{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72425", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.928Z", "datePublished": "2026-08-15T05:56:42.959Z", "dateUpdated": "2026-08-17T05:44:05.008Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:44:05.008Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix FDIR CTRL VSI resource leak in ice_reset_all_vfs()\n\nResetting all VFs causes resource leak on VFs with FDIR filters\nenabled as CTRL VSIs are only invalidated and not freed. Fix by using\nice_vf_ctrl_vsi_release() instead of ice_vf_ctrl_invalidate_vsi() which\naligns behavior with the ice_reset_vf() function.\n\nReproduction:\n echo 1 > /sys/class/net/$pf/device/sriov_numvfs\n ethtool -N $vf flow-type ether proto 0x9000 action 0\n echo 1 > /sys/class/net/$pf/device/reset" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The bug is reached via local host interfaces only: VF virtchnl mailbox messages (VIRTCHNL_OP_ADD_FDIR_FILTER) to create per-VF FDIR ctrl VSIs, and PF-wide reset paths (PCI sysfs reset, ethtool-driven PFR/CORER/GLOBR) that call ice_reset_all_vfs(); no network packet receive path is involved.\nAC:L - Once a VF has created an FDIR rule (which allocates the per-VF ctrl VSI), each PF-wide reset deterministically leaks that ctrl VSI because ice_reset_all_vfs() only invalidated ctrl_vsi_idx instead of calling ice_vf_ctrl_vsi_release(); the commit reproduces this reliably and the attacker controls the FDIR setup side of the race.\nPR:N - No host root or CAP_SYS_ADMIN is required on the vulnerable host: a tenant with an assigned SR-IOV VF can negotiate VIRTCHNL_VF_OFFLOAD_FDIR_PF and send VIRTCHNL_OP_ADD_FDIR_FILTER over the VF mailbox to create the ctrl VSI; PF-wide resets occur during normal firmware/PCI/driver recovery without further host credentials.\nUI:N - Exploitation does not require any victim user action such as opening files or clicking links; a malicious VM tenant programs FDIR filters via the standard iAVF virtchnl interface and the leak triggers automatically on subsequent PF-wide reset events.\nS:C - The vulnerable ice driver runs in the host kernel but is triggered from an SR-IOV VF guest security domain; leaked ctrl VSIs consume finite pf->vsi slots and hardware VSI resources on the host, degrading or denying NIC functionality for the hypervisor and other VMs on the same PF.\nC:N - This is a kernel resource leak (orphaned ICE_VSI_CTRL structures and associated queue/MSI-X/FDIR hardware resources) without out-of-bounds read, use-after-free, or other memory disclosure primitive; no confidential data is exposed.\nI:N - The flaw only fails to call ice_vsi_release()/ice_vsi_delete_from_hw() for per-VF ctrl VSIs during ice_reset_all_vfs(); it does not corrupt memory, modify data, or provide write or code-execution primitives.\nA:H - Each leaked ctrl VSI permanently consumes a limited VSI slot (pf->num_alloc_vsi) and hardware resources; repeated PF-wide resets with FDIR-enabled VFs can exhaust the VSI pool causing ice_vsi_alloc() failure and denial of network service for the host and all co-resident VFs on the NIC." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/intel/ice/ice_vf_lib.c" ], "versions": [ { "version": "da62c5ff9dcdac67204d6647f3cd43ad931a59f4", "lessThan": "b409a9dc37db8bd798122fc5bcdcfaccaf80db1e", "status": "affected", "versionType": "git" }, { "version": "da62c5ff9dcdac67204d6647f3cd43ad931a59f4", "lessThan": "335c2dd21ad9d520102906f96edb99fd5e89ac32", "status": "affected", "versionType": "git" }, { "version": "da62c5ff9dcdac67204d6647f3cd43ad931a59f4", "lessThan": "87a042e45bf4870dc75ea05b4fc0286abecb2a4d", "status": "affected", "versionType": "git" }, { "version": "da62c5ff9dcdac67204d6647f3cd43ad931a59f4", "lessThan": "dd6d8e4412f805937f61f00bbfdfe831978be235", "status": "affected", "versionType": "git" }, { "version": "da62c5ff9dcdac67204d6647f3cd43ad931a59f4", "lessThan": "b1fc5bafbc5f84df457b6f987ac993e0802f8d93", "status": "affected", "versionType": "git" }, { "version": "da62c5ff9dcdac67204d6647f3cd43ad931a59f4", "lessThan": "ebbe8868cf473f698e0fbaf436d2618b2bcda806", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/intel/ice/ice_vf_lib.c" ], "versions": [ { "version": "5.13", "status": "affected" }, { "version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b409a9dc37db8bd798122fc5bcdcfaccaf80db1e" }, { "url": "https://git.kernel.org/stable/c/335c2dd21ad9d520102906f96edb99fd5e89ac32" }, { "url": "https://git.kernel.org/stable/c/87a042e45bf4870dc75ea05b4fc0286abecb2a4d" }, { "url": "https://git.kernel.org/stable/c/dd6d8e4412f805937f61f00bbfdfe831978be235" }, { "url": "https://git.kernel.org/stable/c/b1fc5bafbc5f84df457b6f987ac993e0802f8d93" }, { "url": "https://git.kernel.org/stable/c/ebbe8868cf473f698e0fbaf436d2618b2bcda806" } ], "title": "ice: fix FDIR CTRL VSI resource leak in ice_reset_all_vfs()", "x_generator": { "engine": "bippy-1.2.0" } } } }