CVE-2022-49383 (GCVE-0-2022-49383)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:11 – Updated: 2026-05-11 18:58
VLAI
Title
watchdog: rzg2l_wdt: Fix 'BUG: Invalid wait context'
Summary
In the Linux kernel, the following vulnerability has been resolved: watchdog: rzg2l_wdt: Fix 'BUG: Invalid wait context' This patch fixes the issue 'BUG: Invalid wait context' during restart() callback by using clk_prepare_enable() instead of pm_runtime_get_sync() for turning on the clocks during restart. This issue is noticed when testing with renesas_defconfig. [ 42.213802] reboot: Restarting system [ 42.217860] [ 42.219364] ============================= [ 42.223368] [ BUG: Invalid wait context ] [ 42.227372] 5.17.0-rc5-arm64-renesas-00002-g10393723e35e #522 Not tainted [ 42.234153] ----------------------------- [ 42.238155] systemd-shutdow/1 is trying to lock: [ 42.242766] ffff00000a650828 (&genpd->mlock){+.+.}-{3:3}, at: genpd_lock_mtx+0x14/0x20 [ 42.250709] other info that might help us debug this: [ 42.255753] context-{4:4} [ 42.258368] 2 locks held by systemd-shutdow/1: [ 42.262806] #0: ffff80000944e1c8 (system_transition_mutex#2){+.+.}-{3:3}, at: __do_sys_reboot+0xd0/0x250 [ 42.272388] #1: ffff8000094c4e40 (rcu_read_lock){....}-{1:2}, at: atomic_notifier_call_chain+0x0/0x150 [ 42.281795] stack backtrace: [ 42.284672] CPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 5.17.0-rc5-arm64-renesas-00002-g10393723e35e #522 [ 42.294577] Hardware name: Renesas SMARC EVK based on r9a07g044c2 (DT) [ 42.301096] Call trace: [ 42.303538] dump_backtrace+0xcc/0xd8 [ 42.307203] show_stack+0x14/0x30 [ 42.310517] dump_stack_lvl+0x88/0xb0 [ 42.314180] dump_stack+0x14/0x2c [ 42.317492] __lock_acquire+0x1b24/0x1b50 [ 42.321502] lock_acquire+0x120/0x3a8 [ 42.325162] __mutex_lock+0x84/0x8f8 [ 42.328737] mutex_lock_nested+0x30/0x58 [ 42.332658] genpd_lock_mtx+0x14/0x20 [ 42.336319] genpd_runtime_resume+0xc4/0x228 [ 42.340587] __rpm_callback+0x44/0x170 [ 42.344337] rpm_callback+0x64/0x70 [ 42.347824] rpm_resume+0x4e0/0x6b8 [ 42.351310] __pm_runtime_resume+0x50/0x78 [ 42.355404] rzg2l_wdt_restart+0x28/0x68 [ 42.359329] watchdog_restart_notifier+0x1c/0x30 [ 42.363943] atomic_notifier_call_chain+0x94/0x150 [ 42.368732] do_kernel_restart+0x24/0x30 [ 42.372652] machine_restart+0x44/0x70 [ 42.376399] kernel_restart+0x3c/0x60 [ 42.380058] __do_sys_reboot+0x228/0x250 [ 42.383977] __arm64_sys_reboot+0x20/0x28 [ 42.387983] invoke_syscall+0x40/0xf8
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2cbc5cd0b55fa2310cc557c77b0665f5e00272de , < 6505541e5298cea2b79da68ee626f583f8e18784 (git)
Affected: 2cbc5cd0b55fa2310cc557c77b0665f5e00272de , < 0a635239cd5484d8f2e702713ccc49ec82aa7594 (git)
Affected: 2cbc5cd0b55fa2310cc557c77b0665f5e00272de , < e4cf89596c1f1e33309556699f910ced4abbaf44 (git)
Create a notification for this product.
