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Vulnerabilities CVE-2025-21988

CVE-2025-21988

Critical
Open
TLP:CLEAR

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

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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").

Details

CVSS Score
9.8
EPSS Score
0.37%

29.3th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Apr 2, 2025
Last Modified
Aug 5, 2026
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