CyberRota Analysis
AI-GeneratedThe vulnerability in the Linux kernel affects the binfmt_elf_fdpic handler, allowing an unprivileged user to exploit crafted binaries containing multiple PT_INTERP entries. This can lead to memory leaks and persistent write denials on the affected files, potentially compromising system integrity. Organizations using affected Linux kernel versions should prioritize this vulnerability to mitigate risks associated with unauthorized access and system stability.
Original NVD Description
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").