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Mon, 13 Apr 2026 23:04:36 -0700 (PDT) Received: from tdc4045031631.internal.cloudapp.net ([20.63.37.123]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8ac84a10e7esm113910586d6.16.2026.04.13.23.04.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Apr 2026 23:04:35 -0700 (PDT) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: base64 From: Ashutosh Desai To: netdev@vger.kernel.org Cc: linux-hams@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] rose: fix OOB reads on short CLEAR REQUEST frames Date: Tue, 14 Apr 2026 06:04:34 -0000 Message-ID: <177614667427.3606651.8700070406932922261@gmail.com> cm9zZV9wcm9jZXNzX3J4X2ZyYW1lKCkgY2FsbHMgcm9zZV9kZWNvZGUoKSB3aGljaCByZWFkcyBz a2ItPmRhdGFbMl0Kd2l0aG91dCBhbnkgcHJpb3IgbGVuZ3RoIGNoZWNrLiBGb3IgQ0xFQVIgUkVR VUVTVCBmcmFtZXMgdGhlIHN0YXRlCm1hY2hpbmVzIHRoZW4gcmVhZCBza2ItPmRhdGFbM10gYW5k IHNrYi0+ZGF0YVs0XSBhcyB0aGUgY2F1c2UgYW5kCmRpYWdub3N0aWMgYnl0ZXMuCgpBIGNyYWZ0 ZWQgMy1ieXRlIFJPU0UgQ0xFQVIgUkVRVUVTVCBmcmFtZSBwYXNzZXMgdGhlIG1pbmltdW0gbGVu Z3RoCmdhdGUgaW4gcm9zZV9yb3V0ZV9mcmFtZSgpIGFuZCByZWFjaGVzIHJvc2VfcHJvY2Vzc19y eF9mcmFtZSgpLCB3aGVyZQpyb3NlX2RlY29kZSgpIHJlYWRzIG9uZSBieXRlIHBhc3QgdGhlIGhl YWRlciBhbmQgdGhlIHN0YXRlIG1hY2hpbmVzCnJlYWQgdHdvIGJ5dGVzIHBhc3QgdGhlIHZhbGlk IGJ1ZmZlci4KCkFkZCBhIHBza2JfbWF5X3B1bGwoc2tiLCAzKSBjaGVjayBiZWZvcmUgcm9zZV9k ZWNvZGUoKSB0byBjb3ZlciBpdHMKc2tiLT5kYXRhWzJdIGFjY2VzcywgYW5kIGEgcHNrYl9tYXlf cHVsbChza2IsIDUpIGNoZWNrIGFmdGVyd2FyZHMgZm9yCnRoZSBDTEVBUiBSRVFVRVNUIHBhdGgg dG8gY292ZXIgdGhlIGNhdXNlIGFuZCBkaWFnbm9zdGljIHJlYWRzLgoKRml4ZXM6IDFkYTE3N2U0 YzNmNCAoIkxpbnV4LTIuNi4xMi1yYzIiKQpDYzogc3RhYmxlQHZnZXIua2VybmVsLm9yZwpTaWdu ZWQtb2ZmLWJ5OiBBc2h1dG9zaCBEZXNhaSA8YXNodXRvc2hkZXNhaTk5M0BnbWFpbC5jb20+Ci0t LQpWMSAtPiBWMjogc3dpdGNoIHNrYi0+bGVuIGNoZWNrIHRvIHBza2JfbWF5X3B1bGw7IGFsc28g YWRkCiAgICAgICAgICBwc2tiX21heV9wdWxsKHNrYiwgMykgYmVmb3JlIHJvc2VfZGVjb2RlKCkg dG8gY292ZXIgaXRzCiAgICAgICAgICBza2ItPmRhdGFbMl0gYWNjZXNzCgp2MTogaHR0cHM6Ly9s b3JlLmtlcm5lbC5vcmcvbmV0ZGV2LzIwMjYwNDA5MDEzMjQ2LjIwNTE3NDYtMS1hc2h1dG9zaGRl c2FpOTkzQGdtYWlsLmNvbS8KCiBuZXQvcm9zZS9yb3NlX2luLmMgfCAxMCArKysrKysrKysrCiAx IGZpbGUgY2hhbmdlZCwgMTAgaW5zZXJ0aW9ucygrKQoKZGlmZiAtLWdpdCBhL25ldC9yb3NlL3Jv c2VfaW4uYyBiL25ldC9yb3NlL3Jvc2VfaW4uYwppbmRleCAwMjc2YjM5M2YwZTUuLmI5ZjAxYTEx ZTJkZiAxMDA2NDQKLS0tIGEvbmV0L3Jvc2Uvcm9zZV9pbi5jCisrKyBiL25ldC9yb3NlL3Jvc2Vf aW4uYwpAQCAtMjY5LDggKzI2OSwxOCBAQCBpbnQgcm9zZV9wcm9jZXNzX3J4X2ZyYW1lKHN0cnVj dCBzb2NrICpzaywgc3RydWN0IHNrX2J1ZmYgKnNrYikKIGlmIChyb3NlLT5zdGF0ZSA9PSBST1NF X1NUQVRFXzApCiAgMDsKIAoraWYgKCFwc2tiX21heV9wdWxsKHNrYiwgMykpIHsKK2tmcmVlX3Nr Yihza2IpOworcmV0dXJuIDA7Cit9CisKIGZyYW1ldHlwZSA9IHJvc2VfZGVjb2RlKHNrYiwgJm5z LCAmbnIsICZxLCAmZCwgJm0pOwogCitpZiAoZnJhbWV0eXBlID09IFJPU0VfQ0xFQVJfUkVRVUVT VCAmJiAhcHNrYl9tYXlfcHVsbChza2IsIDUpKSB7CitrZnJlZV9za2Ioc2tiKTsKK3JldHVybiAw OworfQorCiBzd2l0Y2ggKHJvc2UtPnN0YXRlKSB7CiBjYXNlIFJPU0VfU1RBVEVfMToKIHVldWVk ID0gcm9zZV9zdGF0ZTFfbWFjaGluZShzaywgc2tiLCBmcmFtZXR5cGUpOwotLSAKMi4zNC4x