CVE-2026-43117

btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()

CVSS 9.1 CRITICALEPSS 0.4%

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.1EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

06 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

Linux · Linux

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References

https://git.kernel.org/stable/c/2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a https://git.kernel.org/stable/c/32372781d664a9b03c40343e96c29d0a6139f97d https://git.kernel.org/stable/c/4a7bab35fad5251c8cb738161152578cd83b6b9c https://git.kernel.org/stable/c/520e8b4bcf872a534a7bf61ccf880047642df296 https://git.kernel.org/stable/c/a85b46db143fda5869e7d8df8f258ccef5fa1719 https://git.kernel.org/stable/c/c09a7446aab5773f38d6abb25fce99b8e1dfbc97 https://git.kernel.org/stable/c/d110d7cdb045715c0b45b0dfd974525bb38f653d https://git.kernel.org/stable/c/e252db8ca2a01f82d472091f35d549b313278636