{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50170", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.963Z", "datePublished": "2024-11-07T09:31:46.722Z", "dateUpdated": "2026-08-05T11:42:14.785Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:42:14.785Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bcmasp: fix potential memory leak in bcmasp_xmit()\n\nThe bcmasp_xmit() returns NETDEV_TX_OK without freeing skb\nin case of mapping fails, add dev_kfree_skb() to fix it." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - The leak sits in the `ndo_start_xmit` handler of an Ethernet NIC, which is driven by remotely-solicited transmissions — an unauthenticated remote peer flooding the host with ARP/ICMP/TCP triggers a kernel-generated reply through `bcmasp_xmit()` for each packet. This matches how other net-driver/net-stack skb-leak CVEs are scored (e.g. CVE-2026-23453, CVE-2026-43373, CVE-2025-37757).\nAC:L - The attacker drives the vulnerable path at will by generating sustained traffic, and that same flood raises in-flight DMA/swiotlb pressure that produces the `dma_mapping_error()` condition; once a failure occurs the leaked mappings make further failures progressively easier, so the trigger is repeatable rather than dependent on conditions outside the attacker's influence.\nPR:N - No credentials or privileges are needed — a remote unauthenticated attacker merely sends packets that elicit kernel replies, and locally any unprivileged process can transmit on the interface via an ordinary socket.\nUI:N - No victim action is required; the transmit path runs autonomously as the kernel answers received traffic or as any process sends data.\nS:U - The leaked skbs and DMA mappings are kernel resources of the same system and security authority as the vulnerable driver; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - Nothing is disclosed to the attacker — the skb is simply never freed, and no descriptor holding stale data is published to hardware, so there is no out-of-bounds read or information leak.\nI:N - No memory is corrupted or modified: the descriptor ring is rewound and `tx_spb_dma_valid` is left unadvanced, so the hardware never consumes the partially-built entries and no write primitive arises.\nA:H - Each failure permanently leaks a full skb (head plus fragment pages) and its DMA/swiotlb mappings, and the lost DMA resources make further failures more likely, so a sustained remote-driven flood escalates into unbounded kernel memory exhaustion, OOM kills, and system-wide denial of service on the memory-constrained STB/embedded platforms this driver targets." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/broadcom/asp2/bcmasp_intf.c" ], "versions": [ { "version": "490cb412007de593e07c1d3e2b1ec4233886707c", "lessThan": "7218de0778aefbbbcfe474a55f88bbf6f244627d", "status": "affected", "versionType": "git" }, { "version": "490cb412007de593e07c1d3e2b1ec4233886707c", "lessThan": "f689f20d3e09f2d4d0a2c575a9859115a33e68bd", "status": "affected", "versionType": "git" }, { "version": "490cb412007de593e07c1d3e2b1ec4233886707c", "lessThan": "fed07d3eb8a8d9fcc0e455175a89bc6445d6faed", "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/broadcom/asp2/bcmasp_intf.c" ], "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.59", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.6", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "6.6", "versionEndExcluding": "6.6.59" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.11.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/7218de0778aefbbbcfe474a55f88bbf6f244627d" }, { "url": "https://git.kernel.org/stable/c/f689f20d3e09f2d4d0a2c575a9859115a33e68bd" }, { "url": "https://git.kernel.org/stable/c/fed07d3eb8a8d9fcc0e455175a89bc6445d6faed" } ], "title": "net: bcmasp: fix potential memory leak in bcmasp_xmit()", "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-2024-50170", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:19:39.275994Z" } } } ], "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": "2025-10-01T20:27:11.113Z" } } ] } }