CVE-2025-40355 (GCVE-0-2025-40355)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:30 – Updated: 2026-10-21 12:37
VLAI
Title
sysfs: check visibility before changing group attribute ownership
Summary
In the Linux kernel, the following vulnerability has been resolved: sysfs: check visibility before changing group attribute ownership Since commit 0c17270f9b92 ("net: sysfs: Implement is_visible for phys_(port_id, port_name, switch_id)"), __dev_change_net_namespace() can hit WARN_ON() when trying to change owner of a file that isn't visible. See the trace below: WARNING: CPU: 6 PID: 2938 at net/core/dev.c:12410 __dev_change_net_namespace+0xb89/0xc30 CPU: 6 UID: 0 PID: 2938 Comm: incusd Not tainted 6.17.1-1-mainline #1 PREEMPT(full) 4b783b4a638669fb644857f484487d17cb45ed1f Hardware name: Framework Laptop 13 (AMD Ryzen 7040Series)/FRANMDCP07, BIOS 03.07 02/19/2025 RIP: 0010:__dev_change_net_namespace+0xb89/0xc30 [...] Call Trace: <TASK> ? if6_seq_show+0x30/0x50 do_setlink.isra.0+0xc7/0x1270 ? __nla_validate_parse+0x5c/0xcc0 ? security_capable+0x94/0x1a0 rtnl_newlink+0x858/0xc20 ? update_curr+0x8e/0x1c0 ? update_entity_lag+0x71/0x80 ? sched_balance_newidle+0x358/0x450 ? psi_task_switch+0x113/0x2a0 ? __pfx_rtnl_newlink+0x10/0x10 rtnetlink_rcv_msg+0x346/0x3e0 ? sched_clock+0x10/0x30 ? __pfx_rtnetlink_rcv_msg+0x10/0x10 netlink_rcv_skb+0x59/0x110 netlink_unicast+0x285/0x3c0 ? __alloc_skb+0xdb/0x1a0 netlink_sendmsg+0x20d/0x430 ____sys_sendmsg+0x39f/0x3d0 ? import_iovec+0x2f/0x40 ___sys_sendmsg+0x99/0xe0 __sys_sendmsg+0x8a/0xf0 do_syscall_64+0x81/0x970 ? __sys_bind+0xe3/0x110 ? syscall_exit_work+0x143/0x1b0 ? do_syscall_64+0x244/0x970 ? sock_alloc_file+0x63/0xc0 ? syscall_exit_work+0x143/0x1b0 ? do_syscall_64+0x244/0x970 ? alloc_fd+0x12e/0x190 ? put_unused_fd+0x2a/0x70 ? do_sys_openat2+0xa2/0xe0 ? syscall_exit_work+0x143/0x1b0 ? do_syscall_64+0x244/0x970 ? exc_page_fault+0x7e/0x1a0 entry_SYSCALL_64_after_hwframe+0x76/0x7e [...] </TASK> Fix this by checking is_visible() before trying to touch the attribute.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7018 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 303a42769c4c4d8e5e3ad928df87eb36f8c1fa60 , < 5e963b5aca9c1c23f7a040d555a9bc21c0ab8819 (git)
Affected: 303a42769c4c4d8e5e3ad928df87eb36f8c1fa60 , < ac2c526e103285d80a0330b91a318f6c9276d35a (git)
Affected: 303a42769c4c4d8e5e3ad928df87eb36f8c1fa60 , < c7fbb8218b4ad35fec0bd2256d2b9c8d60331f33 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 6.12.114 , ≤ 6.12.* (semver)
Unaffected: 6.17.6 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/sysfs/group.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5e963b5aca9c1c23f7a040d555a9bc21c0ab8819",
              "status": "affected",
              "version": "303a42769c4c4d8e5e3ad928df87eb36f8c1fa60",
              "versionType": "git"
            },
            {
              "lessThan": "ac2c526e103285d80a0330b91a318f6c9276d35a",
              "status": "affected",
              "version": "303a42769c4c4d8e5e3ad928df87eb36f8c1fa60",
              "versionType": "git"
            },
            {
              "lessThan": "c7fbb8218b4ad35fec0bd2256d2b9c8d60331f33",
              "status": "affected",
