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{
    "id": 105122,
    "url": "http://patches.dpdk.org/api/patches/105122/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/patch/20211214033016.29927-1-wangzhihong.wzh@bytedance.com/",
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    "msgid": "<20211214033016.29927-1-wangzhihong.wzh@bytedance.com>",
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    "date": "2021-12-14T03:30:16",
    "name": "ring: fix overflow in memory size calcuation",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": true,
    "hash": "986c0d7f635fdae05efd90cb739d8669a394273d",
    "submitter": {
        "id": 2312,
        "url": "http://patches.dpdk.org/api/people/2312/?format=api",
        "name": "王志宏",
        "email": "wangzhihong.wzh@bytedance.com"
    },
    "delegate": {
        "id": 24651,
        "url": "http://patches.dpdk.org/api/users/24651/?format=api",
        "username": "dmarchand",
        "first_name": "David",
        "last_name": "Marchand",
        "email": "david.marchand@redhat.com"
    },
    "mbox": "http://patches.dpdk.org/project/dpdk/patch/20211214033016.29927-1-wangzhihong.wzh@bytedance.com/mbox/",
    "series": [
        {
            "id": 20937,
            "url": "http://patches.dpdk.org/api/series/20937/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=20937",
            "date": "2021-12-14T03:30:16",
            "name": "ring: fix overflow in memory size calcuation",
            "version": 1,
            "mbox": "http://patches.dpdk.org/series/20937/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/patches/105122/comments/",
    "check": "success",
    "checks": "http://patches.dpdk.org/api/patches/105122/checks/",
    "tags": {},
    "related": [],
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        "From": "Zhihong Wang <wangzhihong.wzh@bytedance.com>",
        "To": "konstantin.ananyev@intel.com, honnappa.nagarahalli@arm.com, dev@dpdk.org",
        "Cc": "Zhihong Wang <wangzhihong.wzh@bytedance.com>,\n\tstable@dpdk.org",
        "Subject": "[PATCH] ring: fix overflow in memory size calcuation",
        "Date": "Tue, 14 Dec 2021 11:30:16 +0800",
        "Message-Id": "<20211214033016.29927-1-wangzhihong.wzh@bytedance.com>",
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        "Errors-To": "dev-bounces@dpdk.org"
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    "content": "Parameters count and esize are both unsigned int, and their product can\nlegally exceed unsigned int and lead to runtime access violation.\n\nFixes: cc4b218790f6 (\"ring: support configurable element size\")\nCc: stable@dpdk.org\n\nSigned-off-by: Zhihong Wang <wangzhihong.wzh@bytedance.com>\n---\n lib/ring/rte_ring.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)",
    "diff": "diff --git a/lib/ring/rte_ring.c b/lib/ring/rte_ring.c\nindex f17bd966be..d1b80597af 100644\n--- a/lib/ring/rte_ring.c\n+++ b/lib/ring/rte_ring.c\n@@ -75,7 +75,7 @@ rte_ring_get_memsize_elem(unsigned int esize, unsigned int count)\n \t\treturn -EINVAL;\n \t}\n \n-\tsz = sizeof(struct rte_ring) + count * esize;\n+\tsz = sizeof(struct rte_ring) + (ssize_t)count * esize;\n \tsz = RTE_ALIGN(sz, RTE_CACHE_LINE_SIZE);\n \treturn sz;\n }\n",
    "prefixes": []
}