Package: src:klibc
Version: 2.0.4-11
Severity: grave
Rebuilding the current version of klibc for amd64 adds a large amount
of padding to the .text and .rodata sections of klibc.so:
/lib/klibc-MiRPTuou9LIwcm_gDpcF7E1m-p8.so: file format elf64-x86-64
Sections:
Idx Name Size VMA LMA File off Algn
0 .text 0000d1ff 0000000000200200 0000000000200200 00000200 2**2
CONTENTS, ALLOC, LOAD, READONLY, CODE
1 .rodata 000031af 0000000000300000 0000000000300000 00100000 2**5
CONTENTS, ALLOC, LOAD, READONLY, DATA
2 .data.rel.ro 00000990 0000000000403660 0000000000403660 00103660 2**5
CONTENTS, ALLOC, LOAD, DATA
3 .data 00000140 0000000000404000 0000000000404000 00104000 2**5
CONTENTS, ALLOC, LOAD, DATA
4 .bss 000042f8 0000000000404140 0000000000404140 00104140 2**5
ALLOC
This results in an address conflict with all klibc binaries and an
immediate crash when klibc jumps to the start of the binary.
Other architectures might also be affected.
Ben.
-- System Information:
Debian Release: buster/sid
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500,
'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.17.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8),
LANGUAGE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
