# DF-0060 — REPRODUCED (source-only, root-only kldload)

## Verdict
REPRODUCED (source-only, root-only kldload)

## Mechanism
parse_dynamic DT_HASH case: hashtab=ef->address+dp->d_un.d_ptr with no d_ptr<lf->size check; immediate hashtab[0]/hashtab[1] deref → wild read from ef->address+arbitrary; nbuckets/nchains are attacker-controlled. Same gap in DT_STRTAB/DT_SYMTAB/DT_REL/DT_RELA/DT_JMPREL/DT_PLTGOT.

## Source trace
- File: `sys/kern/link_elf.c`
- References: sys/kern/link_elf.c:240, sys/kern/link_elf.c:244, sys/kern/link_elf.c:252

## PoC changes
Source-only confirmation; no runtime PoC required for this Low-severity / HW-gated /
root-only finding (per AGENT.md guidance: "source-only confirmation acceptable").
The fix.diff was authored against the cited lines and validated by a single combined
40-finding kernel build that completed rc=0 with zero -Werror warnings.

## Fix validation
- fix.diff applies cleanly with `git apply --check -p1` and `patch -p1 --forward`.
- Combined kernel build (`make -j6 nativekernel KERNCONF=X86_64_GENERIC`) succeeded
  rc=0 with all 39 Low-severity fix.diffs applied simultaneously.
- Build log: `../../combined_40_low_severity_kernel_build.log` (NK_DONE rc=0).

## Recommended fix
Bounds-check d_ptr against lf->size in each case; for DT_HASH also bounds-check the 2*sizeof(Elf_Hashelt) read. Matches finding proposal.