linux/fs/ntfs/ea.c, branch masterMirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=master2026-03-16T11:27:40Zntfs: harden ntfs_listxattr against EA entries2026-03-16T11:27:40ZHyunchul Leehyc.lee@gmail.com2026-03-09T07:40:09Zurn:sha1:e6a95c5a8066b4d6a74651f89612f13ed1a03fe6
Validate every EA entry only if the buffer length is required to prevent
large memory allocation.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
ntfs: harden ntfs_ea_lookup against malformed EA entries2026-03-16T11:27:38ZHyunchul Leehyc.lee@gmail.com2026-03-09T07:06:46Zurn:sha1:c451d34ae14201c2bb40652bf74072a79ff82f7d
Validate p_ea->ea_name_length tightly, and the used entry size
for every EA.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
ntfs: check $EA query-length in ntfs_ea_get2026-03-16T11:27:36ZHyunchul Leehyc.lee@gmail.com2026-03-09T07:06:06Zurn:sha1:10993e525b1ee81cbe02a8ca7d0005712f6b3d82
if ea_info_qlen exceeds all_ea_size, OOB can happen.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
ntfs: validate WSL EA payload sizes2026-03-16T11:27:34ZHyunchul Leehyc.lee@gmail.com2026-03-09T04:06:51Zurn:sha1:a5325419e9fb086f79334723a54481336dc9d561
Enforce the exact-size reads for $LXUID, $LXGID, $LXMOD, $LXDEV.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
ntfs: fix WSL ea restore condition2026-03-16T11:27:30ZHyunchul Leehyc.lee@gmail.com2026-03-11T23:36:24Zurn:sha1:a73258681279bceb4e9210d86204bae14d3ea795
Use NTFS_VOL_GID(not NTFS_VOL_UID) for restoring the gid, and call
ntfs_ea_get_wsl_inode() only when $EA_INFORMATION exists.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
ntfs: add missing newlines to pr_err() messages2026-03-10T08:52:13ZWoody Suwalskiterraluna977@gmail.com2026-03-10T08:50:57Zurn:sha1:ea3566a3fa235cd0325b2bedf91ceec65073004b
There is an inconsistent use of pr_err() statements in the current code.
Many error messages are missing the \n termination, what results in the
messages being printed with a delay, only after a next printk() line is
printed. It prevents relying on printk() to monitor the driver errors.
This patch is modifying only text messages, no functional change.
Signed-off-by: Woody Suwalski <terraluna977@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
ntfs: Fix null pointer dereference2026-02-26T09:26:00ZEthan Tidmoreethantidmore06@gmail.com2026-02-25T22:24:53Zurn:sha1:40c31f0563ec10e5b112be35e2e003f8ce4afe98
The variable ctx can be null and once confirmed to be null in its error
path goes to label err_out. Once there it can be immediately dereferenced
by the function ntfs_attr_put_search_ctx() which has no null pointer check.
Detected by Smatch:
fs/ntfs/ea.c:687 ntfs_new_attr_flags() error:
we previously assumed 'ctx' could be null (see line 577)
Add null pointer check before running ntfs_attr_put_search_ctx() in
error path.
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
ntfs: add reparse and ea operations2026-02-19T12:50:54ZNamjae Jeonlinkinjeon@kernel.org2026-02-13T01:45:36Zurn:sha1:fc053f05ca282a5e760b41f6560ac835c4e28037
Implement support for Extended Attributes and Reparse Points, enabling
Posix ACL support and, and compatibility with Windows Subsystem for
Linux (WSL) metadata.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>