4 commits

Author	SHA1	Message	Date
Andreas Kling	413db2d6d5	LibELF: Ignore PT_GNU_STACK headers ... We always map stacks R/W (never X), so we can just ignore this header as far as I understand.	2020-08-20 10:12:45 +02:00
Nico Weber	00f658b984	Lagom+LibELF: Add an ELF fuzzer, and tweak the code to survive a few minutes of fuzzing (#3071) ... If a buffer smaller than Elf32_Ehdr was passed to Image, header() would do an out-of-bounds read. Make parse() check for that. Make most Image methods assert that the image is_valid(). For that to work, set m_valid early in Image::parse() instead of only at its end. Also reorder a few things so that the fuzzer doesn't hit (valid) assertions, which were harmless from a security PoV but which still allowed userspace to crash the kernel with an invalid ELF file. Make dbgprintf()s configurable at run time so that the fuzzer doesn't produce lots of logspam.	2020-08-10 15:55:17 +02:00
Nico Weber	0586924bbd	LibELF+Lagom: Work towards getting LibELF in Lagom ... Mostly -Wformat fixes, some of which pointed out real (if benign) bugs.	2020-08-09 21:12:54 +02:00
Andrew Kaster	61acca223f	LibELF: Move validation methods to their own file ... These validate_elf_* methods really had no business being static methods of ELF::Image. Now that the ELF namespace exists, it makes sense to just move them to be free functions in the namespace.	2020-04-11 22:41:05 +02:00