PT-2025-35981 · Drbd +2 · Drbd +2

Published

2025-09-04

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Updated

2025-10-10

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CVE-2025-38708

None

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Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description The Linux kernel contains a flaw within the DRBD module related to handling write conflicts when 
two-primaries
is enabled. A missing 
kref get
in the 
handle write conflicts
function can lead to premature destruction of the device and a use-after-free condition, potentially resulting in kernel crashes. The issue occurs when handling "superseeded" writes. The vulnerability is unlikely to be triggered in real-world scenarios, as it primarily affects test cases or configurations where concurrent writes are not properly managed by upper layers like cluster file systems or virtualization environments. In DRBD 9, the handling of write conflicts has been modified to disconnect hard instead of attempting to resolve them, shifting the responsibility for managing concurrent writes to the upper layers.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2025-38708
DSA-6009-1
ECHO-9918-BBB2-E70E
MGASA-2025-0234
MGASA-2025-0235

Affected Products

Drbd
Debian
Linux Kernel