CVE-2023-53068

net: usb: lan78xx: Limit packet length to skb->len

MEDIUM
5.5
CVSS Score
Published: May 2, 2025 at 03:55 PM UTC
Updated: June 17, 2026 at 06:44 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: net: usb: lan78xx: Limit packet length to skb->len Packet length retrieved from descriptor may be larger than the actual socket buffer length. In such case the cloned skb passed up the network stack will leak kernel memory contents. Additionally prevent integer underflow when size is less than ETH_FCS_LEN.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.3 ≤ v < 6.1.224.3 ≤ v < 6.2.94.3 ≤ v < 6.36.2 ≤ v < 6.2.94.355d7de9de6c30adce8d675c7ce513e283829c2ff6.3 rc16.3 rc26.3 rc3
Vendor states this is fixed in 44b9ed73369fc5ec85dd2ee487e986301792a82d (fixed)
Vendor states this is fixed in 7f247f5a2c18b3f21206cdd51193df4f38e1b9f5 (fixed)
Vendor states this is fixed in 83de34967473ed31d276381373713cc2869a42e5 (fixed)
Vendor states this is fixed in 4.3 (unaffected)
Vendor states this is fixed in 6.1.22 (unaffected)
Vendor states this is fixed in 6.2.9 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/44b9ed73369fc5ec85dd2ee487e986301792a82d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7f247f5a2c18b3f21206cdd51193df4f38e1b9f5
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/83de34967473ed31d276381373713cc2869a42e5

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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