{
  "cveId": "CVE-2025-40355",
  "url": "https://patchblox.com/security/cve/CVE-2025-40355",
  "summary": "CVE-2025-40355 is fixed in 18 products on 1 platform, first by DEBIAN-CVE-2025-40355, released December 16, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "sysfs: check visibility before changing group attribute ownership",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  sysfs: check visibility before changing group attribute ownership  Since commit 0c17270f9b92 (\u0022net: sysfs: Implement is_visible for phys_(port_id, port_name, switch_id)\u0022), __dev_change_net_namespace() can hit WARN_ON() when trying to change owner of a file that isn\u0027t visible. See the trace below:   WARNING: CPU: 6 PID: 2938 at net/core/dev.c:12410 __dev_change_net_namespace\u002B0xb89/0xc30  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\u002B0xb89/0xc30  [...]  Call Trace:   \u003CTASK\u003E   ? if6_seq_show\u002B0x30/0x50   do_setlink.isra.0\u002B0xc7/0x1270   ? __nla_validate_parse\u002B0x5c/0xcc0   ? security_capable\u002B0x94/0x1a0   rtnl_newlink\u002B0x858/0xc20   ? update_curr\u002B0x8e/0x1c0   ? update_entity_lag\u002B0x71/0x80   ? sched_balance_newidle\u002B0x358/0x450   ? psi_task_switch\u002B0x113/0x2a0   ? __pfx_rtnl_newlink\u002B0x10/0x10   rtnetlink_rcv_msg\u002B0x346/0x3e0   ? sched_clock\u002B0x10/0x30   ? __pfx_rtnetlink_rcv_msg\u002B0x10/0x10   netlink_rcv_skb\u002B0x59/0x110   netlink_unicast\u002B0x285/0x3c0   ? __alloc_skb\u002B0xdb/0x1a0   netlink_sendmsg\u002B0x20d/0x430   ____sys_sendmsg\u002B0x39f/0x3d0   ? import_iovec\u002B0x2f/0x40   ___sys_sendmsg\u002B0x99/0xe0   __sys_sendmsg\u002B0x8a/0xf0   do_syscall_64\u002B0x81/0x970   ? __sys_bind\u002B0xe3/0x110   ? syscall_exit_work\u002B0x143/0x1b0   ? do_syscall_64\u002B0x244/0x970   ? sock_alloc_file\u002B0x63/0xc0   ? syscall_exit_work\u002B0x143/0x1b0   ? do_syscall_64\u002B0x244/0x970   ? alloc_fd\u002B0x12e/0x190   ? put_unused_fd\u002B0x2a/0x70   ? do_sys_openat2\u002B0xa2/0xe0   ? syscall_exit_work\u002B0x143/0x1b0   ? do_syscall_64\u002B0x244/0x970   ? exc_page_fault\u002B0x7e/0x1a0   entry_SYSCALL_64_after_hwframe\u002B0x76/0x7e  [...]   \u003C/TASK\u003E  Fix this by checking is_visible() before trying to touch the attribute.",
  "published": "2025-12-16T14:15:47Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "epss": 0.00222,
  "epssPercentile": 0.1285,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-40355",
  "fixes": [
    {
      "platform": "linux",
      "product": "dtb-aarch64",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.53.31.1",
      "fix": "SUSE-SU-2026:0447-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0447-1",
      "released": "2026-02-11T14:05:07Z"
    },
    {
      "platform": "linux",
      "product": "kernel-64kb",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "sles 15.7",
      "fixedVersion": "6.4.0-150700.20.27.1",
      "fix": "SUSE-SU-2026:0472-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0472-1",
      "released": "2026-02-12T11:26:05Z"
    },
    {
      "platform": "linux",
      "product": "kernel-azure",
      "release": "sles 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-default",
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      "fix": "OPENSUSE-SU-2026:20145-1",
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      "released": "2026-02-02T11:54:26Z"
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    {
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      "fix": "SUSE-SU-2026:0447-1",
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      "released": "2026-02-11T14:05:07Z"
    },
    {
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      "fix": "SUSE-SU-2026:20220-1",
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      "fix": "OPENSUSE-SU-2026:20145-1",
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      "fix": "SUSE-SU-2026:0447-1",
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      "released": "2026-02-11T14:05:07Z"
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    {
      "platform": "linux",
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      "release": "sles 16.0",
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      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
      "platform": "linux",
      "product": "kernel-docs",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
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    {
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      "fix": "SUSE-SU-2026:0447-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0447-1",
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    {
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      "fix": "OPENSUSE-SU-2026:20145-1",
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      "fix": "SUSE-SU-2026:20220-1",
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    {
      "platform": "linux",
      "product": "kernel-livepatch-SLE15-SP7-RT_Update_9",
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      "fix": "SUSE-SU-2026:0587-1",
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      "fix": "SUSE-SU-2026:0447-1",
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    },
    {
      "platform": "linux",
      "product": "kernel-obs-build",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
      "released": "2026-02-02T11:54:26Z"
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      "platform": "linux",
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      "fix": "SUSE-SU-2026:0447-1",
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    {
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      "release": "opensuse-leap 16.0",
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      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
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    {
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      "fix": "OPENSUSE-SU-2026:20145-1",
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      "released": "2026-02-02T11:54:26Z"
    },
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      "fix": "SUSE-SU-2026:0447-1",
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    {
      "platform": "linux",
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      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
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      "fix": "SUSE-SU-2026:0472-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0472-1",
      "released": "2026-02-12T11:26:05Z"
    },
    {
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      "fixedVersion": "6.12.0-160000.9.1",
      "fix": "OPENSUSE-SU-2026:20145-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-20145-1",
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      "fix": "SUSE-SU-2026:0447-1",
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    {
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      "fix": "SUSE-SU-2026:20220-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-20220-1",
      "released": "2026-02-02T10:12:16Z"
    },
    {
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      "fix": "DEBIAN-CVE-2025-40355",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-40355",
      "released": "2025-12-16T14:15:47Z"
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      "released": "2025-12-16T14:15:47Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}