Description of problem: using latest livecd-tools on flash disk media causes dosfslabel buffer overflow Version-Release number of selected component (if applicable): dosfstools-3.0.16-2.fc18.x86_64 livecd-tools-18.15-1.fc18.x86_64 How reproducible: always Steps to Reproduce: 1. mount usb flash 2. execute `livecd-iso-to-disk pm-test-day-live-f19-20130417-x86_64.iso /dev/sda1` #virt machine on /dev/vda Actual results: <snip> *** buffer overflow detected ***: /sbin/dosfslabel terminated ======= Backtrace: ========= /lib64/libc.so.6(__fortify_fail+0x37)[0x3da7b0a6b7] /lib64/libc.so.6[0x3da7b08830] /lib64/libc.so.6[0x3da7b07cb9] /lib64/libc.so.6(_IO_default_xsputn+0xdb)[0x3da7a78f1b] /lib64/libc.so.6(_IO_vfprintf+0xe8)[0x3da7a46b08] /lib64/libc.so.6(__vsprintf_chk+0x97)[0x3da7b07d57] /lib64/libc.so.6(__sprintf_chk+0x7d)[0x3da7b07c9d] /sbin/dosfslabel[0x404748] /sbin/dosfslabel[0x402988] /sbin/dosfslabel[0x4013fb] /lib64/libc.so.6(__libc_start_main+0xf5)[0x3da7a21a05] /sbin/dosfslabel[0x4015fd] ======= Memory map: ======== 00400000-0040c000 r-xp 00000000 fd:01 8077 /usr/sbin/dosfslabel 0060b000-0060c000 r--p 0000b000 fd:01 8077 /usr/sbin/dosfslabel 0060c000-0060d000 rw-p 0000c000 fd:01 8077 /usr/sbin/dosfslabel 0060d000-0060f000 rw-p 00000000 00:00 0 0080c000-0080d000 rw-p 0000c000 fd:01 8077 /usr/sbin/dosfslabel 024f5000-02516000 rw-p 00000000 00:00 0 [heap] 3da7600000-3da7620000 r-xp 00000000 fd:01 16246 /usr/lib64/ld-2.16.so 3da7820000-3da7821000 r--p 00020000 fd:01 16246 /usr/lib64/ld-2.16.so 3da7821000-3da7822000 rw-p 00021000 fd:01 16246 /usr/lib64/ld-2.16.so 3da7822000-3da7823000 rw-p 00000000 00:00 0 3da7a00000-3da7bad000 r-xp 00000000 fd:01 16247 /usr/lib64/libc-2.16.so 3da7bad000-3da7dad000 ---p 001ad000 fd:01 16247 /usr/lib64/libc-2.16.so 3da7dad000-3da7db1000 r--p 001ad000 fd:01 16247 /usr/lib64/libc-2.16.so 3da7db1000-3da7db3000 rw-p 001b1000 fd:01 16247 /usr/lib64/libc-2.16.so 3da7db3000-3da7db8000 rw-p 00000000 00:00 0 3da9e00000-3da9e15000 r-xp 00000000 fd:01 22867 /usr/lib64/libgcc_s-4.7.2-20121109.so.1 3da9e15000-3daa014000 ---p 00015000 fd:01 22867 /usr/lib64/libgcc_s-4.7.2-20121109.so.1 3daa014000-3daa015000 r--p 00014000 fd:01 22867 /usr/lib64/libgcc_s-4.7.2-20121109.so.1 3daa015000-3daa016000 rw-p 00015000 fd:01 22867 /usr/lib64/libgcc_s-4.7.2-20121109.so.1 7fe6483de000-7fe648e4c000 rw-p 00000000 00:00 0 7fe648e53000-7fe648e55000 rw-p 00000000 00:00 0 7fff54657000-7fff54678000 rw-p 00000000 00:00 0 [stack] 7fff546f4000-7fff546f6000 r-xp 00000000 00:00 0 [vdso] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] /usr/bin/livecd-iso-to-disk: line 546: 1003 Aborted /sbin/dosfslabel $dev LIVE </snip> Expected results: execution succeeds Additional info:
additional nvr information: glibc-2.16-30.fc18.x86_64
Same here (FC18, 64bit), can be reproduced on real hardware (USB-Stick) or file: $ dd if=/dev/zero of=./test-fat bs=512 count=200k $ mkdosfs -v -F 32 ./test-fat $ dosfslabel ./test-fat HELLO => Crash of dosfslabel with very similar symptoms...
The problem should be fixed in dosfstools-3.0.16-3 currently in updates-testing for f18. *** This bug has been marked as a duplicate of bug 948055 ***
Hi there, I tested with dosfstools-3.0.16-3.fc18 which is in official updates now. Does work for me as expected. Thanks!