{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "804627751b4281dd95148e7564759145da67855e"
            },
            {
              "fixed": "aaebce297efc3e3dccb98a6ff838cfaa47db08db"
            },
            {
              "fixed": "60d7d3559ce66e227e195e9463cdfed8077c8659"
            },
            {
              "fixed": "214fb79b0379cb0214905632a2537c0c33f594eb"
            },
            {
              "fixed": "8341bd3ff126d85bc8c4ed52eedcaa5b1a65f194"
            },
            {
              "fixed": "e37b2abca80473e106176e41712a369fd2f72117"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "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-2026-90115.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: fix NULL pointer dereference in __xsk_rcv()\n\nIn the __xsk_rcv() multi-buffer path, xsk_buff_alloc() is called in a\nloop without checking its return value. xsk_buff_can_alloc() only\ncounts fill queue entries without validating their addresses, so it\ncan succeed while xsk_buff_alloc() rejects all remaining entries and\nreturns NULL.\n\n  Oops: general protection fault, probably for non-canonical address\n   0xdffffc0000000000\n  KASAN: null-ptr-deref in range\n   [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:__xsk_rcv+0x426/0xc20 (net/xdp/xsk.c:350)\n  Call Trace:\n   xsk_generic_rcv+0x26d/0x5f0\n   xdp_do_generic_redirect+0x3c5/0xcf0\n   do_xdp_generic+0x92f/0xe70\n   __netif_receive_skb_core.constprop.0+0xf7e/0x2b30\n\nFix this with a two-stage transaction. First allocate and stage all\nbuffers required for the packet, recycling all staged buffers with\nxsk_buff_free() if any allocation fails. Only after this stage\nsucceeds, copy the data, reserve the RX descriptors, and release the\nbuffers in an error-free loop.",
  "id": "CVE-2026-90115",
  "modified": "2026-09-19T03:30:40.580128182Z",
  "published": "2026-09-17T16:06:21.376Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/214fb79b0379cb0214905632a2537c0c33f594eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60d7d3559ce66e227e195e9463cdfed8077c8659"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8341bd3ff126d85bc8c4ed52eedcaa5b1a65f194"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aaebce297efc3e3dccb98a6ff838cfaa47db08db"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e37b2abca80473e106176e41712a369fd2f72117"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90115.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90115"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "xsk: fix NULL pointer dereference in __xsk_rcv()"
}