AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-47224

MEDIUM · CVSS 6.2 EPSS 0.23%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2024-05-21 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.2. It affects Linux.

CVE
CVE-2021-47224
Severity
MEDIUM
CVSS
6.2
EPSS
0.23%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: net: ll_temac: Make sure to free skb when it is completely used With the skb pointer piggy-backed on the TX BD, we have a simple and efficient way to free the skb buffer when the frame has been transmitted. But in order to avoid freeing the skb while there are still fragments from the skb in use, we need to piggy-back on the TX BD of the skb, not the first. Without this, we are doing use-after-free on the DMA side, when the first BD of a multi TX BD packet is seen as completed in xmit_done, and the remaining BDs are still being processed.

Related CVEs

Other vulnerabilities affecting the same vendor(s)