CVE-2025-21801 (GCVE-0-2025-21801)

Vulnerability from cvelistv5 – Published: 2025-02-27 20:00 – Updated: 2026-05-11 21:06
VLAI
Title
net: ravb: Fix missing rtnl lock in suspend/resume path
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ravb: Fix missing rtnl lock in suspend/resume path Fix the suspend/resume path by ensuring the rtnl lock is held where required. Calls to ravb_open, ravb_close and wol operations must be performed under the rtnl lock to prevent conflicts with ongoing ndo operations. Without this fix, the following warning is triggered: [ 39.032969] ============================= [ 39.032983] WARNING: suspicious RCU usage [ 39.033019] ----------------------------- [ 39.033033] drivers/net/phy/phy_device.c:2004 suspicious rcu_dereference_protected() usage! ... [ 39.033597] stack backtrace: [ 39.033613] CPU: 0 UID: 0 PID: 174 Comm: python3 Not tainted 6.13.0-rc7-next-20250116-arm64-renesas-00002-g35245dfdc62c #7 [ 39.033623] Hardware name: Renesas SMARC EVK version 2 based on r9a08g045s33 (DT) [ 39.033628] Call trace: [ 39.033633] show_stack+0x14/0x1c (C) [ 39.033652] dump_stack_lvl+0xb4/0xc4 [ 39.033664] dump_stack+0x14/0x1c [ 39.033671] lockdep_rcu_suspicious+0x16c/0x22c [ 39.033682] phy_detach+0x160/0x190 [ 39.033694] phy_disconnect+0x40/0x54 [ 39.033703] ravb_close+0x6c/0x1cc [ 39.033714] ravb_suspend+0x48/0x120 [ 39.033721] dpm_run_callback+0x4c/0x14c [ 39.033731] device_suspend+0x11c/0x4dc [ 39.033740] dpm_suspend+0xdc/0x214 [ 39.033748] dpm_suspend_start+0x48/0x60 [ 39.033758] suspend_devices_and_enter+0x124/0x574 [ 39.033769] pm_suspend+0x1ac/0x274 [ 39.033778] state_store+0x88/0x124 [ 39.033788] kobj_attr_store+0x14/0x24 [ 39.033798] sysfs_kf_write+0x48/0x6c [ 39.033808] kernfs_fop_write_iter+0x118/0x1a8 [ 39.033817] vfs_write+0x27c/0x378 [ 39.033825] ksys_write+0x64/0xf4 [ 39.033833] __arm64_sys_write+0x18/0x20 [ 39.033841] invoke_syscall+0x44/0x104 [ 39.033852] el0_svc_common.constprop.0+0xb4/0xd4 [ 39.033862] do_el0_svc+0x18/0x20 [ 39.033870] el0_svc+0x3c/0xf0 [ 39.033880] el0t_64_sync_handler+0xc0/0xc4 [ 39.033888] el0t_64_sync+0x154/0x158 [ 39.041274] ravb 11c30000.ethernet eth0: Link is Down
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0184165b2f42c4b032da9dd11546bfbaeb5afd4e , < 0296981941cf291edfbc318d3255a93439f368e4 (git)
Affected: 0184165b2f42c4b032da9dd11546bfbaeb5afd4e , < ad19522c007bb24ed874468f8baa1503c4662cf4 (git)
Affected: 0184165b2f42c4b032da9dd11546bfbaeb5afd4e , < 2c2ebb2b49573e5f8726112ad06b1dffc3c9ea03 (git)
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Linux Linux Affected: 4.9
Unaffected: 0 , < 4.9 (semver)
Unaffected: 6.12.13 , ≤ 6.12.* (semver)
Unaffected: 6.13.2 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/renesas/ravb_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0296981941cf291edfbc318d3255a93439f368e4",
              "status": "affected",
              "version": "0184165b2f42c4b032da9dd11546bfbaeb5afd4e",
              "versionType": "git"
            },
            {
              "lessThan": "ad19522c007bb24ed874468f8baa1503c4662cf4",
              "status": "affected",
              "version": "0184165b2f42c4b032da9dd11546bfbaeb5afd4e",
              "versionType": "git"
            },
            {
              "lessThan": "2c2ebb2b49573e5f8726112ad06b1dffc3c9ea03",
              "status": "affected",
              "version": "0184165b2f42c4b032da9dd11546bfbaeb5afd4e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/renesas/ravb_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.9"
            },
            {
