{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9f88361273082825d9f0d13a543d49f9fa0d44a8"
            },
            {
              "fixed": "68930f8d40ab4c10ca3b019f076136758fd100a8"
            },
            {
              "fixed": "c251ed48bd9063cf7de6049421e78b6de989060f"
            },
            {
              "fixed": "798a61edbc436cacdb659927d067368eeb1e30e2"
            },
            {
              "fixed": "6e271f093d15d323f42de26f66556af53fa8e19f"
            },
            {
              "fixed": "87ce4b53b7436b50fc984f0a6afaf77f68ac5573"
            },
            {
              "fixed": "50e80e2bb5e2be8515205b9c496b9640ddefa434"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.19.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98378.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Skip unsettled links in link iterator\n\nbpf_link_prime() inserts a link into link_idr before anon_inode_getfile()\nsucceeds and before bpf_link_settle() publishes the ID in link-\u003eid.\nbpf_link_by_id() treats such an ID-zero link as unsettled, but the link\niterator takes a reference without this check.\n\nIf anon_inode_getfile() then fails, the creator removes the ID and frees\nits still-private link directly.  The iterator is left with a dangling\nreference and its next bpf_link_put() accesses freed memory.\n\nTreat ID-zero entries as transient in bpf_link_get_curr_or_next(), just as\nbpf_link_by_id() does.\n\n  BUG: KASAN: slab-use-after-free in bpf_link_put\n  Write of size 8 by task exp/384\n  Call Trace:\n  bpf_link_put                    kernel/bpf/syscall.c:3372\n  bpf_link_seq_next               kernel/bpf/link_iter.c:33\n  bpf_seq_read                    kernel/bpf/bpf_iter.c:158\n  vfs_read                        fs/read_write.c:572\n  ksys_read                       fs/read_write.c:716\n  do_syscall_64                   arch/x86/entry/syscall_64.c:84\n  entry_SYSCALL_64_after_hwframe  arch/x86/entry/entry_64.S:121\n  Kernel panic - not syncing: KASAN: panic_on_warn set ...",
  "id": "CVE-2026-98378",
  "modified": "2026-10-11T02:30:23.870496091Z",
  "published": "2026-10-09T07:34:18.626Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50e80e2bb5e2be8515205b9c496b9640ddefa434"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68930f8d40ab4c10ca3b019f076136758fd100a8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e271f093d15d323f42de26f66556af53fa8e19f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/798a61edbc436cacdb659927d067368eeb1e30e2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87ce4b53b7436b50fc984f0a6afaf77f68ac5573"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c251ed48bd9063cf7de6049421e78b6de989060f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98378.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98378"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "bpf: Skip unsettled links in link iterator"
}