{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-40355",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.187Z",
        "datePublished": "2025-12-16T13:30:28.017Z",
        "dateUpdated": "2026-05-11T21:47:46.047Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:47:46.047Z"
            },
            "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't 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  <TASK>\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  </TASK>\n\nFix this by checking is_visible() before trying to touch the attribute."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/sysfs/group.c"
                    ],
                    "versions": [
                        {
                            "version": "303a42769c4c4d8e5e3ad928df87eb36f8c1fa60",
                            "lessThan": "ac2c526e103285d80a0330b91a318f6c9276d35a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "303a42769c4c4d8e5e3ad928df87eb36f8c1fa60",
                            "lessThan": "c7fbb8218b4ad35fec0bd2256d2b9c8d60331f33",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/sysfs/group.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.6",
                            "lessThanOrEqual": "6.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.17.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "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"
            }
        }
    }
}