Description
In the Linux kernel, the following vulnerability has been resolved: vdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check The vdpa_nl_policy structure is used to validate the nlattr when parsing the incoming nlmsg. It will ensure the attribute being described produces a valid nlattr pointer in info->attrs before entering into each handler in vdpa_nl_ops. That is to say, the missing part in vdpa_nl_policy may lead to illegal nlattr after parsing, which could lead to OOB read just like CVE-2023-3773. This patch adds the missing nla_policy for vdpa max vqp attr to avoid such bugs.
Product status
ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a before ff71709445ac033e6e250d971683110e4781c068
ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a before ea65e8b5e6b1a34deda7564f09c90e9e80db436a
ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a before 5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f
5.16
Any version before 5.16
6.1.47
6.4.12
6.5
References
git.kernel.org/...c/ff71709445ac033e6e250d971683110e4781c068
git.kernel.org/...c/ea65e8b5e6b1a34deda7564f09c90e9e80db436a
git.kernel.org/...c/5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f