              "lessThan": "4.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.13",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.2",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ravb: Fix missing rtnl lock in suspend/resume path\n\nFix the suspend/resume path by ensuring the rtnl lock is held where\nrequired. Calls to ravb_open, ravb_close and wol operations must be\nperformed under the rtnl lock to prevent conflicts with ongoing ndo\noperations.\n\nWithout this fix, the following warning is triggered:\n[   39.032969] =============================\n[   39.032983] WARNING: suspicious RCU usage\n[   39.033019] -----------------------------\n[   39.033033] drivers/net/phy/phy_device.c:2004 suspicious\nrcu_dereference_protected() usage!\n...\n[   39.033597] stack backtrace:\n[   39.033613] CPU: 0 UID: 0 PID: 174 Comm: python3 Not tainted\n6.13.0-rc7-next-20250116-arm64-renesas-00002-g35245dfdc62c #7\n[   39.033623] Hardware name: Renesas SMARC EVK version 2 based on\nr9a08g045s33 (DT)\n[   39.033628] Call trace:\n[   39.033633]  show_stack+0x14/0x1c (C)\n[   39.033652]  dump_stack_lvl+0xb4/0xc4\n[   39.033664]  dump_stack+0x14/0x1c\n[   39.033671]  lockdep_rcu_suspicious+0x16c/0x22c\n[   39.033682]  phy_detach+0x160/0x190\n[   39.033694]  phy_disconnect+0x40/0x54\n[   39.033703]  ravb_close+0x6c/0x1cc\n[   39.033714]  ravb_suspend+0x48/0x120\n[   39.033721]  dpm_run_callback+0x4c/0x14c\n[   39.033731]  device_suspend+0x11c/0x4dc\n[   39.033740]  dpm_suspend+0xdc/0x214\n[   39.033748]  dpm_suspend_start+0x48/0x60\n[   39.033758]  suspend_devices_and_enter+0x124/0x574\n[   39.033769]  pm_suspend+0x1ac/0x274\n[   39.033778]  state_store+0x88/0x124\n[   39.033788]  kobj_attr_store+0x14/0x24\n[   39.033798]  sysfs_kf_write+0x48/0x6c\n[   39.033808]  kernfs_fop_write_iter+0x118/0x1a8\n[   39.033817]  vfs_write+0x27c/0x378\n[   39.033825]  ksys_write+0x64/0xf4\n[   39.033833]  __arm64_sys_write+0x18/0x20\n[   39.033841]  invoke_syscall+0x44/0x104\n[   39.033852]  el0_svc_common.constprop.0+0xb4/0xd4\n[   39.033862]  do_el0_svc+0x18/0x20\n[   39.033870]  el0_svc+0x3c/0xf0\n[   39.033880]  el0t_64_sync_handler+0xc0/0xc4\n[   39.033888]  el0t_64_sync+0x154/0x158\n[   39.041274] ravb 11c30000.ethernet eth0: Link is Down"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:06:45.869Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0296981941cf291edfbc318d3255a93439f368e4"
        },
        {
          "url": "https://git.kernel.org/stable/c/ad19522c007bb24ed874468f8baa1503c4662cf4"
        },
        {
          "url": "https://git.kernel.org/stable/c/2c2ebb2b49573e5f8726112ad06b1dffc3c9ea03"
        }
      ],
      "title": "net: ravb: Fix missing rtnl lock in suspend/resume path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21801",
    "datePublished": "2025-02-27T20:00:55.572Z",
    "dateReserved": "2024-12-29T08:45:45.770Z",
    "dateUpdated": "2026-05-11T21:06:45.869Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-21801",
      "date": "2026-05-29",
      "epss": "0.00053",
      "percentile": "0.16892"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21801\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-27T20:16:02.753\",\"lastModified\":\"2025-10-30T21:35:12.517\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: ravb: Fix missing rtnl lock in suspend/resume path\\n\\nFix the suspend/resume path by ensuring the rtnl lock is held where\\nrequired. Calls to ravb_open, ravb_close and wol operations must be\\nperformed under the rtnl lock to prevent conflicts with ongoing ndo\\noperations.\\n\\nWithout this fix, the following warning is triggered:\\n[   39.032969] =============================\\n[   39.032983] WARNING: suspicious RCU usage\\n[   39.033019] -----------------------------\\n[   39.033033] drivers/net/phy/phy_device.c:2004 suspicious\\nrcu_dereference_protected() usage!\\n...