CVE-2026-43308
Received Received - Intake
Linux Kernel Btrfs Memory Corruption Bug

Publication date: 2026-05-08

Last updated on: 2026-05-08

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref() There is no need to BUG(), we can just return an error and log an error message.
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Meta Information
Published
2026-05-08
Last Modified
2026-05-08
Generated
2026-06-19
AI Q&A
2026-05-08
EPSS Evaluated
2026-06-18
NVD
CVE-2026-43308
EUVD
EUVD-2026-28578
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
linux linux_kernel *
linux kernel *
linux_kernel btrfs *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is in the Linux kernel's btrfs filesystem. It involves the kernel calling BUG() when encountering an unexpected delayed reference type in the function run_one_delayed_ref().

The fix changes this behavior so that instead of causing a kernel BUG() (which typically crashes or halts the kernel), the system will simply return an error and log an error message.

Impact Analysis

If the vulnerability is triggered, the Linux kernel could BUG(), which usually results in a kernel panic or crash, potentially causing system instability or downtime.

By fixing this issue to return an error instead of BUG(), the system becomes more stable and resilient to unexpected delayed reference types in btrfs, reducing the risk of crashes.

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