CVE-2023-54185

In the Linux kernel, the following vulnerability has been resolved: btrfs: remove BUG_ON()'s in add_new_free_space() At add_new_free_space() we have these BUG_ON()'s that are there to deal with any failure to add free space to the in memory free space cache. Such failures are mostly -ENOMEM that should be very rare. However there's no need to have these BUG_ON()'s, we can just return any error to the caller and all callers and their upper call chain are already dealing with errors. So just make add_new_free_space() return any errors, while removing the BUG_ON()'s, and returning the total amount of added free space to an optional u64 pointer argument.

Package Linux Kernel
Published 2025-12-30
Last modified 2026-04-15
Patch available
Yes

Affected versions

Linux kernel versions 2.6.29 and later are affected. Fixed in 6.1.45, 6.4.10, 6.5 and their respective stable series.

Affected from
≥ 2.6.29
Fixed in
✓ 6.1.45 6.1.x ✓ 6.4.10 6.4.x ✓ 6.5

References

The following references provide additional information about CVE-2023-54185 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2023-54185?

    CVE-2023-54185 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.29 onward and has been patched in 6.1.45, 6.4.10 and 6.5. CVE-2023-54185 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2023-54185?

    Yes — CVE-2023-54185 has been patched. Fixed versions include 6.1.45, 6.4.10 and 6.5. If you are running Linux kernel 2.6.29 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2023-54185 actively exploited?

    No — CVE-2023-54185 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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