{"id":"CVE-2026-64547","title":"net: usb: net1080: validate packet_len before pad-byte access in rx_fixup","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: net1080: validate packet_len before pad-byte access in rx_fixup\n\nFor an even packet_len, net1080_rx_fixup() reads the pad byte at\nskb->data[packet_len] before…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < f42217fa7d535e9ec4151f7971f06f6ea65e850a","Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < c087749815379e9af2fdbeb08bfc33870b103958","Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < e4a87126c085b097d29e17e3b7647295bba8be7c","Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < 685e92934f11d5e215dad58813e2f9955ac2f436","Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < 4dc8484be3302d187274364820d3bef6c62bde32","Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < b153cfe84b1340c69a13d0957665a2bfcf21239c","Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < ea866cab12db1a2100b400a8b03569e5bc0ee29a","Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < 03f384bc0cb8d4a1301d4f5b0baef2d980258383","Linux 2.6.14"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T15:42:20.565927Z"},"published":"2026-07-27","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:52:51.724Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64547","references":[{"url":"https://git.kernel.org/stable/c/f42217fa7d535e9ec4151f7971f06f6ea65e850a"},{"url":"https://git.kernel.org/stable/c/c087749815379e9af2fdbeb08bfc33870b103958"},{"url":"https://git.kernel.org/stable/c/e4a87126c085b097d29e17e3b7647295bba8be7c"},{"url":"https://git.kernel.org/stable/c/685e92934f11d5e215dad58813e2f9955ac2f436"},{"url":"https://git.kernel.org/stable/c/4dc8484be3302d187274364820d3bef6c62bde32"},{"url":"https://git.kernel.org/stable/c/b153cfe84b1340c69a13d0957665a2bfcf21239c"},{"url":"https://git.kernel.org/stable/c/ea866cab12db1a2100b400a8b03569e5bc0ee29a"},{"url":"https://git.kernel.org/stable/c/03f384bc0cb8d4a1301d4f5b0baef2d980258383"}],"tags":["cve.org"],"epss":0.00274,"epssPercentile":0.18487,"ingestedAt":"2026-10-16T17:24:46.831Z","slug":"CVE-2026-64547","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: net1080: validate packet_len before pad-byte access in rx_fixup\n\nFor an even packet_len, net1080_rx_fixup() reads the pad byte at\nskb->data[packet_len] before the skb->len != packet_len check further\ndown, and packet_len is only bounded against NC_MAX_PACKET. A malicious\nNetChip 1080 device can send a short frame advertising a large even\npacket_len (e.g. 0x4000), so the pad-byte read lands past the end of the\nskb:\n\n  BUG: KASAN: slab-out-of-bounds in net1080_rx_fixup\n  Read of size 1 at addr ffff8880106c83c6 by task ksoftirqd/0/14\n   ...\n   net1080_rx_fixup (drivers/net/usb/net1080.c:384)\n   usbnet_bh (drivers/net/usb/usbnet.c:1589)\n   process_one_work (kernel/workqueue.c:3322)\n   bh_worker (kernel/workqueue.c:3708)\n   tasklet_action (kernel/softirq.c:965)\n   handle_softirqs (kernel/softirq.c:622)\n   ...\n\nReject the frame when packet_len >= skb->len before reading.\n\n## Affected\n\n- `Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < f42217fa7d535e9ec4151f7971f06f6ea65e850a`\n- `Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < c087749815379e9af2fdbeb08bfc33870b103958`\n- `Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < e4a87126c085b097d29e17e3b7647295bba8be7c`\n- `Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < 685e92934f11d5e215dad58813e2f9955ac2f436`\n- `Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < 4dc8484be3302d187274364820d3bef6c62bde32`\n- `Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < b153cfe84b1340c69a13d0957665a2bfcf21239c`\n- `Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < ea866cab12db1a2100b400a8b03569e5bc0ee29a`\n- `Linux >= 904813cd8a0b334189da285bb05af0b18b062502 < 03f384bc0cb8d4a1301d4f5b0baef2d980258383`\n- `Linux 2.6.14`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}