{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c83fa19603bdaeef17b815713dbbe3230c8a34ee"
            },
            {
              "fixed": "f4461654374576e9d5d0245fd534c46ad8509051"
            },
            {
              "fixed": "dc20050b6b12ca58066715d088e1a537535d938d"
            },
            {
              "fixed": "33d1469b0124cc0baaea7a2032123b77a81e0940"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.12.0"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93288.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state\n\nsashiko reports: \"nfnl_log_net_exit() calls nf_log_unset(), which\nclears the logger pointer without an RCU grace period.  Immediately after,\nops_free_list() frees the per-net state while concurrent packets might\nstill be executing nf_log_packet() under rcu_read_lock().\"\n\nClear the pointer via .pre_exit to make sure rcu readers have completed\nbefore pernet storage is free'd.  The change in nf_log_syslog.c is only\ndone for consistency: it doesn't use pernet data.",
  "id": "CVE-2026-93288",
  "modified": "2026-09-27T03:30:24.507520183Z",
  "published": "2026-09-24T16:02:12.144Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33d1469b0124cc0baaea7a2032123b77a81e0940"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc20050b6b12ca58066715d088e1a537535d938d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4461654374576e9d5d0245fd534c46ad8509051"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93288.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93288"
    },
    {
      "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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state"
}