ghsa-957j-8wc9-pfwx
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
ice: Fix deinitializing VF in error path
If ice_ena_vfs() fails after calling ice_create_vf_entries(), it frees all VFs without removing them from snapshot PF-VF mailbox list, leading to list corruption.
Reproducer: devlink dev eswitch set $PF1_PCI mode switchdev ip l s $PF1 up ip l s $PF1 promisc on sleep 1 echo 1 > /sys/class/net/$PF1/device/sriov_numvfs sleep 1 echo 1 > /sys/class/net/$PF1/device/sriov_numvfs
Trace (minimized): list_add corruption. next->prev should be prev (ffff8882e241c6f0), but was 0000000000000000. (next=ffff888455da1330). kernel BUG at lib/list_debug.c:29! RIP: 0010:__list_add_valid_or_report+0xa6/0x100 ice_mbx_init_vf_info+0xa7/0x180 [ice] ice_initialize_vf_entry+0x1fa/0x250 [ice] ice_sriov_configure+0x8d7/0x1520 [ice] ? __percpu_ref_switch_mode+0x1b1/0x5d0 ? __pfx_ice_sriov_configure+0x10/0x10 [ice]
Sometimes a KASAN report can be seen instead with a similar stack trace: BUG: KASAN: use-after-free in __list_add_valid_or_report+0xf1/0x100
VFs are added to this list in ice_mbx_init_vf_info(), but only removed in ice_free_vfs(). Move the removing to ice_free_vf_entries(), which is also being called in other places where VFs are being removed (including ice_free_vfs() itself).
{
"affected": [],
"aliases": [
"CVE-2025-21883"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-27T15:15:56Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix deinitializing VF in error path\n\nIf ice_ena_vfs() fails after calling ice_create_vf_entries(), it frees\nall VFs without removing them from snapshot PF-VF mailbox list, leading\nto list corruption.\n\nReproducer:\n devlink dev eswitch set $PF1_PCI mode switchdev\n ip l s $PF1 up\n ip l s $PF1 promisc on\n sleep 1\n echo 1 \u003e /sys/class/net/$PF1/device/sriov_numvfs\n sleep 1\n echo 1 \u003e /sys/class/net/$PF1/device/sriov_numvfs\n\nTrace (minimized):\n list_add corruption. next-\u003eprev should be prev (ffff8882e241c6f0), but was 0000000000000000. (next=ffff888455da1330).\n kernel BUG at lib/list_debug.c:29!\n RIP: 0010:__list_add_valid_or_report+0xa6/0x100\n ice_mbx_init_vf_info+0xa7/0x180 [ice]\n ice_initialize_vf_entry+0x1fa/0x250 [ice]\n ice_sriov_configure+0x8d7/0x1520 [ice]\n ? __percpu_ref_switch_mode+0x1b1/0x5d0\n ? __pfx_ice_sriov_configure+0x10/0x10 [ice]\n\nSometimes a KASAN report can be seen instead with a similar stack trace:\n BUG: KASAN: use-after-free in __list_add_valid_or_report+0xf1/0x100\n\nVFs are added to this list in ice_mbx_init_vf_info(), but only removed\nin ice_free_vfs(). Move the removing to ice_free_vf_entries(), which is\nalso being called in other places where VFs are being removed (including\nice_free_vfs() itself).",
"id": "GHSA-957j-8wc9-pfwx",
"modified": "2025-03-27T15:31:12Z",
"published": "2025-03-27T15:31:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21883"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/34393fd78d7183a007eaf0090966ebedcc29bd57"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3c01102bec9592928e6b155da41cfcd5d25a2066"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/79990cf5e7aded76d0c092c9f5ed31eb1c75e02c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a4880583f88deba63504ce1c8287a70d39c01378"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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