              "version": "303a42769c4c4d8e5e3ad928df87eb36f8c1fa60",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/sysfs/group.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.114",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.6",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsysfs: check visibility before changing group attribute ownership\n\nSince commit 0c17270f9b92 (\"net: sysfs: Implement is_visible for\nphys_(port_id, port_name, switch_id)\"), __dev_change_net_namespace() can\nhit WARN_ON() when trying to change owner of a file that isn\u0027t visible.\nSee the trace below:\n\n WARNING: CPU: 6 PID: 2938 at net/core/dev.c:12410 __dev_change_net_namespace+0xb89/0xc30\n CPU: 6 UID: 0 PID: 2938 Comm: incusd Not tainted 6.17.1-1-mainline #1 PREEMPT(full)  4b783b4a638669fb644857f484487d17cb45ed1f\n Hardware name: Framework Laptop 13 (AMD Ryzen 7040Series)/FRANMDCP07, BIOS 03.07 02/19/2025\n RIP: 0010:__dev_change_net_namespace+0xb89/0xc30\n [...]\n Call Trace:\n  \u003cTASK\u003e\n  ? if6_seq_show+0x30/0x50\n  do_setlink.isra.0+0xc7/0x1270\n  ? __nla_validate_parse+0x5c/0xcc0\n  ? security_capable+0x94/0x1a0\n  rtnl_newlink+0x858/0xc20\n  ? update_curr+0x8e/0x1c0\n  ? update_entity_lag+0x71/0x80\n  ? sched_balance_newidle+0x358/0x450\n  ? psi_task_switch+0x113/0x2a0\n  ? __pfx_rtnl_newlink+0x10/0x10\n  rtnetlink_rcv_msg+0x346/0x3e0\n  ? sched_clock+0x10/0x30\n  ? __pfx_rtnetlink_rcv_msg+0x10/0x10\n  netlink_rcv_skb+0x59/0x110\n  netlink_unicast+0x285/0x3c0\n  ? __alloc_skb+0xdb/0x1a0\n  netlink_sendmsg+0x20d/0x430\n  ____sys_sendmsg+0x39f/0x3d0\n  ? import_iovec+0x2f/0x40\n  ___sys_sendmsg+0x99/0xe0\n  __sys_sendmsg+0x8a/0xf0\n  do_syscall_64+0x81/0x970\n  ? __sys_bind+0xe3/0x110\n  ? syscall_exit_work+0x143/0x1b0\n  ? do_syscall_64+0x244/0x970\n  ? sock_alloc_file+0x63/0xc0\n  ? syscall_exit_work+0x143/0x1b0\n  ? do_syscall_64+0x244/0x970\n  ? alloc_fd+0x12e/0x190\n  ? put_unused_fd+0x2a/0x70\n  ? do_sys_openat2+0xa2/0xe0\n  ? syscall_exit_work+0x143/0x1b0\n  ? do_syscall_64+0x244/0x970\n  ? exc_page_fault+0x7e/0x1a0\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n [...]\n  \u003c/TASK\u003e\n\nFix this by checking is_visible() before trying to touch the attribute."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:37:58.178Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5e963b5aca9c1c23f7a040d555a9bc21c0ab8819"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac2c526e103285d80a0330b91a318f6c9276d35a"
        },
        {
          "url": "https://git.kernel.org/stable/c/c7fbb8218b4ad35fec0bd2256d2b9c8d60331f33"
        }
      ],
      "title": "sysfs: check visibility before changing group attribute ownership",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40355",
    "datePublished": "2025-12-16T13:30:28.017Z",
    "dateReserved": "2025-04-16T07:20:57.187Z",
    "dateUpdated": "2026-10-21T12:37:58.178Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-40355",
      "date": "2026-11-01",
      "epss": "0.00222",
      "percentile": "0.12811"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-24T02:12:25.000Z",
      "cve": "CVE-2025-40355",
      "id": "msrc_CVE-2025-40355",
      "initial_release_date": "2025-12-17T01:03:54.000Z",
