CVE-2026-68151

In the Linux kernel, the following vulnerability has been resolved:

binfmt_elf_fdpic: only honour the first PT_INTERP

The program header scan handles PT_INTERP from a switch nested in the

scan loop, so its break leaves the switch and not the loop. A binary

carrying more than one PT_INTERP runs the case again and overwrites both

interpreter_name and interpreter. The previous name allocation leaks and

so does the previous interpreter reference, along with the write denial

open_exec() took on it. The denial is never released, so the file stays

unwritable for as long as the system runs.

An unprivileged caller reaches this with a crafted binary and repeats it

at will. binfmt_elf stops at the first PT_INTERP. Do the same here.

The flaw dates back to the driver's introduction in the pre-git history

tree introduced in v2.6.11 by 91808d6ebe39 ("[PATCH] FRV: Add FDPIC ELF

binary format driver").