CVE-2021-47171

MEDIUM

Linux Kernel 2.6.34-4.4.270 - Use-After-Free in smsc75xx_bind

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: net: usb: fix memory leak in smsc75xx_bind Syzbot reported memory leak in smsc75xx_bind(). The problem was is non-freed memory in case of errors after memory allocation. backtrace: [<ffffffff84245b62>] kmalloc include/linux/slab.h:556 [inline] [<ffffffff84245b62>] kzalloc include/linux/slab.h:686 [inline] [<ffffffff84245b62>] smsc75xx_bind+0x7a/0x334 drivers/net/usb/smsc75xx.c:1460 [<ffffffff82b5b2e6>] usbnet_probe+0x3b6/0xc30 drivers/net/usb/usbnet.c:1728

Scores

CVSS v3 5.5
EPSS 0.0024
EPSS Percentile 15.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-401
Status published
Products (19)
Linux/Linux < 2.6.34
Linux/Linux 2.6.34
Linux/Linux 4.14.235 - 4.14.*
Linux/Linux 4.19.193 - 4.19.*
Linux/Linux 4.4.271 - 4.4.*
Linux/Linux 4.9.271 - 4.9.*
Linux/Linux 5.10.42 - 5.10.*
Linux/Linux 5.12.9 - 5.12.*
Linux/Linux 5.13
Linux/Linux 5.4.124 - 5.4.*
... and 9 more
Published Mar 25, 2024
Tracked Since Feb 18, 2026