{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "16b1c4e01c89ba07367461e0bc4cb84993c2d027"
            },
            {
              "fixed": "83a765cbd7b4d11b0b9fa1bb9d941ae911a2159b"
            },
            {
              "fixed": "1c63303659a2264bd55d9813df74cb4caeed5922"
            },
            {
              "fixed": "2be5091fa693b9119ad25a8bb8c149d236a23ade"
            },
            {
              "fixed": "58733b1dd46bb231d9d279c132a20ee46da1b664"
            },
            {
              "fixed": "4039cd807a5a46dc5f7618fffae926b8ad8455eb"
            },
            {
              "fixed": "1f428e30947395d9b9aacee03e25a4e6cfcad7a4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.17.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.152"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.104"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.45"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74678.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()\n\nWhen the interface has NETIF_F_SG enabled and skb_linearize() fails in\nax88179_tx_fixup(), the function returns NULL without freeing the skb.\n\nusbnet_start_xmit() treats a NULL return from tx_fixup() as a drop\n(info-\u003eflags does not set FLAG_MULTI_PACKET for this driver), jumping\nto the \"drop\" label where it does `if (skb) dev_kfree_skb_any(skb)`.\nBecause tx_fixup() returned NULL, the local skb variable in\nusbnet_start_xmit() is NULL, so the original skb is never freed — a\nmemory leak on every TX frame whose linearization fails (i.e. under\nmemory pressure).\n\nFree the skb before returning, matching the error handling already used\nfor the pskb_expand_head() failure path in the same function.",
  "id": "CVE-2026-74678",
  "modified": "2026-08-27T11:30:30.864778110Z",
  "published": "2026-08-22T15:32:46.765Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c63303659a2264bd55d9813df74cb4caeed5922"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f428e30947395d9b9aacee03e25a4e6cfcad7a4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2be5091fa693b9119ad25a8bb8c149d236a23ade"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4039cd807a5a46dc5f7618fffae926b8ad8455eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58733b1dd46bb231d9d279c132a20ee46da1b664"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/83a765cbd7b4d11b0b9fa1bb9d941ae911a2159b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74678.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74678"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "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": "net: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()"
}