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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities
NOTICE UPDATED - April, 25th 2024

NIST has updated the NVD program announcement page with additional information regarding recent concerns and the temporary delays in enrichment efforts.

CVE-2021-47013 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send In emac_mac_tx_buf_send, it calls emac_tx_fill_tpd(..,skb,..). If some error happens in emac_tx_fill_tpd(), the skb will be freed via dev_kfree_skb(skb) in error branch of emac_tx_fill_tpd(). But the freed skb is still used via skb->len by netdev_sent_queue(,skb->len). As i observed that emac_tx_fill_tpd() haven't modified the value of skb->len, thus my patch assigns skb->len to 'len' before the possible free and use 'len' instead of skb->len later.


Severity

 


CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  N/A
NVD assessment not yet provided.


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/16d8c44be52e3650917736d45f5904384a9da834
https://git.kernel.org/stable/c/55fcdd1258faaecca74b91b88cc0921f9edd775d
https://git.kernel.org/stable/c/6d72e7c767acbbdd44ebc7d89c6690b405b32b57
https://git.kernel.org/stable/c/8c06f34785068b87e2b560534c77c163d6c6dca7
https://git.kernel.org/stable/c/9dc373f74097edd0e35f3393d6248eda8d1ba99d
https://git.kernel.org/stable/c/c7f75d11fe72913d2619f97b2334b083cd7bb955
https://git.kernel.org/stable/c/dc1b438a35773d030be0ee80d9c635c3e558a322
https://git.kernel.org/stable/c/e407495ba6788a67d1bd41714158c079e340879b

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47013
NVD Published Date:
02/28/2024
NVD Last Modified:
02/28/2024
Source:
kernel.org