CVE-2026-43117

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

Published: 5/6/2026 Last updated: 6/1/2026 Reserved: 5/1/2026

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.

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

Metrics

Version	Score	Severity	Vector String
3.1	9.1	Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (4)

Product	Vendor	Version
Linux	Linux	< 10.0.14393.8422
Linux	Linux	7 for 32-bit Systems Service Pack 1
Linux	Linux	6.4
Linux	Linux	< unspecified

CVE-2026-43117

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

Metrics

Opam packages affected (29)

Products affected (4)

References (16)