PT-2026-65222 · Linux · Linux
CVE-2026-64547
·
Published
2026-07-27
·
Updated
2026-07-27
None
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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.
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Related Identifiers
Affected Products
Linux