CVE-2023-53369

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: dcb: choose correct policy to parse DCB_ATTR_BCN<br /> <br /> The dcbnl_bcn_setcfg uses erroneous policy to parse tb[DCB_ATTR_BCN],<br /> which is introduced in commit 859ee3c43812 ("DCB: Add support for DCB<br /> BCN"). Please see the comment in below code<br /> <br /> static int dcbnl_bcn_setcfg(...)<br /> {<br /> ...<br /> ret = nla_parse_nested_deprecated(..., dcbnl_pfc_up_nest, .. )<br /> // !!! dcbnl_pfc_up_nest for attributes<br /> // DCB_PFC_UP_ATTR_0 to DCB_PFC_UP_ATTR_ALL in enum dcbnl_pfc_up_attrs<br /> ...<br /> for (i = DCB_BCN_ATTR_RP_0; i