From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: USB: core: prevent malicious bNumInterfaces overflow From: Peter Chen Message-Id: <20171213012742.GA6829@b29397-desktop> Date: Wed, 13 Dec 2017 09:27:42 +0800 To: Alan Stern Cc: Greg KH , Andrey Konovalov , USB list List-ID: T24gVHVlLCBEZWMgMTIsIDIwMTcgYXQgMDI6MjU6MTNQTSAtMDUwMCwgQWxhbiBTdGVybiB3cm90 ZToKPiBBIG1hbGljaW91cyBVU0IgZGV2aWNlIHdpdGggY3JhZnRlZCBkZXNjcmlwdG9ycyBjYW4g Y2F1c2UgdGhlIGtlcm5lbAo+IHRvIGFjY2VzcyB1bmFsbG9jYXRlZCBtZW1vcnkgYnkgc2V0dGlu ZyB0aGUgYk51bUludGVyZmFjZXMgdmFsdWUgdG9vCj4gaGlnaCBpbiBhIGNvbmZpZ3VyYXRpb24g ZGVzY3JpcHRvci4gIEFsdGhvdWdoIHRoZSB2YWx1ZSBpcyBhZGp1c3RlZAo+IGR1cmluZyBwYXJz aW5nLCB0aGlzIGFkanVzdG1lbnQgaXMgc2tpcHBlZCBpbiBvbmUgb2YgdGhlIGVycm9yIHJldHVy bgo+IHBhdGhzLgo+IAo+IFRoaXMgcGF0Y2ggcHJldmVudHMgdGhlIHByb2JsZW0gYnkgc2V0dGlu ZyBiTnVtSW50ZXJmYWNlcyB0byAwCj4gaW5pdGlhbGx5LiAgVGhlIGV4aXN0aW5nIGNvZGUgYWxy ZWFkeSBzZXRzIGl0IHRvIHRoZSBwcm9wZXIgdmFsdWUKPiBhZnRlciBwYXJzaW5nIGlzIGNvbXBs ZXRlLgo+IAo+IFNpZ25lZC1vZmYtYnk6IEFsYW4gU3Rlcm4gPHN0ZXJuQHJvd2xhbmQuaGFydmFy ZC5lZHU+Cj4gUmVwb3J0ZWQtYnk6IEFuZHJleSBLb25vdmFsb3YgPGFuZHJleWtudmxAZ29vZ2xl LmNvbT4KPiBDQzogPHN0YWJsZUB2Z2VyLmtlcm5lbC5vcmc+Cj4gCj4gLS0tCj4gCj4gCj4gW2Fz MTg1NV0KPiAKPiAKPiAgZHJpdmVycy91c2IvY29yZS9jb25maWcuYyB8ICAgIDQgKysrLQo+ICAx IGZpbGUgY2hhbmdlZCwgMyBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0pCj4gCj4gSW5kZXg6 IHVzYi00LngvZHJpdmVycy91c2IvY29yZS9jb25maWcuYwo+ID09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KPiAtLS0gdXNi LTQueC5vcmlnL2RyaXZlcnMvdXNiL2NvcmUvY29uZmlnLmMKPiArKysgdXNiLTQueC9kcml2ZXJz L3VzYi9jb3JlL2NvbmZpZy5jCj4gQEAgLTU1NSw2ICs1NTUsOSBAQCBzdGF0aWMgaW50IHVzYl9w YXJzZV9jb25maWd1cmF0aW9uKHN0cnVjCj4gIAl1bnNpZ25lZCBpYWRfbnVtID0gMDsKPiAgCj4g IAltZW1jcHkoJmNvbmZpZy0+ZGVzYywgYnVmZmVyLCBVU0JfRFRfQ09ORklHX1NJWkUpOwo+ICsJ bmludGYgPSBuaW50Zl9vcmlnID0gY29uZmlnLT5kZXNjLmJOdW1JbnRlcmZhY2VzOwo+ICsJY29u ZmlnLT5kZXNjLmJOdW1JbnRlcmZhY2VzID0gMDsJLy8gQWRqdXN0ZWQgbGF0ZXIKPiArCgpUaGUg Y29tbWVudCBmb3JtYXQ/Cg==