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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-21988
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-04-02 13:15:43 UTC
Updated2026-07-30 06:22:01 UTC
DescriptionIn 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").

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ee4cdf7ba857a894ad1650d6ab77669cbbfa329e 62b9ad7e52d4777f7e775ee1f0ad2452f6041024 git Not specified
CNA Linux Linux affected ee4cdf7ba857a894ad1650d6ab77669cbbfa329e e25cec3b76aba47a49138d2162fc809c6cd49c9e git Not specified
CNA Linux Linux affected ee4cdf7ba857a894ad1650d6ab77669cbbfa329e e2d46f2ec332533816417b60933954173f602121 git Not specified
CNA Linux Linux affected 6.12 Not specified
CNA Linux Linux unaffected 6.12 semver Not specified
CNA Linux Linux unaffected 6.12.20 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.8 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/e25cec3b76aba47a49138d2162fc809c6cd49c9e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/62b9ad7e52d4777f7e775ee1f0ad2452f6041024 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e2d46f2ec332533816417b60933954173f602121 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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