{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "db1312dd95488b5e6ff362ff66fcf953a46b1821"
            },
            {
              "fixed": "9d61131acd742cf97ee64e453383e41b46568513"
            },
            {
              "fixed": "7fd3c363eba4f2aceb4b3f31cd1cf65e0dcbaee4"
            },
            {
              "fixed": "8a9b4c0eef19c207663c1ee888257307c869ca86"
            },
            {
              "fixed": "fa6778e030bed9841ddcdf96bc7018da9ac03562"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.56"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98725.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()\n\nnvmet_auth_challenge() receives its output buffer as a void pointer.\nsizeof(*d) therefore evaluates to one with GCC and undercounts the fixed\nchallenge header by 15 bytes.  A short AUTH_RECEIVE buffer can pass the\ncheck before the challenge is copied past the end of its allocation.\n\nUse the typed challenge pointer when calculating the response size.\n\n  BUG: KASAN: slab-out-of-bounds in nvmet_execute_auth_receive (drivers/nvme/target/fabrics-cmd-auth.c:442 drivers/nvme/target/fabrics-cmd-auth.c:569)\n  Write of size 32 by task kworker/1:1H/64\n  Workqueue: nvmet_tcp_wq nvmet_tcp_io_work\n  Call Trace:\n  nvmet_execute_auth_receive (drivers/nvme/target/fabrics-cmd-auth.c:442 drivers/nvme/target/fabrics-cmd-auth.c:569)\n  nvmet_tcp_try_recv_pdu (drivers/nvme/target/tcp.c:1119 drivers/nvme/target/tcp.c:1243)\n  nvmet_tcp_io_work (drivers/nvme/target/tcp.c:1350 drivers/nvme/target/tcp.c:1382 drivers/nvme/target/tcp.c:1445)\n  process_one_work (kernel/workqueue.c:3322)\n  worker_thread (kernel/workqueue.c:3405 kernel/workqueue.c:3486)\n  kthread (kernel/kthread.c:436)\n  ret_from_fork (arch/x86/kernel/process.c:158)\n  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n  The buggy address is located 16 bytes inside of\n   allocated 33-byte region [ffff888000554e80, ffff888000554ea1)\n  Kernel panic - not syncing: KASAN: panic_on_warn set ...",
  "id": "CVE-2026-98725",
  "modified": "2026-10-19T02:30:51.978748604Z",
  "published": "2026-10-18T15:47:02.735Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7fd3c363eba4f2aceb4b3f31cd1cf65e0dcbaee4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a9b4c0eef19c207663c1ee888257307c869ca86"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d61131acd742cf97ee64e453383e41b46568513"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa6778e030bed9841ddcdf96bc7018da9ac03562"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98725.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98725"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()"
}