CVE-2026-64547net: usb: net1080: validate packet_len before pad-byte access in rx_fixup
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: net: usb: net1080: validate packet_len before pad-byte access in rx_fixup For an even packet_len, net1080_rx_fixup() reads the pad byte at skb->data[packet_len] before the skb->len != packet_len check further down, and packet_len is only bounded against NC_MAX_PACKET. A malicious NetChip 1080 device can send a short frame advertising a large even packet_len (e.g. 0x4000), so the pad-byte read lands past the end of the skb: BUG: KASAN: slab-out-of-bounds in net1080_rx_fixup Read of size 1 at addr ffff8880106c83c6 by task ksoftirqd/0/14 ... net1080_rx_fixup (drivers/net/usb/net1080.c:384) usbnet_bh (drivers/net/usb/usbnet.c:1589) process_one_work (kernel/workqueue.c:3322) bh_worker (kernel/workqueue.c:3708) tasklet_action (kernel/softirq.c:965) handle_softirqs (kernel/softirq.c:622) ... Reject the frame when packet_len >= skb->len before reading.
- CVSS
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 904813cd8a0b334189da285bb05af0b18b062502 before f42217fa7d535e9ec4151f7971f06f6ea65e850a; from 904813cd8a0b334189da285bb05af0b18b062502 before c087749815379e9af2fdbeb08bfc33870b103958; from 904813cd8a0b334189da285bb05af0b18b062502 before e4a87126c085b097d29e17e3b7647295bba8be7c; 904813cd8a0b334189da285bb05af0b18b062502 builds before 685e92934f11d5e215dad58813e2f9955ac2f436; 904813cd8a0b334189da285bb05af0b18b062502 builds before 4dc8484be3302d187274364820d3bef6c62bde32; from 904813cd8a0b334189da285bb05af0b18b062502 before b153cfe84b1340c69a13d0957665a2bfcf21239c; from 904813cd8a0b334189da285bb05af0b18b062502 before ea866cab12db1a2100b400a8b03569e5bc0ee29a; 904813cd8a0b334189da285bb05af0b18b062502 builds before 03f384bc0cb8d4a1301d4f5b0baef2d980258383 | CNA record |
References
- https://git.kernel.org/stable/c/f42217fa7d535e9ec4151f7971f06f6ea65e850a
- https://git.kernel.org/stable/c/c087749815379e9af2fdbeb08bfc33870b103958
- https://git.kernel.org/stable/c/e4a87126c085b097d29e17e3b7647295bba8be7c
- https://git.kernel.org/stable/c/685e92934f11d5e215dad58813e2f9955ac2f436
- https://git.kernel.org/stable/c/4dc8484be3302d187274364820d3bef6c62bde32
- https://git.kernel.org/stable/c/b153cfe84b1340c69a13d0957665a2bfcf21239c
- https://git.kernel.org/stable/c/ea866cab12db1a2100b400a8b03569e5bc0ee29a
- https://git.kernel.org/stable/c/03f384bc0cb8d4a1301d4f5b0baef2d980258383
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.