Namjae Jeon 6b64974e02 exfat: check if filename entries exceeds max filename length ... commit d42334578e upstream. exfat_extract_uni_name copies characters from a given file name entry into the 'uniname' variable. This variable is actually defined on the stack of the exfat_readdir() function. According to the definition of the 'exfat_uni_name' type, the file name should be limited 255 characters (+ null teminator space), but the exfat_get_uniname_from_ext_entry() function can write more characters because there is no check if filename entries exceeds max filename length. This patch add the check not to copy filename characters when exceeding max filename length. Cc: stable@vger.kernel.org Cc: Yuezhang Mo <Yuezhang.Mo@sony.com> Reported-by: Maxim Suhanov <dfirblog@gmail.com> Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> [Harshit: backport to 5.15.y] Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-08-26 14:23:37 +02:00
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Kconfig	exfat: Improve wording of EXFAT_DEFAULT_IOCHARSET config option	2020-06-09 16:48:39 +09:00
Makefile	exfat: add Kconfig and Makefile	2020-03-05 21:00:40 -05:00
balloc.c	exfat: use kvmalloc_array/kvfree instead of kmalloc_array/kfree	2023-08-11 15:13:56 +02:00
cache.c	exfat: fix use of uninitialized spinlock on error path	2020-10-07 14:27:13 +09:00
dir.c	exfat: check if filename entries exceeds max filename length	2023-08-26 14:23:37 +02:00
exfat_fs.h	exfat: redefine DIR_DELETED as the bad cluster number	2023-03-10 09:39:58 +01:00
exfat_raw.h	exfat: fix shift-out-of-bounds in exfat_fill_super()	2021-02-22 09:55:13 +09:00
fatent.c	exfat: check if cluster num is valid	2022-06-06 08:43:37 +02:00
file.c	exfat: fix inode->i_blocks for non-512 byte sector size device	2023-03-10 09:39:58 +01:00
inode.c	exfat: fix inode->i_blocks for non-512 byte sector size device	2023-03-10 09:39:58 +01:00
misc.c	exfat: write multiple sectors at once	2020-08-12 08:31:11 +09:00
namei.c	exfat: fix inode->i_blocks for non-512 byte sector size device	2023-03-10 09:39:58 +01:00
nls.c	exfat: Avoid allocating upcase table using kcalloc()	2020-12-22 12:31:17 +09:00
super.c	exfat: fix inode->i_blocks for non-512 byte sector size device	2023-03-10 09:39:58 +01:00