CVE-2025-21988

Published: Apr 2, 2025

Modified: May 11, 2026

PUBLISHED

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").

Vendor	Product	Versions
Linux	Linux	affected `ee4cdf7ba857a894ad1650d6ab77669cbbfa329e - < 62b9ad7e52d4777f7e775ee1f0ad2452f6041024` affected `ee4cdf7ba857a894ad1650d6ab77669cbbfa329e - < e25cec3b76aba47a49138d2162fc809c6cd49c9e` affected `ee4cdf7ba857a894ad1650d6ab77669cbbfa329e - < e2d46f2ec332533816417b60933954173f602121`
Linux	Linux	affected `6.12` unaffected `0 - < 6.12` unaffected `6.12.20 - <= 6.12.` unaffected `6.13.8 - <= 6.13.` unaffected `6.14 - <= *`

References

https://git.kernel.org/stable/c/62b9ad7e52d4777f7e775ee1f0ad2452f6041024

https://git.kernel.org/stable/c/e25cec3b76aba47a49138d2162fc809c6cd49c9e

https://git.kernel.org/stable/c/e2d46f2ec332533816417b60933954173f602121

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CVE-2025-21988

Description

Affected Products

References