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[217.105.56.94]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bd4f4dea93dsm201976566b.38.2026.05.15.03.29.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 May 2026 03:29:19 -0700 (PDT) Message-ID: <6a06f57f.07ac1395.28395d.c7d8@mx.google.com> Date: Fri, 15 May 2026 03:29:19 -0700 (PDT) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: base64 From: Alexandru Hossu To: linux-bluetooth@vger.kernel.org Cc: marcel@holtmann.org, luiz.dentz@gmail.com Subject: Bluetooth: ISO: null ptr deref in iso_recv() on ISO_END without prior ISO_START SGksCgpJIGZvdW5kIGEgbnVsbCBwb2ludGVyIGRlcmVmZXJlbmNlIGluIGlzb19yZWN2KCkgaW4g bmV0L2JsdWV0b290aC9pc28uYy4KCkF0IGxpbmUgMjU5NS0yNTk2OgoKICAgIGNhc2UgSVNPX0VO RDoKICAgICAgICBza2JfY29weV9mcm9tX2xpbmVhcl9kYXRhKHNrYiwKICAgICAgICAgICAgc2ti X3B1dChjb25uLT5yeF9za2IsIHNrYi0+bGVuKSwgc2tiLT5sZW4pOwoKY29ubi0+cnhfc2tiIGlz IHBhc3NlZCB0byBza2JfcHV0KCkgd2l0aG91dCBhIE5VTEwgY2hlY2suCgpJdCBjYW4gYmUgTlVM TCBpbiB0d28gY2FzZXMuIEZpcnN0LCBpZiBJU09fRU5EIGFycml2ZXMgd2l0aG91dCBhIHByaW9y CklTT19TVEFSVCBmcmFtZSwgY29ubi0+cnhfc2tiIHdhcyBuZXZlciBhbGxvY2F0ZWQuIFNlY29u ZCwgdGhlIElTT19DT05UCm92ZXJmbG93IGVycm9yIHBhdGggYXQgbGluZSAyNTgxLTI1ODcgY2Fs bHMga2ZyZWVfc2tiKGNvbm4tPnJ4X3NrYikgYW5kCnNldHMgaXQgdG8gTlVMTC4gQSBzdWJzZXF1 ZW50IElTT19FTkQgaGl0cyB0aGUgc2FtZSBwYXRoLgoKVGhlIElTT19DT05UIGNhc2UgYXQgbGlu ZSAyNTc1IGhhcyBhIGd1YXJkOgoKICAgIGlmICghY29ubi0+cnhfbGVuKSB7CiAgICAgICAgZ290 byBkcm9wOwogICAgfQoKSVNPX0VORCBoYXMgbm8gZXF1aXZhbGVudCBwcm90ZWN0aW9uLgoKU3Vn Z2VzdGVkIGZpeDoKCiAgICBjYXNlIElTT19FTkQ6CiAgICAgICAgaWYgKCFjb25uLT5yeF9za2Ip CiAgICAgICAgICAgIGdvdG8gZHJvcDsKICAgICAgICBza2JfY29weV9mcm9tX2xpbmVhcl9kYXRh KHNrYiwKICAgICAgICAgICAgc2tiX3B1dChjb25uLT5yeF9za2IsIHNrYi0+bGVuKSwgc2tiLT5s ZW4pOwoKQXR0YWNrIHN1cmZhY2U6IENJUyByZXF1aXJlcyBhbiBlc3RhYmxpc2hlZCBBQ0wgY29u bmVjdGlvbi4gQklTIHJlcXVpcmVzCnRoZSB2aWN0aW0gdG8gc3luYyB0byBhIG1hbGljaW91cyBi cm9hZGNhc3Rlci4gTm90IHplcm8tY2xpY2sgYnV0IHJlYWNoYWJsZQpmcm9tIGFuIGFkamFjZW50 IHVuYXV0aGVudGljYXRlZCBzb3VyY2Ugb24gQ0lTIHBhdGhzLgoKVGVzdGVkIG9uIGxpbnV4LW5l eHQgY29tbWl0IGU5OGQyMWMxNzBiMCAoMjAyNi0wNS0wOCkuCgpBbGV4YW5kcnUK