CVE-2025-21988
Critical
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").
SeverityCritical
CVSS9.8
Exploit probability—
Product
Linux Kernel
PublishedApr 2, 2025
First seenApr 2, 2025
How to fix
Update
- linux linux_kernel6.12.20, 6.13.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.12 ≤ v < 6.12.20, 6.13 ≤ v < 6.13.8 | 6.12.20, 6.13.8 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.