ghsa-wx5g-cq33-j3p6
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
idpf: convert control queue mutex to a spinlock
With VIRTCHNL2_CAP_MACFILTER enabled, the following warning is generated on module load:
[ 324.701677] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578 [ 324.701684] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1582, name: NetworkManager [ 324.701689] preempt_count: 201, expected: 0 [ 324.701693] RCU nest depth: 0, expected: 0 [ 324.701697] 2 locks held by NetworkManager/1582: [ 324.701702] #0: ffffffff9f7be770 (rtnl_mutex){....}-{3:3}, at: rtnl_newlink+0x791/0x21e0 [ 324.701730] #1: ff1100216c380368 (_xmit_ETHER){....}-{2:2}, at: __dev_open+0x3f0/0x870 [ 324.701749] Preemption disabled at: [ 324.701752] [] __dev_open+0x3dd/0x870 [ 324.701765] CPU: 30 UID: 0 PID: 1582 Comm: NetworkManager Not tainted 6.15.0-rc5+ #2 PREEMPT(voluntary) [ 324.701771] Hardware name: Intel Corporation M50FCP2SBSTD/M50FCP2SBSTD, BIOS SE5C741.86B.01.01.0001.2211140926 11/14/2022 [ 324.701774] Call Trace: [ 324.701777] [ 324.701779] dump_stack_lvl+0x5d/0x80 [ 324.701788] ? __dev_open+0x3dd/0x870 [ 324.701793] __might_resched.cold+0x1ef/0x23d <..> [ 324.701818] __mutex_lock+0x113/0x1b80 <..> [ 324.701917] idpf_ctlq_clean_sq+0xad/0x4b0 [idpf] [ 324.701935] ? kasan_save_track+0x14/0x30 [ 324.701941] idpf_mb_clean+0x143/0x380 [idpf] <..> [ 324.701991] idpf_send_mb_msg+0x111/0x720 [idpf] [ 324.702009] idpf_vc_xn_exec+0x4cc/0x990 [idpf] [ 324.702021] ? rcu_is_watching+0x12/0xc0 [ 324.702035] idpf_add_del_mac_filters+0x3ed/0xb50 [idpf] <..> [ 324.702122] __hw_addr_sync_dev+0x1cf/0x300 [ 324.702126] ? find_held_lock+0x32/0x90 [ 324.702134] idpf_set_rx_mode+0x317/0x390 [idpf] [ 324.702152] __dev_open+0x3f8/0x870 [ 324.702159] ? __pfxdevopen+0x10/0x10 [ 324.702174] dev_change_flags+0x443/0x650 <..> [ 324.702208] netif_change_flags+0x80/0x160 [ 324.702218] do_setlink.isra.0+0x16a0/0x3960 <..> [ 324.702349] rtnl_newlink+0x12fd/0x21e0
The sequence is as follows: rtnl_newlink()-> __dev_change_flags()-> __dev_open()-> dev_set_rx_mode() - > # disables BH and grabs "dev->addr_list_lock" idpf_set_rx_mode() -> # proceed only if VIRTCHNL2_CAP_MACFILTER is ON __dev_uc_sync() -> idpf_add_mac_filter -> idpf_add_del_mac_filters -> idpf_send_mb_msg() -> idpf_mb_clean() -> idpf_ctlq_clean_sq() # mutex_lock(cq_lock)
Fix by converting cq_lock to a spinlock. All operations under the new lock are safe except freeing the DMA memory, which may use vunmap(). Fix by requesting a contiguous physical memory for the DMA mapping.
