CVEvulnerability
CVE-2023-54311
- Status
- Deferred
- Published
- 2025-12-30
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
ext4: fix deadlock when converting an inline directory in nojournal mode
In no journal mode, ext4_finish_convert_inline_dir() can self-deadlock
by calling ext4_handle_dirty_dirblock() when it already has taken the
directory lock. There is a similar self-deadlock in
ext4_incvert_inline_data_nolock() for data files which we'll fix at
the same time.
A simple reproducer demonstrating the problem:
mke2fs -Fq -t ext2 -O inline_data -b 4k /dev/vdc 64
mount -t ext4 -o dirsync /dev/vdc /vdc
cd /vdc
mkdir file0
cd file0
touch file0
touch file1
attr -s BurnSpaceInEA -V abcde .
touch supercalifragilisticexpialidocious
References
- https://git.kernel.org/stable/c/0b1c4357bb21d9770451a1bdb8d419ea10bada88 git.kernel.org
- https://git.kernel.org/stable/c/5f8b55136ad787aed2c184f7cb3e93772ae637a3 git.kernel.org
- https://git.kernel.org/stable/c/640c8c365999c6f23447ac766437236ad88317c5 git.kernel.org
- https://git.kernel.org/stable/c/665cc3ba50330049524c1d275bc840a8f28dde73 git.kernel.org
- https://git.kernel.org/stable/c/804de0c72cd473e186ca4e1f6287d45431b14e5a git.kernel.org
- https://git.kernel.org/stable/c/b4fa4768c9acff77245d672d855d2c88294850b1 git.kernel.org
- https://git.kernel.org/stable/c/f4ce24f54d9cca4f09a395f3eecce20d6bec4663 git.kernel.org