Linux Linux Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 5.17.15 , ≤ 5.17.* (semver)
Unaffected: 5.18.4 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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{
  "containers": {
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      "affected": [
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          "product": "Linux",
          "programFiles": [
            "drivers/watchdog/rzg2l_wdt.c"
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              "versionType": "git"
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
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              "status": "unaffected",
              "version": "0",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "nodes": [
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: rzg2l_wdt: Fix \u0027BUG: Invalid wait context\u0027\n\nThis patch fixes the issue \u0027BUG: Invalid wait context\u0027 during restart()\ncallback by using clk_prepare_enable() instead of pm_runtime_get_sync()\nfor turning on the clocks during restart.\n\nThis issue is noticed when testing with renesas_defconfig.\n\n[   42.213802] reboot: Restarting system\n[   42.217860]\n[   42.219364] =============================\n[   42.223368] [ BUG: Invalid wait context ]\n[   42.227372] 5.17.0-rc5-arm64-renesas-00002-g10393723e35e #522 Not tainted\n[   42.234153] -----------------------------\n[   42.238155] systemd-shutdow/1 is trying to lock:\n[   42.242766] ffff00000a650828 (\u0026genpd-\u003emlock){+.+.}-{3:3}, at: genpd_lock_mtx+0x14/0x20\n[   42.250709] other info that might help us debug this:\n[   42.255753] context-{4:4}\n[   42.258368] 2 locks held by systemd-shutdow/1:\n[   42.262806]  #0: ffff80000944e1c8 (system_transition_mutex#2){+.+.}-{3:3}, at: __do_sys_reboot+0xd0/0x250\n[   42.272388]  #1: ffff8000094c4e40 (rcu_read_lock){....}-{1:2}, at: atomic_notifier_call_chain+0x0/0x150\n[   42.281795] stack backtrace:\n[   42.284672] CPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 5.17.0-rc5-arm64-renesas-00002-g10393723e35e #522\n[   42.294577] Hardware name: Renesas SMARC EVK based on r9a07g044c2 (DT)\n[   42.301096] Call trace:\n[   42.303538]  dump_backtrace+0xcc/0xd8\n[   42.307203]  show_stack+0x14/0x30\n[   42.310517]  dump_stack_lvl+0x88/0xb0\n[   42.314180]  dump_stack+0x14/0x2c\n[   42.317492]  __lock_acquire+0x1b24/0x1b50\n[   42.321502]  lock_acquire+0x120/0x3a8\n[   42.325162]  __mutex_lock+0x84/0x8f8\n[   42.328737]  mutex_lock_nested+0x30/0x58\n[   42.332658]  genpd_lock_mtx+0x14/0x20\n[   42.336319]  genpd_runtime_resume+0xc4/0x228\n[   42.340587]  __rpm_callback+0x44/0x170\n[   42.344337]  rpm_callback+0x64/0x70\n[   42.347824]  rpm_resume+0x4e0/0x6b8\n[   42.351310]  __pm_runtime_resume+0x50/0x78\n[   42.355404]  rzg2l_wdt_restart+0x28/0x68\n[   42.359329]  watchdog_restart_notifier+0x1c/0x30\n[   42.363943]  atomic_notifier_call_chain+0x94/0x150\n[   42.368732]  do_kernel_restart+0x24/0x30\n[   42.372652]  machine_restart+0x44/0x70\n[   42.376399]  kernel_restart+0x3c/0x60\n[   42.380058]  __do_sys_reboot+0x228/0x250\n[   42.383977]  __arm64_sys_reboot+0x20/0x28\n[   42.387983]  invoke_syscall+0x40/0xf8"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T18:58:37.994Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6505541e5298cea2b79da68ee626f583f8e18784"
        },
        {
          "url": "https://git.kernel.org/stable/c/0a635239cd5484d8f2e702713ccc49ec82aa7594"
        },
        {
          "url": "https://git.kernel.org/stable/c/e4cf89596c1f1e33309556699f910ced4abbaf44"
