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CVE-2021-47548 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port() The if statement: if (port >= DSAF_GE_NUM) return; limits the value of port less than DSAF_GE_NUM (i.e., 8). However, if the value of port is 6 or 7, an array overflow could occur: port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off; because the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6). To fix this possible array overflow, we first check port and if it is greater than or equal to DSAF_MAX_PORT_NUM, the function returns.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
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URL Source(s) Tag(s)
CVE, kernel.org Patch 
CVE, kernel.org Patch 
CVE, kernel.org Patch 
CVE, kernel.org Patch 
CVE, kernel.org Patch 
CVE, kernel.org Patch 
CVE, kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-129 Improper Validation of Array Index CISA-ADP  

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47548
NVD Published Date:
05/24/2024
NVD Last Modified:
04/01/2025
Source:
kernel.org