      "product_status:known_affected": "17",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "sysfs: check visibility before changing group attribute ownership",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-40355.json",
      "version": "20"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "fs/sysfs/group.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "5e963b5aca9c1c23f7a040d555a9bc21c0ab8819",
                    "status": "affected",
                    "version": "303a42769c4c4d8e5e3ad928df87eb36f8c1fa60",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ac2c526e103285d80a0330b91a318f6c9276d35a",
                    "status": "affected",
                    "version": "303a42769c4c4d8e5e3ad928df87eb36f8c1fa60",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "c7fbb8218b4ad35fec0bd2256d2b9c8d60331f33",
                    "status": "affected",
                    "version": "303a42769c4c4d8e5e3ad928df87eb36f8c1fa60",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "fs/sysfs/group.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.7"
                  },
                  {
                    "lessThan": "5.7",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.114",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.17.*",
                    "status": "unaffected",
                    "version": "6.17.6",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.18",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsysfs: check visibility before changing group attribute ownership\n\nSince commit 0c17270f9b92 (\"net: sysfs: Implement is_visible for\nphys_(port_id, port_name, switch_id)\"), __dev_change_net_namespace() can\nhit WARN_ON() when trying to change owner of a file that isn\u0027t visible.\nSee the trace below:\n\n WARNING: CPU: 6 PID: 2938 at net/core/dev.c:12410 __dev_change_net_namespace+0xb89/0xc30\n CPU: 6 UID: 0 PID: 2938 Comm: incusd Not tainted 6.17.1-1-mainline #1 PREEMPT(full)  4b783b4a638669fb644857f484487d17cb45ed1f\n Hardware name: Framework Laptop 13 (AMD Ryzen 7040Series)/FRANMDCP07, BIOS 03.07 02/19/2025\n RIP: 0010:__dev_change_net_namespace+0xb89/0xc30\n [...]\n Call Trace:\n  \u003cTASK\u003e\n  ? if6_seq_show+0x30/0x50\n  do_setlink.isra.0+0xc7/0x1270\n  ? __nla_validate_parse+0x5c/0xcc0\n  ? security_capable+0x94/0x1a0\n  rtnl_newlink+0x858/0xc20\n  ? update_curr+0x8e/0x1c0\n  ? update_entity_lag+0x71/0x80\n  ? sched_balance_newidle+0x358/0x450\n  ? psi_task_switch+0x113/0x2a0\n  ? __pfx_rtnl_newlink+0x10/0x10\n  rtnetlink_rcv_msg+0x346/0x3e0\n  ? sched_clock+0x10/0x30\n  ? __pfx_rtnetlink_rcv_msg+0x10/0x10\n  netlink_rcv_skb+0x59/0x110\n  netlink_unicast+0x285/0x3c0\n  ? __alloc_skb+0xdb/0x1a0\n  netlink_sendmsg+0x20d/0x430\n  ____sys_sendmsg+0x39f/0x3d0\n  ? import_iovec+0x2f/0x40\n  ___sys_sendmsg+0x99/0xe0\n  __sys_sendmsg+0x8a/0xf0\n  do_syscall_64+0x81/0x970\n  ? __sys_bind+0xe3/0x110\n  ? syscall_exit_work+0x143/0x1b0\n  ? do_syscall_64+0x244/0x970\n  ? sock_alloc_file+0x63/0xc0\n  ? syscall_exit_work+0x143/0x1b0\n  ? do_syscall_64+0x244/0x970\n  ? alloc_fd+0x12e/0x190\n  ? put_unused_fd+0x2a/0x70\n  ? do_sys_openat2+0xa2/0xe0\n  ? syscall_exit_work+0x143/0x1b0\n  ? do_syscall_64+0x244/0x970\n  ? exc_page_fault+0x7e/0x1a0\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n [...]