CVE-2025-39800
High
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: abort transaction on unexpected eb generation at btrfs_copy_root() If we find an unexpected generation for the extent buffer we are cloning at btrfs_copy_root(), we just WARN_ON() and don't error out and abort the transaction, meaning we allow to persist metadata with an unexpected generation. Instead of warning only, abort the transaction and return -EUCLEAN.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedSep 15, 2025
First seenSep 15, 2025
How to fix
Update
- linux linux_kernel6.1.149, 6.6.103, 6.12.44, 6.16.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.29 ≤ v < 6.1.149, 6.2 ≤ v < 6.6.103, 6.7 ≤ v < 6.12.44, 6.13 ≤ v < 6.16.4 | 6.1.149, 6.6.103, 6.12.44, 6.16.4 |
| debian debian_linux | 11.0 | — |
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