CVE-2021-47101

HighCVSS 7.1/10Last modified Jun 17, 2026

Description

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

asix: fix uninit-value in asix_mdio_read()

asix_read_cmd() may read less than sizeof(smsr) bytes and in this case smsr will be uninitialized.

Fail log: BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 BUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497 asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness enumeration

CWE-908

Affected software

VendorProductVersions
LinuxLinux>= d9fe64e511144c1ee7d7555b4111f09dde9692ef, < d259f621c85949f30cc578cac813b82bb5169f56; >= d9fe64e511144c1ee7d7555b4111f09dde9692ef, < 8035b1a2a37a29d8c717ef84fca8fe7278bc9f03
LinuxLinux4.9

References

Timeline

Published
Mar 4, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2021-47101: High severity, CVSS 7.1 | Vulnix