CVE-2021-47501

MEDIUM5.5

i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc

Published May 24, 2024

Modified 8 months ago

Details

In the Linux kernel, the following vulnerability has been resolved:

i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc

When trying to dump VFs VSI RX/TX descriptors using debugfs there was a crash due to NULL pointer dereference in i40e_dbg_dump_desc. Added a check to i40e_dbg_dump_desc that checks if VSI type is correct for dumping RX/TX descriptors.

References

WEBhttps://git.kernel.org/stable/c/16431e442db248ecd8aa9457cf0a656f1885f56e WEBhttps://git.kernel.org/stable/c/23ec111bf3549aae37140330c31a16abfc172421 WEBhttps://git.kernel.org/stable/c/e5b7fb2198abc50058f1a29c395b004f76ab1c83 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2021-47501

CVSS Analysis

CVSS v3.1

5.5

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

5.5/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Ecosystems

Timeline

PublishedMay 24, 2024

ModifiedMay 4, 2025