Riskcovery

CVE-2025-21988

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

State
Published
Severity
9.8 Critical
Published
Apr 2, 2025
Updated
Aug 5, 2026
Reserved
Dec 29, 2024

Read the record on cve.org

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").

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • ee4cdf7ba857a894ad1650d6ab77669cbbfa329e to before 62b9ad7e52d4777f7e775ee1f0ad2452f6041024Affected
  • ee4cdf7ba857a894ad1650d6ab77669cbbfa329e to before e25cec3b76aba47a49138d2162fc809c6cd49c9eAffected
  • ee4cdf7ba857a894ad1650d6ab77669cbbfa329e to before e2d46f2ec332533816417b60933954173f602121Affected
LinuxLinux
  • 6.12Affected
  • before 6.12Not affected
  • 6.12.20 through 6.12.*Not affected
  • 6.13.8 through 6.13.*Not affected
  • 6.14 and laterNot affected

References

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