CVE-2023-54246 (GCVE-0-2023-54246)
Vulnerability from cvelistv5
Published
2025-12-30 12:15
Modified
2025-12-30 12:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle() The rcuscale.holdoff module parameter can be used to delay the start of rcu_scale_writer() kthread. However, the hung-task timeout will trigger when the timeout specified by rcuscale.holdoff is greater than hung_task_timeout_secs: runqemu kvm nographic slirp qemuparams="-smp 4 -m 2048M" bootparams="rcuscale.shutdown=0 rcuscale.holdoff=300" [ 247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds. [ 247.072529] Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7 [ 247.073400] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 247.074331] task:rcu_scale_write state:D stack:30144 pid:59 ppid:2 flags:0x00004000 [ 247.075346] Call Trace: [ 247.075660] <TASK> [ 247.075965] __schedule+0x635/0x1280 [ 247.076448] ? __pfx___schedule+0x10/0x10 [ 247.076967] ? schedule_timeout+0x2dc/0x4d0 [ 247.077471] ? __pfx_lock_release+0x10/0x10 [ 247.078018] ? enqueue_timer+0xe2/0x220 [ 247.078522] schedule+0x84/0x120 [ 247.078957] schedule_timeout+0x2e1/0x4d0 [ 247.079447] ? __pfx_schedule_timeout+0x10/0x10 [ 247.080032] ? __pfx_rcu_scale_writer+0x10/0x10 [ 247.080591] ? __pfx_process_timeout+0x10/0x10 [ 247.081163] ? __pfx_sched_set_fifo_low+0x10/0x10 [ 247.081760] ? __pfx_rcu_scale_writer+0x10/0x10 [ 247.082287] rcu_scale_writer+0x6b1/0x7f0 [ 247.082773] ? mark_held_locks+0x29/0xa0 [ 247.083252] ? __pfx_rcu_scale_writer+0x10/0x10 [ 247.083865] ? __pfx_rcu_scale_writer+0x10/0x10 [ 247.084412] kthread+0x179/0x1c0 [ 247.084759] ? __pfx_kthread+0x10/0x10 [ 247.085098] ret_from_fork+0x2c/0x50 [ 247.085433] </TASK> This commit therefore replaces schedule_timeout_uninterruptible() with schedule_timeout_idle().
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/rcu/rcuscale.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "55887adc76e19aec9763186e2c1d0a3481d20e96",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "4f03fba096bfded90e0d71eba8839a46922164d1",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "83ed0cdb6ae0383dd14b02375c353773836884ed",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "9416dccb31fdb190d25d57e97674f232651f6560",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "e60c122a1614b4f65b29a7bef9d83b9fd30e937a",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/rcu/rcuscale.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.197",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.133",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.197",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.133",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.55",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()\n\nThe rcuscale.holdoff module parameter can be used to delay the start\nof rcu_scale_writer() kthread.  However, the hung-task timeout will\ntrigger when the timeout specified by rcuscale.holdoff is greater than\nhung_task_timeout_secs:\n\nrunqemu kvm nographic slirp qemuparams=\"-smp 4 -m 2048M\"\nbootparams=\"rcuscale.shutdown=0 rcuscale.holdoff=300\"\n\n[  247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds.\n[  247.072529]       Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7\n[  247.073400] \"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n[  247.074331] task:rcu_scale_write state:D stack:30144 pid:59    ppid:2      flags:0x00004000\n[  247.075346] Call Trace:\n[  247.075660]  \u003cTASK\u003e\n[  247.075965]  __schedule+0x635/0x1280\n[  247.076448]  ? __pfx___schedule+0x10/0x10\n[  247.076967]  ? schedule_timeout+0x2dc/0x4d0\n[  247.077471]  ? __pfx_lock_release+0x10/0x10\n[  247.078018]  ? enqueue_timer+0xe2/0x220\n[  247.078522]  schedule+0x84/0x120\n[  247.078957]  schedule_timeout+0x2e1/0x4d0\n[  247.079447]  ? __pfx_schedule_timeout+0x10/0x10\n[  247.080032]  ? __pfx_rcu_scale_writer+0x10/0x10\n[  247.080591]  ? __pfx_process_timeout+0x10/0x10\n[  247.081163]  ? __pfx_sched_set_fifo_low+0x10/0x10\n[  