\\n[   39.033597] stack backtrace:\\n[   39.033613] CPU: 0 UID: 0 PID: 174 Comm: python3 Not tainted\\n6.13.0-rc7-next-20250116-arm64-renesas-00002-g35245dfdc62c #7\\n[   39.033623] Hardware name: Renesas SMARC EVK version 2 based on\\nr9a08g045s33 (DT)\\n[   39.033628] Call trace:\\n[   39.033633]  show_stack+0x14/0x1c (C)\\n[   39.033652]  dump_stack_lvl+0xb4/0xc4\\n[   39.033664]  dump_stack+0x14/0x1c\\n[   39.033671]  lockdep_rcu_suspicious+0x16c/0x22c\\n[   39.033682]  phy_detach+0x160/0x190\\n[   39.033694]  phy_disconnect+0x40/0x54\\n[   39.033703]  ravb_close+0x6c/0x1cc\\n[   39.033714]  ravb_suspend+0x48/0x120\\n[   39.033721]  dpm_run_callback+0x4c/0x14c\\n[   39.033731]  device_suspend+0x11c/0x4dc\\n[   39.033740]  dpm_suspend+0xdc/0x214\\n[   39.033748]  dpm_suspend_start+0x48/0x60\\n[   39.033758]  suspend_devices_and_enter+0x124/0x574\\n[   39.033769]  pm_suspend+0x1ac/0x274\\n[   39.033778]  state_store+0x88/0x124\\n[   39.033788]  kobj_attr_store+0x14/0x24\\n[   39.033798]  sysfs_kf_write+0x48/0x6c\\n[   39.033808]  kernfs_fop_write_iter+0x118/0x1a8\\n[   39.033817]  vfs_write+0x27c/0x378\\n[   39.033825]  ksys_write+0x64/0xf4\\n[   39.033833]  __arm64_sys_write+0x18/0x20\\n[   39.033841]  invoke_syscall+0x44/0x104\\n[   39.033852]  el0_svc_common.constprop.0+0xb4/0xd4\\n[   39.033862]  do_el0_svc+0x18/0x20\\n[   39.033870]  el0_svc+0x3c/0xf0\\n[   39.033880]  el0t_64_sync_handler+0xc0/0xc4\\n[   39.033888]  el0t_64_sync+0x154/0x158\\n[   39.041274] ravb 11c30000.ethernet eth0: Link is Down\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: ravb: Se corrige el bloqueo rtnl faltante en la ruta de suspensi\u00f3n/reanudaci\u00f3n Corrija la ruta de suspensi\u00f3n/reanudaci\u00f3n asegur\u00e1ndose de que el bloqueo rtnl se mantenga donde sea necesario. Las llamadas a las operaciones ravb_open, ravb_close y wol se deben realizar bajo el bloqueo rtnl para evitar conflictos con las operaciones ndo en curso. Sin esta correcci\u00f3n, se activa la siguiente advertencia: [ 39.032969] ============================= [ 39.032983] ADVERTENCIA: suspicious RCU usage [ 39.033019] ----------------------------- [ 39.033033] drivers/net/phy/phy_device.c:2004 suspicious rcu_dereference_protected() usage! ... [ 39.033597] stack backtrace: [ 39.033613] CPU: 0 UID: 0 PID: 174 Comm: python3 Not tainted 6.13.0-rc7-next-20250116-arm64-renesas-00002-g35245dfdc62c #7 [ 39.033623] Hardware name: Renesas SMARC EVK version 2 based on r9a08g045s33 (DT) [ 39.033628] Call trace: [ 39.033633] show_stack+0x14/0x1c (C) [ 39.033652] dump_stack_lvl+0xb4/0xc4 [ 39.033664] dump_stack+0x14/0x1c [ 39.033671] lockdep_rcu_suspicious+0x16c/0x22c [ 39.033682] phy_detach+0x160/0x190 [ 39.033694] phy_disconnect+0x40/0x54 [ 39.033703] ravb_close+0x6c/0x1cc [ 39.033714] ravb_suspend+0x48/0x120 [ 39.033721] dpm_run_callback+0x4c/0x14c [ 39.033731] device_suspend+0x11c/0x4dc [ 39.033740] dpm_suspend+0xdc/0x214 [ 39.033748] dpm_suspend_start+0x48/0x60 [ 39.033758] suspend_devices_and_enter+0x124/0x574 [ 39.033769] pm_suspend+0x1ac/0x274 [ 39.033778] state_store+0x88/0x124 [ 39.033788] kobj_attr_store+0x14/0x24 [ 39.033798] sysfs_kf_write+0x48/0x6c [ 39.033808] kernfs_fop_write_iter+0x118/0x1a8 [ 39.033817] vfs_write+0x27c/0x378 [ 39.033825] ksys_write+0x64/0xf4 [ 39.033833] __arm64_sys_write+0x18/0x20 [ 39.033841] invoke_syscall+0x44/0x104 [ 39.033852] el0_svc_common.constprop.0+0xb4/0xd4 [ 39.033862] do_el0_svc+0x18/0x20 [ 39.033870] el0_svc+0x3c/0xf0 [ 39.033880] el0t_64_sync_handler+0xc0/0xc4 [ 39.033888] el0t_64_sync+0x154/0x158 [ 39.041274] ravb 11c30000.ethernet eth0: Link is Down \"}],\"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\":\"4.9\",\"versionEndExcluding\":\"6.12.13\",\"matchCriteriaId\":\"1F3C05B7-5F93-443D-9334-0B93D74DDA67\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.2\",\"matchCriteriaId\":\"6D4116B1-1BFD-4F23-BA84-169CC05FC5A3\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0296981941cf291edfbc318d3255a93439f368e4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2c2ebb2b49573e5f8726112ad06b1dffc3c9ea03\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ad19522c007bb24ed874468f8baa1503c4662cf4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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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

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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.