From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752163AbeACJk2 (ORCPT + 1 other); Wed, 3 Jan 2018 04:40:28 -0500 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:63133 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751724AbeACJkY (ORCPT ); Wed, 3 Jan 2018 04:40:24 -0500 From: Hugues FRUCHET To: Andi Kleen , "linux-kernel@vger.kernel.org" CC: "akpm@linux-foundation.org" , Andi Kleen , "mchehab@s-opensource.com" Subject: Re: [PATCH] Fix read buffer overflow in delta-ipc Thread-Topic: [PATCH] Fix read buffer overflow in delta-ipc Thread-Index: AQHTerrHtVDn5KqlEkaIBHHbWXaJuaNh53EA Date: Wed, 3 Jan 2018 09:40:04 +0000 Message-ID: <74958ca0-e78e-0505-f738-1ddda50d8ead@st.com> References: <20171222001212.1850-1-andi@firstfloor.org> In-Reply-To: <20171222001212.1850-1-andi@firstfloor.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.75.127.46] Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2018-01-03_06:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: SGkgQW5kaSwNClRoYW5rcyBmb3IgdGhlIHBhdGNoIGJ1dCBJIHdvdWxkIHN1Z2dlc3QgdG8gdXNl IHN0cmxjcHkgaW5zdGVhZCwgdGhpcyANCndpbGwgZ3VhcmQgbXNnLm5hbWUgb3ZlcndyaXRpbmcg YW5kIGFkZCB0aGUgTlVMTCB0ZXJtaW5hdGlvbiBpbiBjYXNlDQpvZiB0cnVuY2F0aW9uOg0KLQlt ZW1jcHkobXNnLm5hbWUsIG5hbWUsIHNpemVvZihtc2cubmFtZSkpOw0KLQltc2cubmFtZVtzaXpl b2YobXNnLm5hbWUpIC0gMV0gPSAwOw0KKwlzdHJsY3B5KG1zZy5uYW1lLCBuYW1lLCBzaXplb2Yo bXNnLm5hbWUpKTsNCg0KQmVzdCByZWdhcmRzLA0KSHVndWVzLg0KDQpPbiAxMi8yMi8yMDE3IDAx OjEyIEFNLCBBbmRpIEtsZWVuIHdyb3RlOg0KPiBGcm9tOiBBbmRpIEtsZWVuIDxha0BsaW51eC5p bnRlbC5jb20+DQo+IA0KPiBUaGUgc2luZ2xlIGNhbGxlciBwYXNzZXMgYSBzdHJpbmcgdG8gZGVs dGFfaXBjX29wZW4sIHdoaWNoIGNvcGllcyB3aXRoIGENCj4gZml4ZWQgc2l6ZSBsYXJnZXIgdGhh biB0aGUgc3RyaW5nLiBTbyBpdCBjb3BpZXMgc29tZSByYW5kb20gZGF0YSBhZnRlcg0KPiB0aGUg b3JpZ2luYWwgc3RyaW5nIHRoZSBybyBzZWdtZW50Lg0KPiANCj4gSWYgdGhlIHN0cmluZyB3YXMg YXQgdGhlIGVuZCBvZiBhIHBhZ2UgaXQgbWF5IGZhdWx0Lg0KPiANCj4gSnVzdCBjb3B5IHRoZSBz dHJpbmcgd2l0aCBhIG5vcm1hbCBzdHJjcHkgYWZ0ZXIgY2xlYXJpbmcgdGhlIGZpZWxkLg0KPiAN Cj4gRm91bmQgYnkgYSBMVE8gYnVpbGQgKHdoaWNoIGVycm9ycyBvdXQpDQo+IGJlY2F1c2UgdGhl IGNvbXBpbGVyIGlubGluZXMgdGhlIGZ1bmN0aW9ucyBhbmQgY2FuIHJlc29sdmUNCj4gdGhlIHN0 