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CVE-2021-47236

nvd nist
Published: May 21, 2024Modified: Apr 29, 2025

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5.5
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitability: 1.8 / Impact: 3.6
Source: NVD

Description

In the Linux kernel, the following vulnerability has been resolved: net: cdc_eem: fix tx fixup skb leak when usbnet transmit a skb, eem fixup it in eem_tx_fixup(), if skb_copy_expand() failed, it return NULL, usbnet_start_xmit() will have no chance to free original skb. fix it by free orginal skb in eem_tx_fixup() first, then check skb clone status, if failed, return NULL to usbnet.

Affected (13)

Products: Linux: Linux Kernel
Linux
1 product
Linux Kernel
Configuration A
13 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
From 2.6.30 to 4.4.274
Linux Kernel
From 4.10 to 4.14.238
Linux Kernel
From 4.15 to 4.19.196
Linux Kernel
From 4.20 to 5.4.128
Linux Kernel
From 4.5 to 4.9.274
Linux Kernel
From 5.11 to 5.12.13
Linux Kernel
From 5.5 to 5.10.46
Linux Kernel
Version 5.13 rc1
Linux Kernel
Version 5.13 rc2
Linux Kernel
Version 5.13 rc3
Linux Kernel
Version 5.13 rc4
Linux Kernel
Version 5.13 rc5
Linux Kernel
Version 5.13 rc6

Related CWEs

CWE-401
Missing Release of Memory after Effective Lifetime
The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.

References (16)

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch

Timeline

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