CVE-2021-46991

i40e: Fix use-after-free in i40e_client_subtask()

Description

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix use-after-free in i40e_client_subtask() Currently the call to i40e_client_del_instance frees the object pf->cinst, however pf->cinst->lan_info is being accessed after the free. Fix this by adding the missing return. Addresses-Coverity: ("Read from pointer after free")

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.01%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 patch
https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 patch
https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 patch
https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 patch
https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323 patch
https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 patch

Frequently Asked Questions

What is the severity of CVE-2021-46991?
CVE-2021-46991 has been scored as a high severity vulnerability.
How to fix CVE-2021-46991?
To fix CVE-2021-46991, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-46991 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-46991 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-46991?
CVE-2021-46991 affects Linux Linux, Linux Linux.
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