Vulnerability-Lookup

CVE-2026-93149 (GCVE-0-2026-93149)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11

Title

wifi: mac80211_hwsim: avoid NULL skb in stop queue drain

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: avoid NULL skb in stop queue drain mac80211_hwsim_stop() drops any frames left in data->pending. The loop currently checks skb_queue_empty() and then dequeues separately. That split is racy with TX status handling, which can remove a pending frame under the queue lock. If the last entry is removed after the empty check, skb_dequeue() returns NULL and the stop path passes that NULL skb to ieee80211_free_txskb(). Use skb_dequeue() as the loop condition instead. The dequeue result is the object that stop owns and frees, and a concurrent status completion that empties the queue simply makes the loop terminate.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/d131027054a8dd922…
https://git.kernel.org/stable/c/c40ba47f2ba1951cb…
https://git.kernel.org/stable/c/2817431a61557f46d…
https://git.kernel.org/stable/c/e7fccad2c8e6ef6bb…
https://git.kernel.org/stable/c/1c2a4ab6efa26415d…
https://git.kernel.org/stable/c/158438cd6ad69d6dd…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: bd18de517923903a177508fc8813f44e717b1c00 , < d131027054a8dd922dda01fe8d381abe5af4970b (git) Affected: bd18de517923903a177508fc8813f44e717b1c00 , < c40ba47f2ba1951cb32ea048667ed014d36a5749 (git) Affected: bd18de517923903a177508fc8813f44e717b1c00 , < 2817431a61557f46dc63077b7cc126bc906c242e (git) Affected: bd18de517923903a177508fc8813f44e717b1c00 , < e7fccad2c8e6ef6bbafe509c95869d161d0f466b (git) Affected: bd18de517923903a177508fc8813f44e717b1c00 , < 1c2a4ab6efa26415dd131b8c222e7893fda03435 (git) Affected: bd18de517923903a177508fc8813f44e717b1c00 , < 158438cd6ad69d6dd7d871582c38baf22169fede (git) Affected: 78bf3c6131488b00386acd9aff1ea4e6c44fa38e (git) Affected: a9028333001f793b2724e8be42fce3336de2cf1c (git) Affected: 7019c9f385b264a2d6f685028268422d55087e37 (git) Affected: 5.4.129 , < 5.5 (semver) Affected: 5.10.47 , < 5.11 (semver) Affected: 5.12.14 , < 5.13 (semver)	guessed
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (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": "d131027054a8dd922dda01fe8d381abe5af4970b",
              "status": "affected",
              "version": "bd18de517923903a177508fc8813f44e717b1c00",
              "versionType": "git"
            },
            {
              "lessThan": "c40ba47f2ba1951cb32ea048667ed014d36a5749",
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            },
            {
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              "versionType": "git"
            },
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              "lessThan": "e7fccad2c8e6ef6bbafe509c95869d161d0f466b",
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "bd18de517923903a177508fc8813f44e717b1c00",
              "versionType": "git"
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            {
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              "status": "affected",
              "version": "bd18de517923903a177508fc8813f44e717b1c00",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "78bf3c6131488b00386acd9aff1ea4e6c44fa38e",
              "versionType": "git"
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            {
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              "version": "a9028333001f793b2724e8be42fce3336de2cf1c",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "7019c9f385b264a2d6f685028268422d55087e37",
              "versionType": "git"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.129",
              "versionType": "semver"
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            {
              "lessThan": "5.11",
              "status": "affected",
              "version": "5.10.47",
              "versionType": "semver"
            },
            {
              "lessThan": "5.13",
              "status": "affected",
              "version": "5.12.14",
