CVE-2022-49815

erofs: fix missing xas_retry() in fscache mode

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.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/dbc98fe99e17ed18f2f272d5fe880d844b1c68c3
https://git.kernel.org/stable/c/37020bbb71d911431e16c2c940b97cf86ae4f2f6

Frequently Asked Questions

What is the severity of CVE-2022-49815?: CVE-2022-49815 has not yet been assigned a CVSS score.
How to fix CVE-2022-49815?: To fix CVE-2022-49815, 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-2022-49815 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49815 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-2022-49815?: CVE-2022-49815 affects Linux Linux, Linux Linux.

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