cnvd - cnvd-2015-01443

cnvd-2015-01443

Vulnerability from cnvd

Title: Linux kernel拒绝服务漏洞（CNVD-2015-01443）

Description:

Linux Kernel是Linux操作系统的内核。

Linux kernel 3.18.5之前版本arch/x86/kvm/emulate.c中的em_sysenter函数存在拒绝服务漏洞，允许攻击者利用漏洞获得 OS权限或导致拒绝服务。

Severity: 中

Patch Name: Linux kernel拒绝服务漏洞（CNVD-2015-01443）的补丁

Patch Description:

Linux Kernel是Linux操作系统的内核。Linux kernel 3.18.5之前版本arch/x86/kvm/emulate.c中的em_sysenter函数存在拒绝服务漏洞，允许攻击者利用漏洞获得 OS权限或导致拒绝服务。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:

用户可联系供应商获得补丁信息： http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f3747379accba8e95d70cec0eae0582c8c182050

Reference: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-7868

Impacted products

Name
Linux Kernel <3.18.5

Show details on source website

JSON

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{
  "bids": {
    "bid": {
      "bidNumber": "72842"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-0239"
    }
  },
  "description": "Linux Kernel\u662fLinux\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 3.18.5\u4e4b\u524d\u7248\u672carch/x86/kvm/emulate.c\u4e2d\u7684em_sysenter\u51fd\u6570\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u5141\u8bb8\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u83b7\u5f97 OS\u6743\u9650\u6216\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Linux",
  "formalWay": "\u7528\u6237\u53ef\u8054\u7cfb\u4f9b\u5e94\u5546\u83b7\u5f97\u8865\u4e01\u4fe1\u606f\uff1a\r\nhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f3747379accba8e95d70cec0eae0582c8c182050",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2015-01443",
  "openTime": "2015-03-05",
  "patchDescription": "Linux Kernel\u662fLinux\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u3002Linux kernel 3.18.5\u4e4b\u524d\u7248\u672carch/x86/kvm/emulate.c\u4e2d\u7684em_sysenter\u51fd\u6570\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u5141\u8bb8\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u83b7\u5f97 OS\u6743\u9650\u6216\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2015-01443\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003c3.18.5"
  },
  "referenceLink": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-7868",
  "serverity": "\u4e2d",
  "submitTime": "2015-03-04",
  "title": "Linux kernel\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2015-01443\uff09"
}

CVE-2015-0239 (GCVE-0-2015-0239)

Vulnerability from cvelistv5

Published

2015-03-02 11:00

Modified

2024-08-06 04:03

Severity ?

CWE

Summary

The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction.

References

▼	URL	Tags
	http://www.ubuntu.com/usn/USN-2515-1	vendor-advisory, x_refsource_UBUNTU
	http://www.debian.org/security/2015/dsa-3170	vendor-advisory, x_refsource_DEBIAN
	http://www.securityfocus.com/bid/72842	vdb-entry, x_refsource_BID
	http://www.openwall.com/lists/oss-security/2015/01/27/6	mailing-list, x_refsource_MLIST
	https://bugzilla.redhat.com/show_bug.cgi?id=1186448	x_refsource_CONFIRM
	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f3747379accba8e95d70cec0eae0582c8c182050	x_refsource_CONFIRM
	http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html	x_refsource_CONFIRM
	https://github.com/torvalds/linux/commit/f3747379accba8e95d70cec0eae0582c8c182050	x_refsource_CONFIRM
	http://www.ubuntu.com/usn/USN-2514-1	vendor-advisory, x_refsource_UBUNTU
	http://www.ubuntu.com/usn/USN-2518-1	vendor-advisory, x_refsource_UBUNTU
	http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html	x_refsource_CONFIRM
	http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5	x_refsource_CONFIRM
	http://www.mandriva.com/security/advisories?name=MDVSA-2015:058	vendor-advisory, x_refsource_MANDRIVA
	http://permalink.gmane.org/gmane.linux.kernel.commits.head/502245	mailing-list, x_refsource_MLIST
	http://www.ubuntu.com/usn/USN-2517-1	vendor-advisory, x_refsource_UBUNTU
	http://www.ubuntu.com/usn/USN-2516-1	vendor-advisory, x_refsource_UBUNTU
	http://rhn.redhat.com/errata/RHSA-2015-1272.html	vendor-advisory, x_refsource_REDHAT
	http://www.ubuntu.com/usn/USN-2513-1	vendor-advisory, x_refsource_UBUNTU

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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