{"id":"CVE-2025-40355","revision":"557f49b10ab74b0d881dc9ee794b8ac7","records":[{"revision":"557f49b10ab74b0d881dc9ee794b8ac7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-40355","aliases":[],"title":"sysfs: check visibility before changing group attribute ownership","description":"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.","state":0,"publishedAt":"2025-12-16T13:30:28.017+00:00","modifiedAt":"2026-10-21T12:37:58.178+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/sysfs/group.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"303a42769c4c4d8e5e3ad928df87eb36f8c1fa60\",\n                            \"lessThan\": \"5e963b5aca9c1c23f7a040d555a9bc21c0ab8819\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"303a42769c4c4d8e5e3ad928df87eb36f8c1fa60\",\n                            \"lessThan\": \"ac2c526e103285d80a0330b91a318f6c9276d35a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"303a42769c4c4d8e5e3ad928df87eb36f8c1fa60\",\n                            \"lessThan\": \"c7fbb8218b4ad35fec0bd2256d2b9c8d60331f33\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/sysfs/group.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17.6\",\n                            \"lessThanOrEqual\": \"6.17.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/5e963b5aca9c1c23f7a040d555a9bc21c0ab8819","https://git.kernel.org/stable/c/ac2c526e103285d80a0330b91a318f6c9276d35a","https://git.kernel.org/stable/c/c7fbb8218b4ad35fec0bd2256d2b9c8d60331f33"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-40355","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-40355","identifiers":["CVE-2025-40355"]},"retained":false,"historicalAffected":[]}],"coverage":[]}