CVE-2025-21988

MEDIUM
2025-04-02 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Linux Denial Of Service Linux Kernel Redhat Suse
5.5
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 18:34 vuln.today
Patch Released
Mar 28, 2026 - 18:34 nvd
Patch available
CVE Published
Apr 02, 2025 - 13:15 nvd
MEDIUM 5.5

DescriptionNVD

In the Linux kernel, the following vulnerability has been resolved:

fs/netfs/read_collect: add to next->prev_donated

If multiple subrequests donate data to the same "next" request (depending on the subrequest completion order), each of them would overwrite the prev_donated field, causing data corruption and a BUG() crash ("Can't donate prior to front").

AnalysisAI

In the Linux kernel, the following vulnerability has been resolved: fs/netfs/read_collect: add to next->prev_donated If multiple subrequests donate data to the same "next" request (depending on the. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

Technical ContextAI

In the Linux kernel, the following vulnerability has been resolved: fs/netfs/read_collect: add to next->prev_donated If multiple subrequests donate data to the same "next" request (depending on the subrequest completion order), each of them would overwrite the prev_donated field, causing data corruption and a BUG() crash ("Can't donate prior to front"). Affected products include: Linux Linux Kernel.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Vendor StatusVendor

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CVE-2025-21988 vulnerability details – vuln.today
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