{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  jbd2: bound shrinker scans by examined checkpoint buffers  The jbd2 shrinker currently accounts only checkpoint buffers that it successfully releases against nr_to_scan.  Busy buffers therefore do not consume the scan budget.  If a checkpoint transaction contains mostly busy buffers, the shrinker can scan its entire checkpoint list while holding journal-\u003ej_list_lock. Large checkpoint lists can result in excessive lock hold times and leave other CPUs spinning on j_list_lock, causing soft lockups or RCU stalls.  Pass nr_to_scan into journal_shrink_one_cp_list() and decrement it for every buffer examined, including busy buffers.  Pass NULL from checkpoint cleanup paths so their existing full-list behavior is preserved.  This restores the scan-budget semantics that existed before journal_shrink_one_cp_list() was changed to always scan a complete checkpoint list.",
  "id": "DEBIAN-CVE-2026-89567",
  "modified": "2026-09-12T08:47:17.666997673Z",
  "published": "2026-09-11T20:19:40.680Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-89567"
    }
  ],
  "upstream": [
    "CVE-2026-89567"
  ]
}