\n  \u003c/TASK\u003e\n\nFix this by checking is_visible() before trying to touch the attribute."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nsysfs: comprobar la visibilidad antes de cambiar la propiedad del atributo de grupo\n\nDesde el commit 0c17270f9b92 (\u0027net: sysfs: Implementar is_visible para phys_(port_id, port_name, switch_id)\u0027), __dev_change_net_namespace() puede activar WARN_ON() al intentar cambiar el propietario de un archivo que no es visible.\nVer el rastro a continuaci\u00f3n:\n\n ADVERTENCIA: CPU: 6 PID: 2938 en net/core/dev.c:12410 __dev_change_net_namespace+0xb89/0xc30\n CPU: 6 UID: 0 PID: 2938 Comm: incusd No contaminado 6.17.1-1-mainline #1 PREEMPT(full)  4b783b4a638669fb644857f484487d17cb45ed1f\n Nombre del hardware: Framework Laptop 13 (AMD Ryzen 7040Series)/FRANMDCP07, BIOS 03.07 02/19/2025\n RIP: 0010:__dev_change_net_namespace+0xb89/0xc30\n [...]\n Rastro de la llamada:\n  \u003cTAREA\u003e\n  ? if6_seq_show+0x30/0x50\n  do_setlink.isra.0+0xc7/0x1270\n  ? __nla_validate_parse+0x5c/0xcc0\n  ? security_capable+0x94/0x1a0\n  rtnl_newlink+0x858/0xc20\n  ? update_curr+0x8e/0x1c0\n  ? update_entity_lag+0x71/0x80\n  ? sched_balance_newidle+0x358/0x450\n  ? psi_task_switch+0x113/0x2a0\n  ? __pfx_rtnl_newlink+0x10/0x10\n  rtnetlink_rcv_msg+0x346/0x3e0\n  ? sched_clock+0x10/0x30\n  ? __pfx_rtnetlink_rcv_msg+0x10/0x10\n  netlink_rcv_skb+0x59/0x110\n  netlink_unicast+0x285/0x3c0\n  ? __alloc_skb+0xdb/0x1a0\n  netlink_sendmsg+0x20d/0x430\n  ____sys_sendmsg+0x39f/0x3d0\n  ? import_iovec+0x2f/0x40\n  ___sys_sendmsg+0x99/0xe0\n  __sys_sendmsg+0x8a/0xf0\n  do_syscall_64+0x81/0x970\n  ? __sys_bind+0xe3/0x110\n  ? syscall_exit_work+0x143/0x1b0\n  ? do_syscall_64+0x244/0x970\n  ? sock_alloc_file+0x63/0xc0\n  ? syscall_exit_work+0x143/0x1b0\n  ? do_syscall_64+0x244/0x970\n  ? alloc_fd+0x12e/0x190\n  ? put_unused_fd+0x2a/0x70\n  ? do_sys_openat2+0xa2/0xe0\n  ? syscall_exit_work+0x143/0x1b0\n  ? do_syscall_64+0x244/0x970\n  ? exc_page_fault+0x7e/0x1a0\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n [...]\n  \u003c/TAREA\u003e\n\nSolucione esto comprobando is_visible() antes de intentar tocar el atributo."
          }
        ],
        "id": "CVE-2025-40355",
        "lastModified": "2026-10-21T13:18:20.410",
        "metrics": {},
        "published": "2025-12-16T14:15:47.423",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/5e963b5aca9c1c23f7a040d555a9bc21c0ab8819"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ac2c526e103285d80a0330b91a318f6c9276d35a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c7fbb8218b4ad35fec0bd2256d2b9c8d60331f33"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T02:59:53+00:00",
      "cve": "CVE-2025-40355",
      "id": "CVE-2025-40355",
      "initial_release_date": "2025-12-16T00:00:00+00:00",
      "product_status:known_affected": "246",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: sysfs: check visibility before changing group attribute ownership",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40355.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.