
}



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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.
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  • 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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