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Esben Haabendal

#42703of 53,633
6.2Total CVSS
Vulnerabilities · 1
PT-2024-11233
6.2
2021-06-18
Linux · Linux Kernel · CVE-2021-47224
**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** The issue is related to the Linux kernel's network component, specifically the ll temac module. It involves a use-after-free error 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. This occurs because the `skb` pointer is piggy-backed on the TX BD, and freeing the `skb` buffer while there are still fragments from the `skb` in use can cause problems. The solution involves ensuring that the `skb` is freed only when it is completely used. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.