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.
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            "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"
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            "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 "
          }
        ],
        "id": "CVE-2022-49383",
        "lastModified": "2026-06-17T05:17:53.570",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-02-26T07:01:14.917",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
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            "url": "https://git.kernel.org/stable/c/0a635239cd5484d8f2e702713ccc49ec82aa7594"
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/e4cf89596c1f1e33309556699f910ced4abbaf44"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "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"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-17T01:20:13Z",
      "cve": "CVE-2022-49383",
      "id": "CVE-2022-49383",
      "initial_release_date": "2025-02-27T03:07:48Z",
      "product_status:known_affected": "0",
      "product_status:known_not_affected": "462",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49383",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2025/cve-2022-49383.json",
      "version": "16"
    }
  }
}



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Tags
Taxonomy of the tags.





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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.