Re: [PATCH] module: validate string table section types

[Petr Pavlu <petr.pavlu@suse.com>]

On 7/8/26 3:21 AM, Thiébaud Weksteen wrote:
> In elf_validity_cache_sechdrs, section sizes and offsets are validated,
> unless the section type is SHT_NULL or SHT_NOBITS.
> 
> Later, elf_validity_cache_secstrings and elf_validity_cache_index_str
> access the section name table (.shstrtab) and symbol string table
> (.strtab) headers without first ensuring that their types are
> SHT_STRTAB. If a section type is SHT_NULL or SHT_NOBITS, sh_offset has
> not been validated and may reference out-of-bounds memory when
> dereferenced in elf_validity_cache_secstrings or
> elf_validity_cache_strtab.
> 
> Validate that both string section headers are of type SHT_STRTAB before
> caching them.
> 
> Signed-off-by: Thiébaud Weksteen <tweek@google.com>

I've queued the patch on modules-next for v7.3-rc1.

-- 
Thanks,
Petr