CVE-2025-21883

{"id": "CVE-2025-21883", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-03-27T15:15:56.210", "references": [{"url": "https://git.kernel.org/stable/c/34393fd78d7183a007eaf0090966ebedcc29bd57", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3c01102bec9592928e6b155da41cfcd5d25a2066", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/79990cf5e7aded76d0c092c9f5ed31eb1c75e02c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a4880583f88deba63504ce1c8287a70d39c01378", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "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 $PF1 promisc on\n sleep 1\n echo 1 > /sys/class/net/$PF1/device/sriov_numvfs\n sleep 1\n echo 1 > /sys/class/net/$PF1/device/sriov_numvfs\n\nTrace (minimized):\n list_add corruption. next->prev 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)."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ice: Se corrige la desinicializaci\u00f3n de VF en la ruta de error. Si ice_ena_vfs() falla tras llamar a ice_create_vf_entries(), libera todas las VF sin eliminarlas de la lista de buzones PF-VF de la instant\u00e1nea, lo que provoca la corrupci\u00f3n de la lista. Reproductor: devlink dev eswitch set $PF1_PCI mode switchdev ip ls $PF1 up ip ls $PF1 promisc on sleep 1 echo 1 > /sys/class/net/$PF1/device/sriov_numvfs sleep 1 echo 1 > /sys/class/net/$PF1/device/sriov_numvfs Rastreo (minimizado): corrupci\u00f3n de list_add. siguiente->anterior deber\u00eda ser anterior (ffff8882e241c6f0), pero era 0000000000000000. (siguiente=ffff888455da1330). \u00a1ERROR del n\u00facleo en 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] A veces, un informe de KASAN se puede ver con un seguimiento de pila similar: ERROR: KASAN: use-after-free en __list_add_valid_or_report+0xf1/0x100. Los VF se a\u00f1aden a esta lista en ice_mbx_init_vf_info(), pero solo se eliminan en ice_free_vfs(). Traslada la eliminaci\u00f3n a ice_free_vf_entries(), que tambi\u00e9n se invoca en otros lugares donde se eliminan VF (incluido el propio ice_free_vfs())."}], "lastModified": "2025-10-29T16:50:28.967", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "43BFDFF7-7618-42C6-9556-24E4CC326061", "versionEndExcluding": "6.6.81", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3D5C8D9A-4013-4C1A-810F-AA540BB5737C", "versionEndExcluding": "6.12.18", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "64F12D9B-71C2-4CD7-A288-0D5EF1709620", "versionEndExcluding": "6.13.6", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "186716B6-2B66-4BD0-852E-D48E71C0C85F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D3E781C-403A-498F-9DA9-ECEE50F41E75"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "66619FB8-0AAF-4166-B2CF-67B24143261D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D3D6550E-6679-4560-902D-AF52DCFE905B"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}