Medium 5.5Published May 8, 2026

CVE-2026-43308btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()

Updated under an hour ago (Oct 27, 2026, 3:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0 builds before 0e77f1c8ebf5b1f858b5ac613baceb79919d6d3f; from 5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0 before a5ac87aabdedd31e832b40466605e83f428136aa; from 5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0 before 6ad4caadc6343c3d7987bf3211f15d66135c4c42; from 5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0 before 5549743e11c06da23cfa7712a994b9f1e69064c6; from 5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0 before c7d1d4ff56744074e005771aff193b927392d51f	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.31 before 6.19.6	NVD

References

References

https://git.kernel.org/stable/c/0e77f1c8ebf5b1f858b5ac613baceb79919d6d3f
https://git.kernel.org/stable/c/a5ac87aabdedd31e832b40466605e83f428136aa
https://git.kernel.org/stable/c/6ad4caadc6343c3d7987bf3211f15d66135c4c42
https://git.kernel.org/stable/c/5549743e11c06da23cfa7712a994b9f1e69064c6	patch
https://git.kernel.org/stable/c/c7d1d4ff56744074e005771aff193b927392d51f	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.