CVE-2025-21988

MediumCVSS 5.5/10Last modified Jul 30, 2026

Description

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").

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

No affected versions have been published.

Timeline

Published
Apr 2, 2025
Last modified
Jul 30, 2026
NVD status
Modified

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CVE-2025-21988: Medium severity, CVSS 5.5 | Vulnix