CVE-2025-21679

btrfs: add the missing error handling inside get_canonical_dev_path

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: add the missing error handling inside get_canonical_dev_path Inside function get_canonical_dev_path(), we call d_path() to get the final device path. But d_path() can return error, and in that case the next strscpy() call will trigger an invalid memory access. Add back the missing error handling for d_path().

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/d0fb5741932b831eded49bfaaf33353e96200d6d
https://git.kernel.org/stable/c/fe4de594f7a2e9bc49407de60fbd20809fad4192

Frequently Asked Questions

What is the severity of CVE-2025-21679?: CVE-2025-21679 has not yet been assigned a CVSS score.
How to fix CVE-2025-21679?: To fix CVE-2025-21679, 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-2025-21679 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-21679 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-2025-21679?: CVE-2025-21679 affects Linux Linux, Linux Linux.

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