CVE-2026-64547
net: usb: net1080: validate packet_len before pad-byte access in rx_fixup
Description
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.
INFO
Published Date :
July 27, 2026, 9:17 p.m.
Last Modified :
July 27, 2026, 9:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64547
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Validate packet_len against skb->len before data access.
- Reject frames with packet_len >= skb->len.
- Update the Linux kernel to the latest version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64547.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64547 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64547
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64547 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64547 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 27, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '904813cd8a0b334189da285bb05af0b18b062502', 'lessThan': 'f42217fa7d535e9ec4151f7971f06f6ea65e850a', 'versionType': 'git'}, {'status': 'affected', 'version': '904813cd8a0b334189da285bb05af0b18b062502', 'lessThan': 'c087749815379e9af2fdbeb08bfc33870b103958', 'versionType': 'git'}, {'status': 'affected', 'version': '904813cd8a0b334189da285bb05af0b18b062502', 'lessThan': 'e4a87126c085b097d29e17e3b7647295bba8be7c', 'versionType': 'git'}, {'status': 'affected', 'version': '904813cd8a0b334189da285bb05af0b18b062502', 'lessThan': '685e92934f11d5e215dad58813e2f9955ac2f436', 'versionType': 'git'}, {'status': 'affected', 'version': '904813cd8a0b334189da285bb05af0b18b062502', 'lessThan': '4dc8484be3302d187274364820d3bef6c62bde32', 'versionType': 'git'}, {'status': 'affected', 'version': '904813cd8a0b334189da285bb05af0b18b062502', 'lessThan': 'b153cfe84b1340c69a13d0957665a2bfcf21239c', 'versionType': 'git'}, {'status': 'affected', 'version': '904813cd8a0b334189da285bb05af0b18b062502', 'lessThan': 'ea866cab12db1a2100b400a8b03569e5bc0ee29a', 'versionType': 'git'}, {'status': 'affected', 'version': '904813cd8a0b334189da285bb05af0b18b062502', 'lessThan': '03f384bc0cb8d4a1301d4f5b0baef2d980258383', 'versionType': 'git'}], 'programFiles': ['drivers/net/usb/net1080.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/usb/net1080.c'], 'defaultStatus': 'affected'}] Added Description 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. Added Reference https://git.kernel.org/stable/c/03f384bc0cb8d4a1301d4f5b0baef2d980258383 Added Reference https://git.kernel.org/stable/c/4dc8484be3302d187274364820d3bef6c62bde32 Added Reference https://git.kernel.org/stable/c/685e92934f11d5e215dad58813e2f9955ac2f436 Added Reference https://git.kernel.org/stable/c/b153cfe84b1340c69a13d0957665a2bfcf21239c Added Reference https://git.kernel.org/stable/c/c087749815379e9af2fdbeb08bfc33870b103958 Added Reference https://git.kernel.org/stable/c/e4a87126c085b097d29e17e3b7647295bba8be7c Added Reference https://git.kernel.org/stable/c/ea866cab12db1a2100b400a8b03569e5bc0ee29a Added Reference https://git.kernel.org/stable/c/f42217fa7d535e9ec4151f7971f06f6ea65e850a