CVE-2021-47548

Advisory lineage Upstream: 0 Downstream: 15
Analyzed
Published: 24 May 2024, 15:09
Last modified:11 May 2026, 13:56

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (cve.org)
EPSS Score
0.07% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 May 2024, 15:09
Published
Vulnerability first disclosed
11 May 2026, 13:56
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.07%• Percentile: 21%

Techniques & Countermeasures

  • CWE-129•Improper Validation of Array Index

    The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

Affected Systems

  • linux•linux

    ≥ 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca, < 948968f8747650447c8f21c9fdba0e1973be040b | ≥ 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca, < abbd5faa0748d0aa95d5191d56ff7a17a6275bd1 | ≥ 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca, < dd07f8971b81ad98cc754b179b331b57f35aa1ff | ≥ 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca, < 99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d | ≥ 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca, < 22519eff7df2d88adcc2568d86046ce1e2b52803 | ≥ 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca, < fc7ffa7f10b9454a86369405d9814bf141b30627 | ≥ 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca, < a66998e0fbf213d47d02813b9679426129d0d114 | 4.7

  • linux•linux_kernel

    < 4.9.292 | ≥ 4.10, < 4.14.257 | ≥ 4.15, < 4.19.220 | ≥ 4.20, < 5.4.164 | ≥ 5.5, < 5.10.84 | ≥ 5.11, < 5.15.7 | 5.16:rc1

References (7)