Resizing a FAT file system crashes in libparted/fs/r/fat/count.c flag_traverse_dir() if the length of any path name in the file system overflows the 512 byte file_name local buffer. Increase buffer to 4096, PATH_MAX on Linux.
Reported in https://bugzilla.gnome.org/show_bug.cgi?id=762448 --- NEWS | 3 +++ libparted/fs/r/fat/count.c | 2 +- 2 files changed, 4 insertions(+), 1 deletions(-) diff --git a/NEWS b/NEWS index 96135ed..d7483b8 100644 --- a/NEWS +++ b/NEWS @@ -4,6 +4,9 @@ GNU parted NEWS -*- outline -*- ** Bug Fixes + libparted-fs-resize: Prevent crash resizing FAT file systems with very + deep directories with path names over 512 bytes long. + Use 512b sector size when communicating with device-mapper. Fixes problems with partitions being created too small on dm devices with sector sizes > 5121b diff --git a/libparted/fs/r/fat/count.c b/libparted/fs/r/fat/count.c index 7949e47..a5837c0 100644 --- a/libparted/fs/r/fat/count.c +++ b/libparted/fs/r/fat/count.c @@ -219,7 +219,7 @@ flag_traverse_dir (FatTraverseInfo* trav_info) { PedFileSystem* fs = trav_info->fs; FatDirEntry* this_entry; FatTraverseInfo* subdir_trav_info; - char file_name [512]; + char file_name [4096]; char* file_name_start; FatCluster first_cluster; PedSector size; -- 1.7.1
