{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635"
            },
            {
              "fixed": "6b15fc9bc117fb6597fa1c2cc30284aafe71101c"
            },
            {
              "fixed": "373f3716a2de7adc739269ebb4d87e5bf4dc180c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.8.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90417.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()\n\nWhen the device is in the fatal error state, write_tpt_entry() returns -EIO\nbefore handing the caller's preallocated skb to the transmit path; its\nallocation-failure returns do the same. c4iw_dereg_mr() ignores the error\nand frees mhp, leaking mhp-\u003edereg_skb. c4iw_get_dma_mr() instead frees the\nskb a second time after dereg_mem() already consumed it, a double free.\n\nMake write_tpt_entry() the sole owner of a non-NULL skb, freeing it on\nevery return preceding handoff to c4iw_ofld_send(): fatal error, tpt and\nstag allocation failure. c4iw_ofld_send() consumes the skb on success and\nerror alike, so drop the redundant kfree_skb() in c4iw_get_dma_mr() after\ndereg_mem().",
  "id": "CVE-2026-90417",
  "modified": "2026-09-19T03:30:16.173869819Z",
  "published": "2026-09-17T16:09:42.342Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/373f3716a2de7adc739269ebb4d87e5bf4dc180c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6b15fc9bc117fb6597fa1c2cc30284aafe71101c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90417.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90417"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()"
}