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CNVD-2017-33480

Vulnerability from cnvd - Published: 2017-11-10
VLAI
Title
Linux kernel本地拒绝服务漏洞(CNVD-2017-33480)
Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.13.11之前的版本中的arch/powerpc/kvm/powerpc.c文件的‘kvm_vm_ioctl_check_extension’函数存在本地拒绝服务漏洞。本地攻击者可通过向/dev/kvm发送KVM_CHECK_EXTENSION KVM_CAP_PPC_HTM ioctl调用利用该漏洞造成拒绝服务(空指针逆向引用和系统崩溃)。
Severity
Patch Name
Linux kernel本地拒绝服务漏洞(CNVD-2017-33480)的补丁
Patch Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.13.11之前的版本中的arch/powerpc/kvm/powerpc.c文件的‘kvm_vm_ioctl_check_extension’函数存在本地拒绝服务漏洞。本地攻击者可通过向/dev/kvm发送KVM_CHECK_EXTENSION KVM_CAP_PPC_HTM ioctl调用利用该漏洞造成拒绝服务(空指针逆向引用和系统崩溃)。目前,供应商发布了安全公告及相关补丁信息,修复了此漏洞。
Formal description

目前厂商已发布升级补丁以修复漏洞,补丁获取链接: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ac64115a66c18c01745bbd3c47a36b124e5fd8c0

Reference
https://nvd.nist.gov/vuln/detail/CVE-2017-15306
Impacted products
Name
Linux kernel <=4.13.11
Show details on source website

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-15306"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.13.11\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684arch/powerpc/kvm/powerpc.c\u6587\u4ef6\u7684\u2018kvm_vm_ioctl_check_extension\u2019\u51fd\u6570\u5b58\u5728\u672c\u5730\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411/dev/kvm\u53d1\u9001KVM_CHECK_EXTENSION KVM_CAP_PPC_HTM ioctl\u8c03\u7528\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u548c\u7cfb\u7edf\u5d29\u6e83\uff09\u3002",
  "discovererName": "Greg Kurz",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ac64115a66c18c01745bbd3c47a36b124e5fd8c0",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-33480",
  "openTime": "2017-11-10",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.13.11\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684arch/powerpc/kvm/powerpc.c\u6587\u4ef6\u7684\u2018kvm_vm_ioctl_check_extension\u2019\u51fd\u6570\u5b58\u5728\u672c\u5730\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411/dev/kvm\u53d1\u9001KVM_CHECK_EXTENSION KVM_CAP_PPC_HTM ioctl\u8c03\u7528\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u548c\u7cfb\u7edf\u5d29\u6e83\uff09\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Linux kernel\u672c\u5730\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-33480\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c=4.13.11"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-15306",
  "serverity": "\u4e2d",
  "submitTime": "2017-11-07",
  "title": "Linux kernel\u672c\u5730\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-33480\uff09"
}



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