CVE-2026-23444 (GCVE-0-2026-23444)
Vulnerability from cvelistv5
Published
2026-04-03 15:15
Modified
2026-10-19 18:35
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure ieee80211_tx_prepare_skb() has three error paths, but only two of them free the skb. The first error path (ieee80211_tx_prepare() returning TX_DROP) does not free it, while invoke_tx_handlers() failure and the fragmentation check both do. Add kfree_skb() to the first error path so all three are consistent, and remove the now-redundant frees in callers (ath9k, mt76, mac80211_hwsim) to avoid double-free. Document the skb ownership guarantee in the function's kdoc.
References
Impacted products
Vendor Product Version
Linux Linux Version: 06be6b149f7e406bcf16098567f5a6c9f042bced
Version: 06be6b149f7e406bcf16098567f5a6c9f042bced
Version: 06be6b149f7e406bcf16098567f5a6c9f042bced
Version: 06be6b149f7e406bcf16098567f5a6c9f042bced
Version: 06be6b149f7e406bcf16098567f5a6c9f042bced
Version: 06be6b149f7e406bcf16098567f5a6c9f042bced
Version: 06be6b149f7e406bcf16098567f5a6c9f042bced
Version: 06be6b149f7e406bcf16098567f5a6c9f042bced
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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