{"id":"CVE-2025-21883","summary":"ice: Fix deinitializing VF in error path","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).","modified":"2026-03-20T12:41:13.179720Z","published":"2025-03-27T14:57:11.766Z","related":["ALSA-2025:9302","ALSA-2025:9896","SUSE-SU-2025:01919-1","SUSE-SU-2025:01951-1","SUSE-SU-2025:01967-1","SUSE-SU-2025:1177-1","SUSE-SU-2025:1178-1","SUSE-SU-2025:1180-1","SUSE-SU-2025:20190-1","SUSE-SU-2025:20192-1","SUSE-SU-2025:20260-1","SUSE-SU-2025:20270-1","USN-7521-2"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21883.json"},"references":[{"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"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21883.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21883"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8cd8a6b17d275a45e3722d0215f6115b687c8c3e"},{"fixed":"3c01102bec9592928e6b155da41cfcd5d25a2066"},{"fixed":"a4880583f88deba63504ce1c8287a70d39c01378"},{"fixed":"34393fd78d7183a007eaf0090966ebedcc29bd57"},{"fixed":"79990cf5e7aded76d0c092c9f5ed31eb1c75e02c"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21883.json"}}],"schema_version":"1.7.5"}