GHSA-HV7W-4QC7-RW79
Vulnerability from github – Published: 2025-07-03 09:30 – Updated: 2025-11-21 00:30In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: Fix ECVF vports unload on shutdown flow
Fix shutdown flow UAF when a virtual function is created on the embedded chip (ECVF) of a BlueField device. In such case the vport acl ingress table is not properly destroyed.
ECVF functionality is independent of ecpf_vport_exists capability and thus functions mlx5_eswitch_(enable|disable)_pf_vf_vports() should not test it when enabling/disabling ECVF vports.
kernel log: [] refcount_t: underflow; use-after-free. [] WARNING: CPU: 3 PID: 1 at lib/refcount.c:28 refcount_warn_saturate+0x124/0x220
[] Call trace: [] refcount_warn_saturate+0x124/0x220 [] tree_put_node+0x164/0x1e0 [mlx5_core] [] mlx5_destroy_flow_table+0x98/0x2c0 [mlx5_core] [] esw_acl_ingress_table_destroy+0x28/0x40 [mlx5_core] [] esw_acl_ingress_lgcy_cleanup+0x80/0xf4 [mlx5_core] [] esw_legacy_vport_acl_cleanup+0x44/0x60 [mlx5_core] [] esw_vport_cleanup+0x64/0x90 [mlx5_core] [] mlx5_esw_vport_disable+0xc0/0x1d0 [mlx5_core] [] mlx5_eswitch_unload_ec_vf_vports+0xcc/0x150 [mlx5_core] [] mlx5_eswitch_disable_sriov+0x198/0x2a0 [mlx5_core] [] mlx5_device_disable_sriov+0xb8/0x1e0 [mlx5_core] [] mlx5_sriov_detach+0x40/0x50 [mlx5_core] [] mlx5_unload+0x40/0xc4 [mlx5_core] [] mlx5_unload_one_devl_locked+0x6c/0xe4 [mlx5_core] [] mlx5_unload_one+0x3c/0x60 [mlx5_core] [] shutdown+0x7c/0xa4 [mlx5_core] [] pci_device_shutdown+0x3c/0xa0 [] device_shutdown+0x170/0x340 [] __do_sys_reboot+0x1f4/0x2a0 [] __arm64_sys_reboot+0x2c/0x40 [] invoke_syscall+0x78/0x100 [] el0_svc_common.constprop.0+0x54/0x184 [] do_el0_svc+0x30/0xac [] el0_svc+0x48/0x160 [] el0t_64_sync_handler+0xa4/0x12c [] el0t_64_sync+0x1a4/0x1a8 [] --[ end trace 9c4601d68c70030e ]---
{
"affected": [],
"aliases": [
"CVE-2025-38109"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-03T09:15:24Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix ECVF vports unload on shutdown flow\n\nFix shutdown flow UAF when a virtual function is created on the embedded\nchip (ECVF) of a BlueField device. In such case the vport acl ingress\ntable is not properly destroyed.\n\nECVF functionality is independent of ecpf_vport_exists capability and\nthus functions mlx5_eswitch_(enable|disable)_pf_vf_vports() should not\ntest it when enabling/disabling ECVF vports.\n\nkernel log:\n[] refcount_t: underflow; use-after-free.\n[] WARNING: CPU: 3 PID: 1 at lib/refcount.c:28\n refcount_warn_saturate+0x124/0x220\n----------------\n[] Call trace:\n[] refcount_warn_saturate+0x124/0x220\n[] tree_put_node+0x164/0x1e0 [mlx5_core]\n[] mlx5_destroy_flow_table+0x98/0x2c0 [mlx5_core]\n[] esw_acl_ingress_table_destroy+0x28/0x40 [mlx5_core]\n[] esw_acl_ingress_lgcy_cleanup+0x80/0xf4 [mlx5_core]\n[] esw_legacy_vport_acl_cleanup+0x44/0x60 [mlx5_core]\n[] esw_vport_cleanup+0x64/0x90 [mlx5_core]\n[] mlx5_esw_vport_disable+0xc0/0x1d0 [mlx5_core]\n[] mlx5_eswitch_unload_ec_vf_vports+0xcc/0x150 [mlx5_core]\n[] mlx5_eswitch_disable_sriov+0x198/0x2a0 [mlx5_core]\n[] mlx5_device_disable_sriov+0xb8/0x1e0 [mlx5_core]\n[] mlx5_sriov_detach+0x40/0x50 [mlx5_core]\n[] mlx5_unload+0x40/0xc4 [mlx5_core]\n[] mlx5_unload_one_devl_locked+0x6c/0xe4 [mlx5_core]\n[] mlx5_unload_one+0x3c/0x60 [mlx5_core]\n[] shutdown+0x7c/0xa4 [mlx5_core]\n[] pci_device_shutdown+0x3c/0xa0\n[] device_shutdown+0x170/0x340\n[] __do_sys_reboot+0x1f4/0x2a0\n[] __arm64_sys_reboot+0x2c/0x40\n[] invoke_syscall+0x78/0x100\n[] el0_svc_common.constprop.0+0x54/0x184\n[] do_el0_svc+0x30/0xac\n[] el0_svc+0x48/0x160\n[] el0t_64_sync_handler+0xa4/0x12c\n[] el0t_64_sync+0x1a4/0x1a8\n[] --[ end trace 9c4601d68c70030e ]---",
"id": "GHSA-hv7w-4qc7-rw79",
"modified": "2025-11-21T00:30:20Z",
"published": "2025-07-03T09:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38109"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/24db585d369f949f698e03d7d8017e5ae19d0497"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5953ae44dfe5dbad374318875be834c3b7b71ee6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/687560d8a9a2d654829ad0da1ec24242f1de711d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/da15ca0553325acf68039015f2f4db750c8e2b96"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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