{"id":"CVE-2026-72425","state":"PUBLISHED","title":"ice: fix FDIR CTRL VSI resource leak in ice_reset_all_vfs()","description":"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","publishedAt":"2026-08-15T05:56:42.959Z","updatedAt":"2026-10-16T18:55:23.412Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"b409a9dc37db8bd798122fc5bcdcfaccaf80db1e","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"335c2dd21ad9d520102906f96edb99fd5e89ac32","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"87a042e45bf4870dc75ea05b4fc0286abecb2a4d","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"dd6d8e4412f805937f61f00bbfdfe831978be235","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"b1fc5bafbc5f84df457b6f987ac993e0802f8d93","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"ebbe8868cf473f698e0fbaf436d2618b2bcda806","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/ice/ice_vf_lib.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/ice/ice_vf_lib.c"]}],"references":["https://git.kernel.org/stable/c/b409a9dc37db8bd798122fc5bcdcfaccaf80db1e","https://git.kernel.org/stable/c/335c2dd21ad9d520102906f96edb99fd5e89ac32","https://git.kernel.org/stable/c/87a042e45bf4870dc75ea05b4fc0286abecb2a4d","https://git.kernel.org/stable/c/dd6d8e4412f805937f61f00bbfdfe831978be235","https://git.kernel.org/stable/c/b1fc5bafbc5f84df457b6f987ac993e0802f8d93","https://git.kernel.org/stable/c/ebbe8868cf473f698e0fbaf436d2618b2bcda806"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72425.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72425","state":"PUBLISHED","datePublished":"2026-08-15T05:56:42.959Z","dateUpdated":"2026-10-16T18:55:23.412Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.928Z"},"containers":{"cna":{"title":"ice: fix FDIR CTRL VSI resource leak in ice_reset_all_vfs()","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"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"b409a9dc37db8bd798122fc5bcdcfaccaf80db1e","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"335c2dd21ad9d520102906f96edb99fd5e89ac32","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"87a042e45bf4870dc75ea05b4fc0286abecb2a4d","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"dd6d8e4412f805937f61f00bbfdfe831978be235","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"b1fc5bafbc5f84df457b6f987ac993e0802f8d93","versionType":"git"},{"version":"da62c5ff9dcdac67204d6647f3cd43ad931a59f4","status":"affected","lessThan":"ebbe8868cf473f698e0fbaf436d2618b2bcda806","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/ice/ice_vf_lib.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/ice/ice_vf_lib.c"]}],"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"}],"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."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:44:05.008Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-72425","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-16T18:49:44.051789Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-16T18:55:23.412Z"}}]}}}