{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54040", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T10:53:46.181Z", "datePublished": "2025-12-24T10:56:06.094Z", "dateUpdated": "2026-08-05T09:16:41.015Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:16:41.015Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix wrong fallback logic for FDIR\n\nWhen adding a FDIR filter, if ice_vc_fdir_set_irq_ctx returns failure,\nthe inserted fdir entry will not be removed and if ice_vc_fdir_write_fltr\nreturns failure, the fdir context info for irq handler will not be cleared\nwhich may lead to inconsistent or memory leak issue. This patch refines\nfailure cases to resolve this issue." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The bug is reached only via virtchnl mailbox messages sent by a Virtual Function over the PCIe/admin-queue interface, not from network packets; the attacker must be attached to the machine as a VF owner (typically a passed-through SR-IOV device in a guest VM).\nAC:L - The failing path is `ice_vc_fdir_set_irq_ctx()` returning -EBUSY, which the VF triggers deterministically by issuing two ADD_FDIR_FILTER requests inside the ~10 ms in-flight window it fully controls; heap reclaim of the freed `conf` uses the identical same-size devm allocation issued by simply adding more filters.\nPR:L - From the perspective of the vulnerable component (the host PF driver), the attacker holds only the low privilege of controlling an assigned VF — no host credentials, no capability check, and no authorization exists on the virtchnl handler path beyond the opcode allowlist.\nUI:N - Exploitation is entirely driven by mailbox messages the attacker emits; no action by a host administrator or any other user is needed.\nS:C - The attacker acts from a VF (normally owned by an untrusted guest/tenant) while the corrupted IDR, list and freed memory belong to the host PF driver, so the impact crosses the guest-to-host security authority boundary — consistent with how sibling i40e VF→PF CVEs are scored.\nC:H - The dangling IDR entry lets a subsequent DEL_FDIR_FILTER read the reclaimed object and program hardware filter state from it, and the corrupted list is walked on every later add, giving use-after-free reads of arbitrary host kernel heap contents.\nI:H - The stale `fltr_node` yields `list_del()`/`list_add()` writes through attacker-groomed freed memory, and `ice_vc_fdir_flush_entry()` double-frees the same `conf`, providing write and heap-metadata corruption primitives sufficient for control-flow hijack in the host kernel.\nA:H - Use-after-free, list corruption and double free in the host PF driver reliably produce oops/panic and can be re-triggered at will by the VF, taking down the host and every other tenant sharing the adapter." } ] } ], "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_virtchnl_fdir.c" ], "versions": [ { "version": "1f7ea1cd6a3748427512ccc9582e18cd9efea966", "lessThan": "391d28c0e38c0e5b11a4240a2b4976cf63e87f45", "status": "affected", "versionType": "git" }, { "version": "1f7ea1cd6a3748427512ccc9582e18cd9efea966", "lessThan": "aad3b871efe26f36f45f8b4649653b5d3fd9c35e", "status": "affected", "versionType": "git" }, { "version": "1f7ea1cd6a3748427512ccc9582e18cd9efea966", "lessThan": "cbfed5f114b5310f221979fc8190f55c6abc3400", "status": "affected", "versionType": "git" }, { "version": "1f7ea1cd6a3748427512ccc9582e18cd9efea966", "lessThan": "b4a01ace20f5c93c724abffc0a83ec84f514b98d", "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_virtchnl_fdir.c" ], "versions": [ { "version": "5.13", "status": "affected" }, { "version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.107", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.24", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.11", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "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": "5.15.107" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.24" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.2.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/391d28c0e38c0e5b11a4240a2b4976cf63e87f45" }, { "url": "https://git.kernel.org/stable/c/aad3b871efe26f36f45f8b4649653b5d3fd9c35e" }, { "url": "https://git.kernel.org/stable/c/cbfed5f114b5310f221979fc8190f55c6abc3400" }, { "url": "https://git.kernel.org/stable/c/b4a01ace20f5c93c724abffc0a83ec84f514b98d" } ], "title": "ice: fix wrong fallback logic for FDIR", "x_generator": { "engine": "bippy-1.2.0" } } } }