{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/linux/srcutiny.h",
            "kernel/rcu/srcutiny.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "28768bc7ea0b13f558a70f63cc3cfcd32d55d488",
              "status": "affected",
              "version": "d8be81735aa89413b333de488251f0e64e2be591",
              "versionType": "git"
            },
            {
              "lessThan": "bb37286db65368cb72ba8757ad86299c4e4a73fc",
              "status": "affected",
              "version": "d8be81735aa89413b333de488251f0e64e2be591",
              "versionType": "git"
            },
            {
              "lessThan": "a6fc88b22bc8d12ad52e8412c667ec0f5bf055af",
              "status": "affected",
              "version": "d8be81735aa89413b333de488251f0e64e2be591",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/linux/srcutiny.h",
            "kernel/rcu/srcutiny.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            },
            {
              "lessThan": "4.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.57",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.14",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsrcu: Use irq_work to start GP in tiny SRCU\n\nTiny SRCU\u0027s srcu_gp_start_if_needed() directly calls schedule_work(),\nwhich acquires the workqueue pool-\u003elock.\n\nThis causes a lockdep splat when call_srcu() is called with a scheduler\nlock held, due to:\n\n  call_srcu() [holding pi_lock]\n    srcu_gp_start_if_needed()\n      schedule_work() -\u003e pool-\u003elock\n\n  workqueue_init() / create_worker() [holding pool-\u003elock]\n    wake_up_process() -\u003e try_to_wake_up() -\u003e pi_lock\n\nAlso add irq_work_sync() to cleanup_srcu_struct() to prevent a\nuse-after-free if a queued irq_work fires after cleanup begins.\n\nTested with rcutorture SRCU-T and no lockdep warnings.\n\n[ Thanks to Boqun for similar fix in patch \"rcu: Use an intermediate irq_work\nto start process_srcu()\" ]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:24:58.376Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/28768bc7ea0b13f558a70f63cc3cfcd32d55d488"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb37286db65368cb72ba8757ad86299c4e4a73fc"
        },
        {
          "url": "https://git.kernel.org/stable/c/a6fc88b22bc8d12ad52e8412c667ec0f5bf055af"
        }
      ],
      "title": "srcu: Use irq_work to start GP in tiny SRCU",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43115",
    "datePublished": "2026-05-06T07:40:40.541Z",
    "dateReserved": "2026-05-01T14:12:55.986Z",
    "dateUpdated": "2026-10-30T12:24:58.376Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}