{
"affected": [],
"aliases": [
"CVE-2025-38392"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-25T13:15:28Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: convert control queue mutex to a spinlock\n\nWith VIRTCHNL2_CAP_MACFILTER enabled, the following warning is generated\non module load:\n\n[ 324.701677] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:578\n[ 324.701684] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1582, name: NetworkManager\n[ 324.701689] preempt_count: 201, expected: 0\n[ 324.701693] RCU nest depth: 0, expected: 0\n[ 324.701697] 2 locks held by NetworkManager/1582:\n[ 324.701702] #0: ffffffff9f7be770 (rtnl_mutex){....}-{3:3}, at: rtnl_newlink+0x791/0x21e0\n[ 324.701730] #1: ff1100216c380368 (_xmit_ETHER){....}-{2:2}, at: __dev_open+0x3f0/0x870\n[ 324.701749] Preemption disabled at:\n[ 324.701752] [\u003cffffffff9cd23b9d\u003e] __dev_open+0x3dd/0x870\n[ 324.701765] CPU: 30 UID: 0 PID: 1582 Comm: NetworkManager Not tainted 6.15.0-rc5+ #2 PREEMPT(voluntary)\n[ 324.701771] Hardware name: Intel Corporation M50FCP2SBSTD/M50FCP2SBSTD, BIOS SE5C741.86B.01.01.0001.2211140926 11/14/2022\n[ 324.701774] Call Trace:\n[ 324.701777] \u003cTASK\u003e\n[ 324.701779] dump_stack_lvl+0x5d/0x80\n[ 324.701788] ? __dev_open+0x3dd/0x870\n[ 324.701793] __might_resched.cold+0x1ef/0x23d\n\u003c..\u003e\n[ 324.701818] __mutex_lock+0x113/0x1b80\n\u003c..\u003e\n[ 324.701917] idpf_ctlq_clean_sq+0xad/0x4b0 [idpf]\n[ 324.701935] ? kasan_save_track+0x14/0x30\n[ 324.701941] idpf_mb_clean+0x143/0x380 [idpf]\n\u003c..\u003e\n[ 324.701991] idpf_send_mb_msg+0x111/0x720 [idpf]\n[ 324.702009] idpf_vc_xn_exec+0x4cc/0x990 [idpf]\n[ 324.702021] ? rcu_is_watching+0x12/0xc0\n[ 324.702035] idpf_add_del_mac_filters+0x3ed/0xb50 [idpf]\n\u003c..\u003e\n[ 324.702122] __hw_addr_sync_dev+0x1cf/0x300\n[ 324.702126] ? find_held_lock+0x32/0x90\n[ 324.702134] idpf_set_rx_mode+0x317/0x390 [idpf]\n[ 324.702152] __dev_open+0x3f8/0x870\n[ 324.702159] ? __pfx___dev_open+0x10/0x10\n[ 324.702174] __dev_change_flags+0x443/0x650\n\u003c..\u003e\n[ 324.702208] netif_change_flags+0x80/0x160\n[ 324.702218] do_setlink.isra.0+0x16a0/0x3960\n\u003c..\u003e\n[ 324.702349] rtnl_newlink+0x12fd/0x21e0\n\nThe sequence is as follows:\n\trtnl_newlink()-\u003e\n\t__dev_change_flags()-\u003e\n\t__dev_open()-\u003e\n\tdev_set_rx_mode() - \u003e # disables BH and grabs \"dev-\u003eaddr_list_lock\"\n\tidpf_set_rx_mode() -\u003e # proceed only if VIRTCHNL2_CAP_MACFILTER is ON\n\t__dev_uc_sync() -\u003e\n\tidpf_add_mac_filter -\u003e\n\tidpf_add_del_mac_filters -\u003e\n\tidpf_send_mb_msg() -\u003e\n\tidpf_mb_clean() -\u003e\n\tidpf_ctlq_clean_sq() # mutex_lock(cq_lock)\n\nFix by converting cq_lock to a spinlock. All operations under the new\nlock are safe except freeing the DMA memory, which may use vunmap(). Fix\nby requesting a contiguous physical memory for the DMA mapping.",
"id": "GHSA-wx5g-cq33-j3p6",
"modified": "2025-07-25T15:30:52Z",
"published": "2025-07-25T15:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38392"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9a36715cd6bc6a6f16230e19a7f947bab34b3fe5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b2beb5bb2cd90d7939e470ed4da468683f41baa3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dc6c3c2c9dfdaa3a3357f59a80a2904677a71a9a"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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