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CAT:NONE; SFS:(4636009)(46966006)(36840700001)(356005)(1076003)(70206006)(36860700001)(86362001)(16526019)(186003)(47076005)(26005)(8936002)(70586007)(2906002)(336012)(8676002)(2616005)(426003)(7636003)(6666004)(5660300002)(83380400001)(6286002)(36756003)(54906003)(316002)(4326008)(55016002)(508600001)(7696005)(6916009)(82310400003); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Oct 2021 10:49:47.2726 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: da08c311-6b7c-4b1c-ee15-08d98d6e025d X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.112.34]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT031.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN1PR12MB2528 Subject: [dpdk-stable] [PATCH v4 4/5] app/testpmd: fix hex string parser in flow commands X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" The hexadecimal string parser does not check the target field buffer size, buffer overflow happens and might cause the application failure (segmentation fault is observed usually). Fixes: 169a9fed1f4c ("app/testpmd: fix hex string parser support for flow API") Cc: stable@dpdk.org Signed-off-by: Viacheslav Ovsiienko Acked-by: Ori Kam --- app/test-pmd/cmdline_flow.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c index 736029c4fd..6827d9228f 100644 --- a/app/test-pmd/cmdline_flow.c +++ b/app/test-pmd/cmdline_flow.c @@ -7291,10 +7291,13 @@ parse_hex(struct context *ctx, const struct token *token, hexlen -= 2; } if (hexlen > length) - return -1; + goto error; ret = parse_hex_string(str, hex_tmp, &hexlen); if (ret < 0) goto error; + /* Check the converted binary fits into data buffer. */ + if (hexlen > size) + goto error; /* Let parse_int() fill length information first. */ ret = snprintf(tmp, sizeof(tmp), "%u", hexlen); if (ret < 0) -- 2.18.1