From nobody Tue Sep 29 02:02:55 2026 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 996FF1B4257; Thu, 13 Aug 2026 14:49:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786632585; cv=none; b=DtWweh6by6AXzTaTau0Bn9A4jGJRUIff60vHNpNhWZlNuMbDUVBGaYaYjiVsSim+F2rQ7O3cdgAmJWFKQkbMrRL7kGiP+V+BMq8aSZryKV8EzD5C8QmrEYLjGndjB2Ff7j45NG8EuXiFldkH6/Y0xq89asUPXJSc4bcH7+/AOJg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786632585; c=relaxed/simple; bh=C7JPgZNL+0+W6W7J++xewlWJfycZ/5QeG/LLRbwGFFI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=tJjQtr8BNZ9srqoWIBaghIpBm/HCT1a6glkD8zBYb9uCeKf5Rdey1PfOqBMkZSN/iVkzQq70Ikll6uf1tD1pcfH6zEu7y2vEAZlkzfdEo2ItPeubP7JAnrykiieR/T5c3nMTMwiWw8CJA2+DIZeR9PaxYGaG1DW0QK2J+XzrSkE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from DESKTOP-L0HPE2S.localdomain (unknown [36.110.52.2]) by APP-03 (Coremail) with SMTP id rQCowAAXHz182X1qsT4vBQ--.25114S2; Thu, 13 Aug 2026 22:49:33 +0800 (CST) From: Haotian Zhang To: brking@us.ibm.com, martin.petersen@oracle.com, James.Bottomley@HansenPartnership.com Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Haotian Zhang , stable@vger.kernel.org Subject: [PATCH] scsi: ipr: fix out-of-bounds read in __ipr_format_res_path() Date: Thu, 13 Aug 2026 22:46:14 +0800 Message-ID: <20260813144614.5081-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: rQCowAAXHz182X1qsT4vBQ--.25114S2 X-Coremail-Antispam: 1UD129KBjvdXoWrKw1fJrWDAF43CrykGw1UGFg_yoWkXFb_Gr WDJrZrA3WUCry7Ga1F9FWSvrWq9a4DK3W8CrnIqryfAF4I9r93Zwn3Wr9xXrsrWrWYqa9r ZwsrZFW0yr17ZjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb4xFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_JFI_Gr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_GcCE3s 1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0 cI8IcVAFwI0_Jrv_JF1lYx0Ex4A2jsIE14v26r4UJVWxJr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCY1x0262kKe7AKxVWU AVWUtwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14 v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkG c2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI 0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4U MIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUdKsbUUU UU= X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiCRUSA2p9uBcqdAABsq Content-Type: text/plain; charset="utf-8" The loop in __ipr_format_res_path() reads res_path[i] before checking i against IPR_RES_PATH_BYTES, so an adapter-supplied resource path without a 0xff terminator in its 8 bytes causes a read one byte past the array. Move the index check before the element access so the loop stops at the array boundary. Fixes: 3e7ebdfa58dd ("[SCSI] ipr: update the configuration table code for t= he next generation chip") Cc: stable@vger.kernel.org Signed-off-by: Haotian Zhang --- drivers/scsi/ipr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index dbd58a7e7bc1..3cb8fb02d706 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -1217,7 +1217,7 @@ static char *__ipr_format_res_path(u8 *res_path, char= *buffer, int len) =20 *p =3D '\0'; p +=3D scnprintf(p, buffer + len - p, "%02X", res_path[0]); - for (i =3D 1; res_path[i] !=3D 0xff && i < IPR_RES_PATH_BYTES; i++) + for (i =3D 1; i < IPR_RES_PATH_BYTES && res_path[i] !=3D 0xff; i++) p +=3D scnprintf(p, buffer + len - p, "-%02X", res_path[i]); =20 return buffer; --=20 2.43.0