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Sun, 02 Aug 2026 01:01:51 -0700 (PDT) Received: from Elman ([37.114.176.146]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49808199f2csm163630025e9.5.2026.08.02.01.01.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 02 Aug 2026 01:01:51 -0700 (PDT) From: Elman Shahbazov To: linux-bluetooth@vger.kernel.org Cc: secalert@redhat.com, luiz.dentz@gmail.com, Elman Shahbazov Subject: [PATCH] Fix Out-of-Bounds Read in AVRCP GetFolderItems parsing Date: Sun, 2 Aug 2026 11:58:50 +0400 Message-ID: <20260802080137.17604-1-shahbazovelman97@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Signed-off-by: Elman Shahbazov --- profiles/audio/avrcp.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/profiles/audio/avrcp.c b/profiles/audio/avrcp.c index 2194a9135..19ea13c16 100644 --- a/profiles/audio/avrcp.c +++ b/profiles/audio/avrcp.c @@ -2625,8 +2625,12 @@ static struct media_item *parse_media_element(struct avrcp *session, uid = get_be64(&operands[0]); memset(name, 0, sizeof(name)); - namesize = get_be16(&operands[11]); + namesize = MIN(get_be16(&operands[11]), len - 13); namelen = MIN(namesize, sizeof(name) - 1); + + if (len < 13 + namesize) + return NULL; + if (namelen > 0) { memcpy(name, &operands[13], namelen); strtoutf8(name, namelen); @@ -2669,7 +2673,8 @@ static struct media_item *parse_media_folder(struct avrcp *session, playable = operands[9]; memset(name, 0, sizeof(name)); - namelen = MIN(get_be16(&operands[12]), sizeof(name) - 1); + namelen = MIN(get_be16(&operands[12]), len - 14); + namelen = MIN(namelen, sizeof(name) - 1); if (namelen > 0) memcpy(name, &operands[14], namelen); -- 2.53.0