{"id":"DEBIAN-CVE-2025-21883","details":"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 $PF1 promisc on   sleep 1   echo 1 \u003e /sys/class/net/$PF1/device/sriov_numvfs   sleep 1   echo 1 \u003e /sys/class/net/$PF1/device/sriov_numvfs  Trace (minimized):   list_add corruption. next-\u003eprev 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).","modified":"2026-08-27T23:05:27.012986323Z","published":"2025-03-27T15:15:56.210Z","upstream":["CVE-2025-21883"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-21883"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.19-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-21883.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.19-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-21883.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}