        }
      ],
      "title": "watchdog: rzg2l_wdt: Fix \u0027BUG: Invalid wait context\u0027",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49383",
    "datePublished": "2025-02-26T02:11:19.768Z",
    "dateReserved": "2025-02-26T02:08:31.559Z",
    "dateUpdated": "2026-05-11T18:58:37.994Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49383",
      "date": "2026-07-25",
      "epss": "0.00253",
      "percentile": "0.16866"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49383\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:14.917\",\"lastModified\":\"2026-06-17T05:17:53.570\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwatchdog: rzg2l_wdt: Fix \u0027BUG: Invalid wait context\u0027\\n\\nThis patch fixes the issue \u0027BUG: Invalid wait context\u0027 during restart()\\ncallback by using clk_prepare_enable() instead of pm_runtime_get_sync()\\nfor turning on the clocks during restart.\\n\\nThis issue is noticed when testing with renesas_defconfig.\\n\\n[   42.213802] reboot: Restarting system\\n[   42.217860]\\n[   42.219364] =============================\\n[   42.223368] [ BUG: Invalid wait context ]\\n[   42.227372] 5.17.0-rc5-arm64-renesas-00002-g10393723e35e #522 Not tainted\\n[   42.234153] -----------------------------\\n[   42.238155] systemd-shutdow/1 is trying to lock:\\n[   42.242766] ffff00000a650828 (\u0026genpd-\u003emlock){+.+.}-{3:3}, at: genpd_lock_mtx+0x14/0x20\\n[   42.250709] other info that might help us debug this:\\n[   42.255753] context-{4:4}\\n[   42.258368] 2 locks held by systemd-shutdow/1:\\n[   42.262806]  #0: ffff80000944e1c8 (system_transition_mutex#2){+.+.}-{3:3}, at: __do_sys_reboot+0xd0/0x250\\n[   42.272388]  #1: ffff8000094c4e40 (rcu_read_lock){....}-{1:2}, at: atomic_notifier_call_chain+0x0/0x150\\n[   42.281795] stack backtrace:\\n[   42.284672] CPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 5.17.0-rc5-arm64-renesas-00002-g10393723e35e #522\\n[   42.294577] Hardware name: Renesas SMARC EVK based on r9a07g044c2 (DT)\\n[   42.301096] Call trace:\\n[   42.303538]  dump_backtrace+0xcc/0xd8\\n[   42.307203]  show_stack+0x14/0x30\\n[   42.310517]  dump_stack_lvl+0x88/0xb0\\n[   42.314180]  dump_stack+0x14/0x2c\\n[   42.317492]  __lock_acquire+0x1b24/0x1b50\\n[   42.321502]  lock_acquire+0x120/0x3a8\\n[   42.325162]  __mutex_lock+0x84/0x8f8\\n[   42.328737]  mutex_lock_nested+0x30/0x58\\n[   42.332658]  genpd_lock_mtx+0x14/0x20\\n[   42.336319]  genpd_runtime_resume+0xc4/0x228\\n[   42.340587]  __rpm_callback+0x44/0x170\\n[   42.344337]  rpm_callback+0x64/0x70\\n[   42.347824]  rpm_resume+0x4e0/0x6b8\\n[   42.351310]  __pm_runtime_resume+0x50/0x78\\n[   42.355404]  rzg2l_wdt_restart+0x28/0x68\\n[   42.359329]  watchdog_restart_notifier+0x1c/0x30\\n[   42.363943]  atomic_notifier_call_chain+0x94/0x150\\n[   42.368732]  do_kernel_restart+0x24/0x30\\n[   42.372652]  machine_restart+0x44/0x70\\n[   42.376399]  kernel_restart+0x3c/0x60\\n[   42.380058]  __do_sys_reboot+0x228/0x250\\n[   42.383977]  __arm64_sys_reboot+0x20/0x28\\n[   42.387983]  invoke_syscall+0x40/0xf8\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: watchdog: rzg2l_wdt: Fix \u0027BUG: Invalid wait context\u0027 Este parche corrige el problema \u0027BUG: Invalid wait context\u0027 durante la devoluci\u00f3n de llamada restart() al usar clk_prepare_enable() en lugar de pm_runtime_get_sync() para encender los relojes durante el reinicio. Este problema se detecta al realizar pruebas con renesas_defconfig. [ 42.213802] reiniciar: Reiniciando el sistema [ 42.217860] [ 42.219364] ============================== [ 42.223368] [ BUG: Invalid wait context ] [ 42.227372] 5.17.0-rc5-arm64-renesas-00002-g10393723e35e #522 Not tainted [ 42.234153] ----------------------------- [ 42.238155] systemd-shutdow/1 is trying to lock: [ 42.242766] ffff00000a650828 (\u0026amp;genpd-\u0026gt;mlock){+.