{ "schema_version": "1.6.1", "id": "RPI-CVE-2024-50170", "modified": "2026-10-09T11:39:44Z", "upstream": [ "CVE-2024-50170" ], "published": "2024-11-07T09:34:57Z", "summary": "net: bcmasp: fix potential memory leak in bcmasp_xmit()", "details": "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.", "severity": [ { "type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" } ], "affected": [ { "package": { "ecosystem": "Raspberry Pi OS:12", "name": "linux" }, "versions": [ "1:6.6.20-1+rpt1", "1:6.6.28-1+rpt1", "1:6.6.31-1+rpt1", "1:6.6.47-1+rpt1", "1:6.6.51-1+rpt1", "1:6.6.51-1+rpt2", "1:6.6.51-1+rpt3" ], "ecosystem_specific": { "binaries": [ { "binary_name": "linux-image-6.6.20+rpt-rpi-2712", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.20+rpt-rpi-v8", "binary_version": "1:6.6.20-1+rpt1" }, { "binary_name": "linux-image-6.6.28+rpt-rpi-2712", "binary_version": "1:6.6.28-1+rpt1" }, { "binary_name": "linux-image-6.6.28+rpt-rpi-v8", "binary_version": "1:6.6.28-1+rpt1" }, { "binary_name": "linux-image-6.6.31+rpt-rpi-2712", "binary_version": "1:6.6.31-1+rpt1" }, { "binary_name": "linux-image-6.6.31+rpt-rpi-v8", "binary_version": "1:6.6.31-1+rpt1" }, { "binary_name": "linux-image-6.6.47+rpt-rpi-2712", "binary_version": "1:6.6.47-1+rpt1" }, { "binary_name": "linux-image-6.6.47+rpt-rpi-v8", "binary_version": "1:6.6.47-1+rpt1" }, { "binary_name": "linux-image-6.6.51+rpt-rpi-2712", "binary_version": "1:6.6.51-1+rpt1" }, { "binary_name": "linux-image-6.6.51+rpt-rpi-v8", "binary_version": "1:6.6.51-1+rpt1" }, { "binary_name": "linux-image-6.6.51+rpt-rpi-2712", "binary_version": "1:6.6.51-1+rpt2" }, { "binary_name": "linux-image-6.6.51+rpt-rpi-v8", "binary_version": "1:6.6.51-1+rpt2" }, { "binary_name": "linux-image-6.6.51+rpt-rpi-2712", "binary_version": "1:6.6.51-1+rpt3" }, { "binary_name": "linux-image-6.6.51+rpt-rpi-v8", "binary_version": "1:6.6.51-1+rpt3" } ] }, "database_specific": { "per_version": { "1:6.6.20-1+rpt1": { "linux_commit": "6f16847710cc0502450788b9f12f0a14d3429668", "upstream_version": "6.6.20", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.59" }, "1:6.6.28-1+rpt1": { "linux_commit": "0c341f47adc3578cd5f817aa20ee2b7f9ae6b23e", "upstream_version": "6.6.28", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.59" }, "1:6.6.31-1+rpt1": { "linux_commit": "c1432b4bae5b6582f4d32ba381459f33c34d1424", "upstream_version": "6.6.31", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.59" }, "1:6.6.47-1+rpt1": { "linux_commit": "cf64a1dfecc2dc418efdd61701c1a4b185ab4761", "upstream_version": "6.6.47", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.59" }, "1:6.6.51-1+rpt1": { "linux_commit": "0094eba3f2a4338cfa6854b0b5104d02ba0fa01f", "upstream_version": "6.6.51", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.59" }, "1:6.6.51-1+rpt2": { "linux_commit": "82a50e430ef1d6eb37d78e25aa572c1f6ea56160", "upstream_version": "6.6.51", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.59" }, "1:6.6.51-1+rpt3": { "linux_commit": "5aeecea9f4a45248bcf564dec924965e066a7bfd", "upstream_version": "6.6.51", "assessment": "commit ancestry (strak rule)", "upstream_fixed": "6.6.59" } } } } ], "references": [ { "type": "ADVISORY", "url": "https://www.cve.org/CVERecord?id=CVE-2024-50170" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/7218de0778aefbbbcfe474a55f88bbf6f244627d" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/f689f20d3e09f2d4d0a2c575a9859115a33e68bd" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/fed07d3eb8a8d9fcc0e455175a89bc6445d6faed" } ], "database_specific": { "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git", "upstream_modified": "2026-08-05T11:52:36Z", "severity": { "source": "kernel CNA", "cvss_v3_score": 7.5, "cvss_v3_severity": "High", "scenario": "AV:N - The leak sits in the `ndo_start_xmit` handler of an Ethernet NIC, which is driven by remotely-solicited transmissions \u2014 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 \u2014 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 \u2014 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." } } }