CVE-2021-47171

net: usb: fix memory leak in smsc75xx_bind

MEDIUM

5.5

CVSS Score

Published: March 25, 2024 at 09:16 AM UTC

Updated: June 17, 2026 at 04:16 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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

Affected

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

Linux Kernel · Linux

95%

2.6.34 ≤ v < 4.14.2352.6.34 ≤ v < 4.19.1932.6.34 ≤ v < 4.4.2712.6.34 ≤ v < 4.9.2712.6.34 ≤ v < 5.10.422.6.34 ≤ v < 5.12.92.6.34 ≤ v < 5.132.6.34 ≤ v < 5.4.1244.10 ≤ v < 4.14.2354.15 ≤ v < 4.19.1934.20 ≤ v < 5.4.1244.5 ≤ v < 4.9.2715.11 ≤ v < 5.12.95.5 ≤ v < 5.10.422.6.34d0cad871703b898a442e4049c532ec39168e5b57

Vendor states this is fixed in 200dbfcad8011e50c3cec269ed7b980836eeb1fa (fixed)

Vendor states this is fixed in 22c840596af0c09068b6cf948616e6496e59e07f (fixed)

Vendor states this is fixed in 46a8b29c6306d8bbfd92b614ef65a47c900d8e70 (fixed)

Vendor states this is fixed in 635ac38b36255d3cfb8312cf7c471334f4d537e0 (fixed)

Vendor states this is fixed in 70c886ac93f87ae7214a0c69151a28a8075dd95b (fixed)

Vendor states this is fixed in 9e6a3eccb28779710cbbafc4f4258d92509c6d07 (fixed)

Vendor states this is fixed in 9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc (fixed)

Vendor states this is fixed in b95fb96e6339e34694dd578fb6bde3575b01af17 (fixed)

Vendor states this is fixed in 2.6.34 (unaffected)

Vendor states this is fixed in 4.14.235 (unaffected)

Vendor states this is fixed in 4.19.193 (unaffected)

Vendor states this is fixed in 4.4.271 (unaffected)