| Message ID | 20211129135211.1114466-1-d-tatianin@yandex-team.ru (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v1] hw/smbios: verify header type for file before using it | expand |
On Mon, 29 Nov 2021 16:52:11 +0300 Daniil Tatianin <d-tatianin@yandex-team.ru> wrote: here should be more verbose description of the issue preferably with a way to reproduce it. and what/why patch does what it does. > Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru> > --- > hw/smbios/smbios.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c > index 7397e56737..c55f77368a 100644 > --- a/hw/smbios/smbios.c > +++ b/hw/smbios/smbios.c > @@ -1163,6 +1163,12 @@ void smbios_entry_add(QemuOpts *opts, Error **errp) > return; > } > > + if (header->type > SMBIOS_MAX_TYPE) { > + error_setg(errp, > + "invalid header type %d!", header->type); 3.0 spec says that types over 127 are valid and for use by OEM/etc, but QEMU doesn't support anything over 127 due to limited size of have_fields_bitmap. So I'd rephrase it as "unsupported header type" > + return; > + } > + > if (test_bit(header->type, have_fields_bitmap)) { > error_setg(errp, > "can't load type %d struct, fields already specified!",
diff --git a/hw/smbios/smbios.c b/hw/smbios/smbios.c index 7397e56737..c55f77368a 100644 --- a/hw/smbios/smbios.c +++ b/hw/smbios/smbios.c @@ -1163,6 +1163,12 @@ void smbios_entry_add(QemuOpts *opts, Error **errp) return; } + if (header->type > SMBIOS_MAX_TYPE) { + error_setg(errp, + "invalid header type %d!", header->type); + return; + } + if (test_bit(header->type, have_fields_bitmap)) { error_setg(errp, "can't load type %d struct, fields already specified!",
Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru> --- hw/smbios/smbios.c | 6 ++++++ 1 file changed, 6 insertions(+)