{"id":"CVE-2026-64547","summary":"net: usb: net1080: validate packet_len before pad-byte access in rx_fixup","details":"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-\u003edata[packet_len] before the skb-\u003elen != 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 \u003e= skb-\u003elen before reading.","modified":"2026-08-18T03:30:58.651987075Z","published":"2026-07-27T20:10:37.786Z","related":["openSUSE-SU-2026:11476-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64547.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/03f384bc0cb8d4a1301d4f5b0baef2d980258383"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4dc8484be3302d187274364820d3bef6c62bde32"},{"type":"WEB","url":"https://git.kernel.org/stable/c/685e92934f11d5e215dad58813e2f9955ac2f436"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b153cfe84b1340c69a13d0957665a2bfcf21239c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c087749815379e9af2fdbeb08bfc33870b103958"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e4a87126c085b097d29e17e3b7647295bba8be7c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ea866cab12db1a2100b400a8b03569e5bc0ee29a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f42217fa7d535e9ec4151f7971f06f6ea65e850a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64547.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64547"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"904813cd8a0b334189da285bb05af0b18b062502"},{"fixed":"f42217fa7d535e9ec4151f7971f06f6ea65e850a"},{"fixed":"c087749815379e9af2fdbeb08bfc33870b103958"},{"fixed":"e4a87126c085b097d29e17e3b7647295bba8be7c"},{"fixed":"685e92934f11d5e215dad58813e2f9955ac2f436"},{"fixed":"4dc8484be3302d187274364820d3bef6c62bde32"},{"fixed":"b153cfe84b1340c69a13d0957665a2bfcf21239c"},{"fixed":"ea866cab12db1a2100b400a8b03569e5bc0ee29a"},{"fixed":"03f384bc0cb8d4a1301d4f5b0baef2d980258383"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64547.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.14"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64547.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}