{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f4eecd5da3422e82e88e36c33cbd2595eebcacb1"
            },
            {
              "fixed": "68c721391b761dbe38d5b0094d2bb6e8489ad92b"
            },
            {
              "fixed": "9bfdd0f591307b5198826a0e7a5b2f35f87acd2d"
            },
            {
              "fixed": "7c4812eb96bdcafb31a65b12f2aa96659429d1d4"
            },
            {
              "fixed": "fc95ca82d5ae598c428ab5a00ae69f8526d59371"
            },
            {
              "fixed": "80b1c3d5a881f7d9081aa9f46da9742878a0f893"
            },
            {
              "fixed": "3f2387e8bfbc4efda5d77c3a11a028d0a119c48f"
            },
            {
              "fixed": "5891c03e150920618db0e9c4ea2d772abacdcfd1"
            },
            {
              "fixed": "d05c2007b3d84ccba11dc6e9cb3202768cc72f14"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.38"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "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-2026-90151.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4: remove callback IDR entry on client allocation failure\n\nnfs4_alloc_client() allocates an NFSv4.0 callback identifier before it\nfinishes setting up the client. If any later initialization step fails,\nthe error path frees the nfs_client directly with nfs_free_client(). That\nbypasses nfs_put_client(), which is where the callback IDR entry is\nremoved during normal teardown.\n\nA failed allocation can therefore leave cb_ident_idr pointing at a freed\nnfs_client. A later NFSv4.0 callback lookup by cb_ident would find the\nstale pointer and take a reference to it.\n\nMake the callback IDR removal helper callable by the allocation failure\npath, and remove the callback identifier before freeing the client.\n\nThis was found by a local static-analysis checker for publish-before-free\nlifetime bugs and confirmed by manual inspection.",
  "id": "CVE-2026-90151",
  "modified": "2026-09-19T03:30:29.970450572Z",
  "published": "2026-09-17T16:06:44.987Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f2387e8bfbc4efda5d77c3a11a028d0a119c48f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5891c03e150920618db0e9c4ea2d772abacdcfd1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68c721391b761dbe38d5b0094d2bb6e8489ad92b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c4812eb96bdcafb31a65b12f2aa96659429d1d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80b1c3d5a881f7d9081aa9f46da9742878a0f893"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9bfdd0f591307b5198826a0e7a5b2f35f87acd2d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d05c2007b3d84ccba11dc6e9cb3202768cc72f14"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc95ca82d5ae598c428ab5a00ae69f8526d59371"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90151.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90151"
    },
    {
      "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:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "NFSv4: remove callback IDR entry on client allocation failure"
}