CVE-2021-47101

asix: fix uninit-value in asix_mdio_read()

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

Category

7.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.01%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56 patch
https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03 patch

Frequently Asked Questions

What is the severity of CVE-2021-47101?
CVE-2021-47101 has been scored as a high severity vulnerability.
How to fix CVE-2021-47101?
To fix CVE-2021-47101, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47101 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47101 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47101?
CVE-2021-47101 affects Linux Linux, Linux Linux.
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