CVE-2022-49815

MEDIUM

Description

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

erofs: fix missing xas_retry() in fscache mode

The xarray iteration only holds the RCU read lock and thus may encounter
XA_RETRY_ENTRY if there's process modifying the xarray concurrently.
This will cause oops when referring to the invalid entry.

Fix this by adding the missing xas_retry(), which will make the
iteration wind back to the root node if XA_RETRY_ENTRY is encountered.

CVSS v3 vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected routers (1)

Vendor	Model	Matched via	Affected versions	Fixed in	Patch?
Ubiquiti	Ubiquiti EdgeRouter X	—	—	—	No

External references

• NIST NVD
• MITRE CVE