              "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": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.4.129",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.10.47",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.12.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: avoid NULL skb in stop queue drain\n\nmac80211_hwsim_stop() drops any frames left in data-\u003epending. The loop\ncurrently checks skb_queue_empty() and then dequeues separately.\n\nThat split is racy with TX status handling, which can remove a pending\nframe under the queue lock. If the last entry is removed after the empty\ncheck, skb_dequeue() returns NULL and the stop path passes that NULL skb\nto ieee80211_free_txskb().\n\nUse skb_dequeue() as the loop condition instead. The dequeue result is the\nobject that stop owns and frees, and a concurrent status completion that\nempties the queue simply makes the loop terminate."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:11:46.136Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b"
        },
        {
          "url": "https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749"
        },
        {
          "url": "https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e"
        },
        {
          "url": "https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b"
        },
        {
          "url": "https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435"
        },
        {
          "url": "https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede"
        }
      ],
      "title": "wifi: mac80211_hwsim: avoid NULL skb in stop queue drain",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93149",
    "datePublished": "2026-09-17T16:11:46.136Z",
    "dateReserved": "2026-09-17T16:02:15.088Z",
    "dateUpdated": "2026-09-17T16:11:46.136Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-93149\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-17T17:18:10.083\",\"lastModified\":\"2026-09-17T17:18:10.083\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: mac80211_hwsim: avoid NULL skb in stop queue drain\\n\\nmac80211_hwsim_stop() drops any frames left in data-\u003epending. The loop\\ncurrently checks skb_queue_empty() and then dequeues separately.\\n\\nThat split is racy with TX status handling, which can remove a pending\\nframe under the queue lock. If the last entry is removed after the empty\\ncheck, skb_dequeue() returns NULL and the stop path passes that NULL skb\\nto ieee80211_free_txskb().\\n\\nUse skb_dequeue() as the loop condition instead. The dequeue result is the\\nobject that stop owns and frees, and a concurrent status completion that\\nempties the queue simply makes the loop terminate.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/wireless/virtual/mac80211_hwsim_main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"bd18de517923903a177508fc8813f44e717b1c00\",\"lessThan\":\"d131027054a8dd922dda01fe8d381abe5af4970b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bd18de517923903a177508fc8813f44e717b1c00\",\"lessThan\":\"c40ba47f2ba1951cb32ea048667ed014d36a5749\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bd18de517923903a177508fc8813f44e717b1c00\",\"lessThan\":\"2817431a61557f46dc63077b7cc126bc906c242e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bd18de517923903a177508fc8813f44e717b1c00\",\"lessThan\":\"e7fccad2c8e6ef6bbafe509c95869d161d0f466b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bd18de517923903a177508fc8813f44e717b1c00\",\"lessThan\":\"1c2a4ab6efa26415dd131b8c222e7893fda03435\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bd18de517923903a177508fc8813f44e717b1c00\",\"lessThan\":\"158438cd6ad69d6dd7d871582c38baf22169fede\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"78bf3c6131488b00386acd9aff1ea4e6c44fa38e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a9028333001f793b2724e8be42fce3336de2cf1c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7019c9f385b264a2d6f685028268422d55087e37\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.4.129\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.10.47\",\"lessThan\":\"5.11\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.12.14\",\"lessThan\":\"5.13\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/wireless/virtual/mac80211_hwsim_main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.13\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.13\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.188\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.157\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.110\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.52\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.6\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-09-18T00:11:35Z",
      "cve": "CVE-2026-93149",
      "id": "CVE-2026-93149",
      "initial_release_date": "2026-09-18T00:11:35Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93149",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93149.json",
      "version": "2"
    }
  }
}

