{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.176-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.86-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.4-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  rtmutex: Use waiter::task instead of current in remove_waiter()  remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when invoked from futex_requeue().  In the latter case waiter::task is not current, but remove_waiter() operates on current for the dequeue operation. That results in several problems:    1) the rbtree dequeue happens without waiter::task::pi_lock being held    2) the waiter task's pi_blocked_on state is not cleared, which leaves a      dangling pointer primed for UAF around.    3) rt_mutex_adjust_prio_chain() operates on the wrong top priority waiter      task  Use waiter::task instead of current in all related operations in remove_waiter() to cure those problems.  [ tglx: Fixup rt_mutex_adjust_prio_chain(), add a comment and amend the   \tchangelog ]",
  "id": "DEBIAN-CVE-2026-43499",
  "modified": "2026-09-09T08:47:28.362018217Z",
  "published": "2026-05-21T13:16:19.300Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-43499"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-43499"
  ]
}