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        "name": "Kernel"
      },
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  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31552.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wlcore: Return -ENOMEM instead of -EAGAIN if there is not enough headroom\n\nSince upstream commit e75665dd0968 (\"wifi: wlcore: ensure skb headroom\nbefore skb_push\"), wl1271_tx_allocate() and with it\nwl1271_prepare_tx_frame() returns -EAGAIN if pskb_expand_head() fails.\nHowever, in wlcore_tx_work_locked(), a return value of -EAGAIN from\nwl1271_prepare_tx_frame() is interpreted as the aggregation buffer being\nfull. This causes the code to flush the buffer, put the skb back at the\nhead of the queue, and immediately retry the same skb in a tight while\nloop.\n\nBecause wlcore_tx_work_locked() holds wl-\u003emutex, and the retry happens\nimmediately with GFP_ATOMIC, this will result in an infinite loop and a\nCPU soft lockup. Return -ENOMEM instead so the packet is dropped and\nthe loop terminates.\n\nThe problem was found by an experimental code review agent based on\ngemini-3.1-pro while reviewing backports into v6.18.y.",
  "id": "CVE-2026-31552",
  "modified": "2026-07-15T01:48:54.936088151Z",
  "published": "2026-04-24T14:33:19.065Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/12f9eef39e49716c763714bfda835a733d5f6dea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46c670ff1ff466e5eccb3940f726586473dc053c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/980f793645540ca7a6318165cc12f49d5febeb99"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6dc74209462c4fe5a88718d2f3a5286886081c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ceb46b40b021d21911ff8608ce4ed33c1264ad2f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfa64e2b3717be1da7c4c1aff7268a009e8c1610"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/deb353d9bb009638b7762cae2d0b6e8fdbb41a69"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2c06d718a7b85cbc59ceaa2ff3f46b178ac709c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31552.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31552"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wifi: wlcore: Return -ENOMEM instead of -EAGAIN if there is not enough headroom"
}