Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 已修复 Linux 内核中的下列漏洞：vdpa_sim_blk: set number of address spaces and virtqueue groups Commit bda324fd037a (vdpasim: control virtqueue support) added two new fields (nas, ngroups) to vdpasim_dev_attr, but we forgot to initialize them for vdpa_sim_blk. When creating a new vdpa_sim_blk device this causes the kernel to panic in this way: $ vdpa dev add mgmtdev vdpasim_blk name blk0 BUG: kernel NULL pointer dereference, address: 0000000000000030 ... RIP:
    0010:vhost_iotlb_add_range_ctx+0x41/0x220 [vhost_iotlb] ... Call Trace: <TASK> vhost_iotlb_add_range+0x11/0x800 [vhost_iotlb] vdpasim_map_range+0x91/0xd0 [vdpa_sim] vdpasim_alloc_coherent+0x56/0x90 [vdpa_sim] ... This happens because vdpasim->iommu[0] is not initialized when dev_attr.nas is 0. Let's fix this issue by initializing both (nas, ngroups) to 1 for vdpa_sim_blk.
    (CVE-2022-50058)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

检测

Linux Distros 未修补的漏洞：CVE-2022-50058

medium Nessus 插件 ID 248665

版本 1.6