247.081760]  ? __pfx_rcu_scale_writer+0x10/0x10\n[  247.082287]  rcu_scale_writer+0x6b1/0x7f0\n[  247.082773]  ? mark_held_locks+0x29/0xa0\n[  247.083252]  ? __pfx_rcu_scale_writer+0x10/0x10\n[  247.083865]  ? __pfx_rcu_scale_writer+0x10/0x10\n[  247.084412]  kthread+0x179/0x1c0\n[  247.084759]  ? __pfx_kthread+0x10/0x10\n[  247.085098]  ret_from_fork+0x2c/0x50\n[  247.085433]  \u003c/TASK\u003e\n\nThis commit therefore replaces schedule_timeout_uninterruptible() with\nschedule_timeout_idle()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:15:44.729Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/55887adc76e19aec9763186e2c1d0a3481d20e96"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f03fba096bfded90e0d71eba8839a46922164d1"
        },
        {
          "url": "https://git.kernel.org/stable/c/83ed0cdb6ae0383dd14b02375c353773836884ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/9416dccb31fdb190d25d57e97674f232651f6560"
        },
        {
          "url": "https://git.kernel.org/stable/c/e60c122a1614b4f65b29a7bef9d83b9fd30e937a"
        }
      ],
      "title": "rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54246",
    "datePublished": "2025-12-30T12:15:44.729Z",
    "dateReserved": "2025-12-30T12:06:44.513Z",
    "dateUpdated": "2025-12-30T12:15:44.729Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54246\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:13.210\",\"lastModified\":\"2025-12-31T20:42:43.210\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nrcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()\\n\\nThe rcuscale.holdoff module parameter can be used to delay the start\\nof rcu_scale_writer() kthread.  However, the hung-task timeout will\\ntrigger when the timeout specified by rcuscale.holdoff is greater than\\nhung_task_timeout_secs:\\n\\nrunqemu kvm nographic slirp qemuparams=\\\"-smp 4 -m 2048M\\\"\\nbootparams=\\\"rcuscale.shutdown=0 rcuscale.holdoff=300\\\"\\n\\n[  247.071753] INFO: task rcu_scale_write:59 blocked for more than 122 seconds.\\n[  247.072529]       Not tainted 6.4.0-rc1-00134-gb9ed6de8d4ff #7\\n[  247.073400] \\\"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\\\" disables this message.\\n[  247.074331] task:rcu_scale_write state:D stack:30144 pid:59    ppid:2      flags:0x00004000\\n[  247.075346] Call Trace:\\n[  247.075660]  \u003cTASK\u003e\\n[  247.075965]  __schedule+0x635/0x1280\\n[  247.076448]  ? __pfx___schedule+0x10/0x10\\n[  247.076967]  ? schedule_timeout+0x2dc/0x4d0\\n[  247.077471]  ? __pfx_lock_release+0x10/0x10\\n[  247.078018]  ? enqueue_timer+0xe2/0x220\\n[  247.078522]  schedule+0x84/0x120\\n[  247.078957]  schedule_timeout+0x2e1/0x4d0\\n[  247.079447]  ? __pfx_schedule_timeout+0x10/0x10\\n[  247.080032]  ? __pfx_rcu_scale_writer+0x10/0x10\\n[  247.080591]  ? __pfx_process_timeout+0x10/0x10\\n[  247.081163]  ? __pfx_sched_set_fifo_low+0x10/0x10\\n[  247.081760]  ? __pfx_rcu_scale_writer+0x10/0x10\\n[  247.082287]  rcu_scale_writer+0x6b1/0x7f0\\n[  247.082773]  ? mark_held_locks+0x29/0xa0\\n[  247.083252]  ? __pfx_rcu_scale_writer+0x10/0x10\\n[  247.083865]  ? __pfx_rcu_scale_writer+0x10/0x10\\n[  247.084412]  kthread+0x179/0x1c0\\n[  247.084759]  ? __pfx_kthread+0x10/0x10\\n[  247.085098]  ret_from_fork+0x2c/0x50\\n[  247.085433]  \u003c/TASK\u003e\\n\\nThis commit therefore replaces schedule_timeout_uninterruptible() with\\nschedule_timeout_idle().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4f03fba096bfded90e0d71eba8839a46922164d1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/55887adc76e19aec9763186e2c1d0a3481d20e96\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/83ed0cdb6ae0383dd14b02375c353773836884ed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9416dccb31fdb190d25d57e97674f232651f6560\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e60c122a1614b4f65b29a7bef9d83b9fd30e937a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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