{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-56715", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T15:00:39.857Z", "datePublished": "2024-12-29T08:48:48.433Z", "dateUpdated": "2026-08-05T11:46:13.550Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:46:13.550Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nionic: Fix netdev notifier unregister on failure\n\nIf register_netdev() fails, then the driver leaks the netdev notifier.\nFix this by calling ionic_lif_unregister() on register_netdev()\nfailure. This will also call ionic_lif_unregister_phc() if it has\nalready been registered." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Both the creation of the dangling notifier (a local PCI driver probe of a Pensando/AMD ionic NIC) and the dereference (a local netdev event such as network-namespace creation) occur entirely on the local system; no network packet or remote peer data reaches this path.\nAC:L - Once probe has failed and left `ionic->nb` on `netdev_chain`, the freed-memory dereference is deterministic and infinitely repeatable — every `unshare -Urn`, container start, or `ip link` event walks the chain, with no race to win and no unpredictable memory layout required.\nPR:L - Reaching the dangling notifier requires no privilege beyond an ordinary local user: creating a network namespace via an unprivileged user namespace registers `lo` and fires `call_netdevice_notifiers(NETDEV_REGISTER)`, and the same user can groom the freed `struct ionic` region (kernel-stack/vmalloc and slab reclaim) to control the values read back.\nUI:N - No action by any victim user or administrator is needed at exploitation time; the attacker triggers the notifier chain walk himself through ordinary namespace or interface operations.\nS:U - The use-after-free corrupts kernel memory and hijacks control flow within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `notifier_call_chain()` reads `nb->next` and `nb->notifier_call` from the freed `struct ionic`, and the surviving `ionic_lif_notify()` callback further dereferences the stale `ionic`/`lif` pointers, so a reclaimed and attacker-shaped allocation yields an arbitrary kernel-read primitive.\nI:H - The chain walk performs `nb->notifier_call(nb, val, v)` on a function pointer loaded from freed memory — a direct indirect-call/control-flow-hijack primitive — and the corrupted `nb->next` linkage additionally lets a later `raw_notifier_chain_unregister()` write through attacker-influenced pointers.\nA:H - After a failed ionic probe the machine is left one netdev event away from an oops or panic in `notifier_call_chain()`, and any unprivileged user can force that crash on demand and repeatedly." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/pensando/ionic/ionic_lif.c" ], "versions": [ { "version": "30b87ab4c0b30e0f681cb7dfaab6c642dd17e454", "lessThan": "87847938f5708b2509b279369c96572254bcf2ba", "status": "affected", "versionType": "git" }, { "version": "30b87ab4c0b30e0f681cb7dfaab6c642dd17e454", "lessThan": "da93a12876f8b969df7316dc93aac7e725f88252", "status": "affected", "versionType": "git" }, { "version": "30b87ab4c0b30e0f681cb7dfaab6c642dd17e454", "lessThan": "da5736f516a664a9e1ff74902663c64c423045d2", "status": "affected", "versionType": "git" }, { "version": "30b87ab4c0b30e0f681cb7dfaab6c642dd17e454", "lessThan": "ee2e931b2b46de9af7f681258e8ec8e2cd81cfc6", "status": "affected", "versionType": "git" }, { "version": "30b87ab4c0b30e0f681cb7dfaab6c642dd17e454", "lessThan": "9590d32e090ea2751e131ae5273859ca22f5ac14", "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/pensando/ionic/ionic_lif.c" ], "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.176", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.122", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.68", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.7", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13", "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": "5.10", "versionEndExcluding": "5.15.176" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.122" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.6.68" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.12.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/87847938f5708b2509b279369c96572254bcf2ba" }, { "url": "https://git.kernel.org/stable/c/da93a12876f8b969df7316dc93aac7e725f88252" }, { "url": "https://git.kernel.org/stable/c/da5736f516a664a9e1ff74902663c64c423045d2" }, { "url": "https://git.kernel.org/stable/c/ee2e931b2b46de9af7f681258e8ec8e2cd81cfc6" }, { "url": "https://git.kernel.org/stable/c/9590d32e090ea2751e131ae5273859ca22f5ac14" } ], "title": "ionic: Fix netdev notifier unregister on failure", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-56715", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T19:58:37.829177Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-401", "description": "CWE-401 Missing Release of Memory after Effective Lifetime" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:07:06.875Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:53:03.632Z" } } ] } }