cmluZyBzaXplcyBhbmQgdHJpZ2dlcnMgdGhlIGNvbXBpbGUgdGltZSBjaGVja3MgaW4gbWVtY3B5 Lg0KPiANCj4gSW4gZnVuY3Rpb24g4oCYbWVtY3B54oCZLA0KPiAgICAgIGlubGluZWQgZnJvbSDi gJhkZWx0YV9pcGNfb3Blbi5jb25zdHByb3DigJkgYXQgbGludXgvZHJpdmVycy9tZWRpYS9wbGF0 Zm9ybS9zdGkvZGVsdGEvZGVsdGEtaXBjLmM6MTc4OjAsDQo+ICAgICAgaW5saW5lZCBmcm9tIOKA mGRlbHRhX21qcGVnX2lwY19vcGVu4oCZIGF0IGxpbnV4L2RyaXZlcnMvbWVkaWEvcGxhdGZvcm0v c3RpL2RlbHRhL2RlbHRhLW1qcGVnLWRlYy5jOjIyNzowLA0KPiAgICAgIGlubGluZWQgZnJvbSDi gJhkZWx0YV9tanBlZ19kZWNvZGXigJkgYXQgbGludXgvZHJpdmVycy9tZWRpYS9wbGF0Zm9ybS9z dGkvZGVsdGEvZGVsdGEtbWpwZWctZGVjLmM6NDAzOjA6DQo+IC9ob21lL2FuZGkvbHNyYy9saW51 eC9pbmNsdWRlL2xpbnV4L3N0cmluZy5oOjMzNzowOiBlcnJvcjogY2FsbCB0byDigJhfX3JlYWRf b3ZlcmZsb3cy4oCZIGRlY2xhcmVkIHdpdGggYXR0cmlidXRlIGVycm9yOiBkZXRlY3RlZCByZWFk IGJleW9uZCBzaXplIG9mIG9iamVjdCBwYXNzZWQgYXMgMm5kIHBhcmFtZXRlcg0KPiAgICAgIF9f cmVhZF9vdmVyZmxvdzIoKTsNCj4gDQo+IENjOiBodWd1ZXMuZnJ1Y2hldEBzdC5jb20NCj4gQ2M6 IG1jaGVoYWJAcy1vcGVuc291cmNlLmNvbQ0KPiBTaWduZWQtb2ZmLWJ5OiBBbmRpIEtsZWVuIDxh a0BsaW51eC5pbnRlbC5jb20+DQo+IC0tLQ0KPiAgIGRyaXZlcnMvbWVkaWEvcGxhdGZvcm0vc3Rp L2RlbHRhL2RlbHRhLWlwYy5jIHwgNCArKy0tDQo+ICAgMSBmaWxlIGNoYW5nZWQsIDIgaW5zZXJ0 aW9ucygrKSwgMiBkZWxldGlvbnMoLSkNCj4gDQo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL21lZGlh L3BsYXRmb3JtL3N0aS9kZWx0YS9kZWx0YS1pcGMuYyBiL2RyaXZlcnMvbWVkaWEvcGxhdGZvcm0v c3RpL2RlbHRhL2RlbHRhLWlwYy5jDQo+IGluZGV4IDQxZTRhNGMyNTliMy4uYjZjMjU2ZTNjZWI2 IDEwMDY0NA0KPiAtLS0gYS9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL3N0aS9kZWx0YS9kZWx0YS1p cGMuYw0KPiArKysgYi9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL3N0aS9kZWx0YS9kZWx0YS1pcGMu Yw0KPiBAQCAtMTc1LDggKzE3NSw4IEBAIGludCBkZWx0YV9pcGNfb3BlbihzdHJ1Y3QgZGVsdGFf Y3R4ICpwY3R4LCBjb25zdCBjaGFyICpuYW1lLA0KPiAgIAltc2cuaXBjX2J1Zl9zaXplID0gaXBj X2J1Zl9zaXplOw0KPiAgIAltc2cuaXBjX2J1Zl9wYWRkciA9IGN0eC0+aXBjX2J1Zi0+cGFkZHI7 DQo+ICAgDQo+IC0JbWVtY3B5KG1zZy5uYW1lLCBuYW1lLCBzaXplb2YobXNnLm5hbWUpKTsNCj4g LQltc2cubmFtZVtzaXplb2YobXNnLm5hbWUpIC0gMV0gPSAwOw0KPiArCW1lbXNldChtc2cubmFt ZSwgMCwgc2l6ZW9mKG1zZy5uYW1lKSk7DQo+ICsJc3RyY3B5KG1zZy5uYW1lLCBuYW1lKTsNCj4g ICANCj4gICAJbXNnLnBhcmFtX3NpemUgPSBwYXJhbS0+c2l6ZTsNCj4gICAJbWVtY3B5KGN0eC0+ aXBjX2J1Zi0+dmFkZHIsIHBhcmFtLT5kYXRhLCBtc2cucGFyYW1fc2l6ZSk7DQo+IA==