FKIE_CVE-2026-93149

Vulnerability from fkie_nvd - Published: 2026-09-17 17:18 - Updated: 2026-09-17 17:18

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b

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": "d131027054a8dd922dda01fe8d381abe5af4970b",
              "status": "affected",
              "version": "bd18de517923903a177508fc8813f44e717b1c00",
              "versionType": "git"
            },
            {
              "lessThan": "c40ba47f2ba1951cb32ea048667ed014d36a5749",
              "status": "affected",
              "version": "bd18de517923903a177508fc8813f44e717b1c00",
              "versionType": "git"
            },
            {
              "lessThan": "2817431a61557f46dc63077b7cc126bc906c242e",
              "status": "affected",
              "version": "bd18de517923903a177508fc8813f44e717b1c00",
              "versionType": "git"
            },
            {
              "lessThan": "e7fccad2c8e6ef6bbafe509c95869d161d0f466b",
              "status": "affected",
              "version": "bd18de517923903a177508fc8813f44e717b1c00",
              "versionType": "git"
            },
            {
              "lessThan": "1c2a4ab6efa26415dd131b8c222e7893fda03435",
              "status": "affected",
              "version": "bd18de517923903a177508fc8813f44e717b1c00",
              "versionType": "git"
            },
            {
              "lessThan": "158438cd6ad69d6dd7d871582c38baf22169fede",
              "status": "affected",
              "version": "bd18de517923903a177508fc8813f44e717b1c00",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "78bf3c6131488b00386acd9aff1ea4e6c44fa38e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a9028333001f793b2724e8be42fce3336de2cf1c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7019c9f385b264a2d6f685028268422d55087e37",
              "versionType": "git"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.129",
              "versionType": "semver"
            },
            {
              "lessThan": "5.11",
              "status": "affected",
              "version": "5.10.47",
              "versionType": "semver"
            },
            {
              "lessThan": "5.13",
              "status": "affected",
              "version": "5.12.14",
              "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": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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: avoid NULL skb in stop queue drain\n\nmac80211_hwsim_stop() drops any frames left in data-\u003epending. The loop\ncurrently checks skb_queue_empty() and then dequeues separately.\n\nThat split is racy with TX status handling, which can remove a pending\nframe under the queue lock. If the last entry is removed after the empty\ncheck, skb_dequeue() returns NULL and the stop path passes that NULL skb\nto ieee80211_free_txskb().\n\nUse skb_dequeue() as the loop condition instead. The dequeue result is the\nobject that stop owns and frees, and a concurrent status completion that\nempties the queue simply makes the loop terminate."
    }
  ],
  "id": "CVE-2026-93149",
  "lastModified": "2026-09-17T17:18:10.083",
  "metrics": {},
  "published": "2026-09-17T17:18:10.083",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-9V89-8PP7-7FMP

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

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

wifi: mac80211_hwsim: avoid NULL skb in stop queue drain

mac80211_hwsim_stop() drops any frames left in data->pending. The loop currently checks skb_queue_empty() and then dequeues separately.

That split is racy with TX status handling, which can remove a pending frame under the queue lock. If the last entry is removed after the empty check, skb_dequeue() returns NULL and the stop path passes that NULL skb to ieee80211_free_txskb().

Use skb_dequeue() as the loop condition instead. The dequeue result is the object that stop owns and frees, and a concurrent status completion that empties the queue simply makes the loop terminate.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-93149"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:18:10Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: avoid NULL skb in stop queue drain\n\nmac80211_hwsim_stop() drops any frames left in data-\u003epending. The loop\ncurrently checks skb_queue_empty() and then dequeues separately.\n\nThat split is racy with TX status handling, which can remove a pending\nframe under the queue lock. If the last entry is removed after the empty\ncheck, skb_dequeue() returns NULL and the stop path passes that NULL skb\nto ieee80211_free_txskb().\n\nUse skb_dequeue() as the loop condition instead. The dequeue result is the\nobject that stop owns and frees, and a concurrent status completion that\nempties the queue simply makes the loop terminate.",
  "id": "GHSA-9v89-8pp7-7fmp",
  "modified": "2026-09-17T18:32:12Z",
  "published": "2026-09-17T18:32:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93149"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Sightings

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Detection rules are retrieved from Rulezet.

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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Action not permitted

CVE-2026-93149 (GCVE-0-2026-93149)

FKIE_CVE-2026-93149

GHSA-9V89-8PP7-7FMP

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