Linux Kernel up to 7.2-rc2 net1080 net1080.c net1080_rx_fixup packet_len out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 7.2-rc2. This impacts the function net1080_rx_fixup of the file drivers/net/usb/net1080.c of the component net1080. Such manipulation of the argument packet_len leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2026-64547. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2-rc2 and classified as critical. Affected by this issue is the function net1080_rx_fixup of the file drivers/net/usb/net1080.c of the component net1080. The manipulation of the argument packet_len with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-64547 since 07/19/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/27/2026).

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5 or 7.2-rc3 eliminates this vulnerability. Applying the patch f42217fa7d535e9ec4151f7971f06f6ea65e850a/c087749815379e9af2fdbeb08bfc33870b103958/e4a87126c085b097d29e17e3b7647295bba8be7c/685e92934f11d5e215dad58813e2f9955ac2f436/4dc8484be3302d187274364820d3bef6c62bde32/b153cfe84b1340c69a13d0957665a2bfcf21239c/ea866cab12db1a2100b400a8b03569e5bc0ee29a/03f384bc0cb8d4a1301d4f5b0baef2d980258383 is able to eliminate this problem.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.97/6.18.40/7.1.5/7.2-rc3
Patch: f42217fa7d535e9ec4151f7971f06f6ea65e850a/c087749815379e9af2fdbeb08bfc33870b103958/e4a87126c085b097d29e17e3b7647295bba8be7c/685e92934f11d5e215dad58813e2f9955ac2f436/4dc8484be3302d187274364820d3bef6c62bde32/b153cfe84b1340c69a13d0957665a2bfcf21239c/ea866cab12db1a2100b400a8b03569e5bc0ee29a/03f384bc0cb8d4a1301d4f5b0baef2d980258383

Timelineinfo

07/19/2026 CVE reserved
07/27/2026 +8 days Advisory disclosed
07/27/2026 +0 days VulDB entry created
07/27/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-64547 (🔒)
GCVE (CVE): GCVE-0-2026-64547
GCVE (VulDB): GCVE-100-383612

Entryinfo

Created: 07/27/2026 23:31
Changes: 07/27/2026 23:31 (61)
Complete: 🔍
Cache ID: 216::103

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