CVE-2026-43308

btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()

MEDIUM
5.5
CVSS Score
Published: May 8, 2026 at 01:11 PM UTC
Updated: October 21, 2026 at 01:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.6.31 ≤ v < 6.19.62.6.315d4f98a28c7d334091c1b7744f48a1acdd2a4ae0
Vendor states this is fixed in 5549743e11c06da23cfa7712a994b9f1e69064c6 (fixed)
Vendor states this is fixed in c7d1d4ff56744074e005771aff193b927392d51f (fixed)
Vendor states this is fixed in 2.6.31 (unaffected)
Vendor states this is fixed in 6.12.114 (unaffected)
Vendor states this is fixed in 6.18.57 (unaffected)
Vendor states this is fixed in 6.19.6 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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