+.}-{3:3}, at: genpd_lock_mtx+0x14/0x20 [ 42.250709] other info that might help us debug this: [ 42.255753] context-{4:4} [ 42.258368] 2 locks held by systemd-shutdow/1: [ 42.262806] #0: ffff80000944e1c8 (system_transition_mutex#2){+.+.}-{3:3}, at: __do_sys_reboot+0xd0/0x250 [ 42.272388] #1: ffff8000094c4e40 (rcu_read_lock){....}-{1:2}, at: atomic_notifier_call_chain+0x0/0x150 [ 42.281795] stack backtrace: [ 42.284672] CPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 5.17.0-rc5-arm64-renesas-00002-g10393723e35e #522 [ 42.294577] Hardware name: Renesas SMARC EVK based on r9a07g044c2 (DT) [ 42.301096] Call trace: [ 42.303538] dump_backtrace+0xcc/0xd8 [ 42.307203] show_stack+0x14/0x30 [ 42.310517] dump_stack_lvl+0x88/0xb0 [ 42.314180] dump_stack+0x14/0x2c [ 42.317492] __lock_acquire+0x1b24/0x1b50 [ 42.321502] lock_acquire+0x120/0x3a8 [ 42.325162] __mutex_lock+0x84/0x8f8 [ 42.328737] mutex_lock_nested+0x30/0x58 [ 42.332658] genpd_lock_mtx+0x14/0x20 [ 42.336319] genpd_runtime_resume+0xc4/0x228 [ 42.340587] __rpm_callback+0x44/0x170 [ 42.344337] rpm_callback+0x64/0x70 [ 42.347824] rpm_resume+0x4e0/0x6b8 [ 42.351310] __pm_runtime_resume+0x50/0x78 [ 42.355404] rzg2l_wdt_restart+0x28/0x68 [ 42.359329] watchdog_restart_notifier+0x1c/0x30 [ 42.363943] atomic_notifier_call_chain+0x94/0x150 [ 42.368732] do_kernel_restart+0x24/0x30 [ 42.372652] machine_restart+0x44/0x70 [ 42.376399] kernel_restart+0x3c/0x60 [ 42.380058] __do_sys_reboot+0x228/0x250 [ 42.383977] __arm64_sys_reboot+0x20/0x28 [ 42.387983] invoke_syscall+0x40/0xf8 \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/watchdog/rzg2l_wdt.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2cbc5cd0b55fa2310cc557c77b0665f5e00272de\",\"lessThan\":\"6505541e5298cea2b79da68ee626f583f8e18784\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2cbc5cd0b55fa2310cc557c77b0665f5e00272de\",\"lessThan\":\"0a635239cd5484d8f2e702713ccc49ec82aa7594\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2cbc5cd0b55fa2310cc557c77b0665f5e00272de\",\"lessThan\":\"e4cf89596c1f1e33309556699f910ced4abbaf44\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/watchdog/rzg2l_wdt.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.15\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18.4\",\"lessThanOrEqual\":\"5.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17\",\"versionEndExcluding\":\"5.17.15\",\"matchCriteriaId\":\"A5433C40-FA2E-4DDC-BBD9-8C7F577788FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"5.18.4\",\"matchCriteriaId\":\"FA6D643C-6D6A-4821-8A8D-B5776B8F0103\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0a635239cd5484d8f2e702713ccc49ec82aa7594\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6505541e5298cea2b79da68ee626f583f8e18784\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e4cf89596c1f1e33309556699f910ced4abbaf44\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:39:28+00:00",
      "cve": "CVE-2022-49383",
      "id": "CVE-2022-49383",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: watchdog: rzg2l_wdt: Fix \u0027BUG: Invalid wait context\u0027",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49383.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.