What’s Vulnerable › Vulnerabilities

CVE-2022-49815: erofs: fix missing xas_retry() in fscache mode

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-01 · updated 2026-06-17

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.

Affected products

• Linux kernel: from 5.19 before 6.0.10; 6.1-rc1, 6.1-rc2, 6.1-rc3, 6.1-rc4, 6.1-rc5 — fixed in 6.0.10

How to fix

Upgrade to a fixed version: Linux kernel 6.0.10. Check the vendor advisory for mitigations.

References

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

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