CVE-2026-43117
Critical
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() If overlay is used on top of btrfs, dentry->d_sb translates to overlay's super block and fsid assignment will lead to a crash. Use file_inode(file)->i_sb to always get btrfs_sb.
SeverityCritical
CVSS9.1
Exploit probability—
Product
Linux Kernel
PublishedMay 6, 2026
First seenMay 6, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel6.6.136, 6.12.83, 6.18.24, 6.19.14 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.8 ≤ v < 6.6.136, 6.7 ≤ v < 6.12.83, 6.13 ≤ v < 6.18.24, 6.19 ≤ v < 6.19.14, 7.0 | 6.6.136, 6.12.83, 6.18.24, 6.19.14 |
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