CVE - CVE-2021-47224

CVE-ID
CVE-2021-47224	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358 URL:https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358 MISC:https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47 URL:https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47 MISC:https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3 URL:https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3 MISC:https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b URL:https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b
Assigning CNA
kernel.org
Date Record Created
20240410	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240410)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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