ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port() (Linux Linux)

CVE-2021-47548
CRITICAL 9.8

At a glance

Source
NVD
EPSS
EPSS 1.36 % · percentile 72 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

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.

Weaknesses (CWE)

  • CWE-129 — Improper Validation of Array Index

References

Scores

VersionScoreVectorScored by
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCISA-ADP
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca < 948968f8747650447c8f21c9fdba0e1973be040b ; affected 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca < abbd5faa0748d0aa95d5191d56ff7a17a6275bd1 ; affected 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca < dd07f8971b81ad98cc754b179b331b57f35aa1ff ; affected 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca < 99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d ; affected 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca < 22519eff7df2d88adcc2568d86046ce1e2b52803 ; affected 850bfa3b78ea8849fef78ed74f5f2ccf947db0ca < fc7ffa7f10b9454a86369405d9814bf141b30627
Linux · Linuxaffected 4.7 ; unaffected 0 < 4.7 ; unaffected 4.9.292 ≤ 4.9.* ; unaffected 4.14.257 ≤ 4.14.* ; unaffected 4.19.220 ≤ 4.19.* ; unaffected 5.4.164 ≤ 5.4.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD