CVE-2026-43117

EUVD-2026-27643
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 4%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
4.8 ≤
𝑥
< 6.6.136
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.83
linuxlinux_kernel
6.13 ≤
𝑥
< 6.18.24
linuxlinux_kernel
6.19 ≤
𝑥
< 6.19.14
linuxlinux_kernel
7.0:rc1
linuxlinux_kernel
7.0:rc2
linuxlinux_kernel
7.0:rc3
linuxlinux_kernel
7.0:rc4
linuxlinux_kernel
7.0:rc5
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
vulnerable
bookworm (security)
vulnerable
bullseye
vulnerable
bullseye (security)
vulnerable
forky
6.19.14-1
fixed
sid
7.0.3-1
fixed
trixie
vulnerable
trixie (security)
6.12.85-1
fixed
References
https://git.kernel.org/stable/c/2e4adfaec97ee053ad1bdfb5036845e66f7e0d8a
https://git.kernel.org/stable/c/32372781d664a9b03c40343e96c29d0a6139f97d
https://git.kernel.org/stable/c/a85b46db143fda5869e7d8df8f258ccef5fa1719
https://git.kernel.org/stable/c/c09a7446aab5773f38d6abb25fce99b8e1dfbc97
https://git.kernel.org/stable/c/d110d7cdb045715c0b45b0dfd974525bb38f653d