cnvd-2018-06440
Vulnerability from cnvd
Title
Linux kernel拒绝服务漏洞(CNVD-2018-06440)
Description
Linux kernel是一种计算机操作系统内核,以C语言和汇编语言写成,符合POSIX标准,按GNU通用公共许可证发行。
4.14.4之前的Linux kernel存在拒绝服务漏洞。该漏洞产生的原因是Linux kernel中的mm/oom_kill.c中的__oom_reap_task_mm函数未能正确处理聚集操作。攻击者可通过在特定时间窗口内触发copy_to_user调用利用该漏洞导致拒绝服务(TLB条目泄漏或释放后重用)或可能造成其他影响。
Severity
高
VLAI Severity ?
Patch Name
Linux kernel拒绝服务漏洞(CNVD-2018-06440)的补丁
Patch Description
Linux kernel是一种计算机操作系统内核,以C语言和汇编语言写成,符合POSIX标准,按GNU通用公共许可证发行。
4.14.4之前的Linux kernel存在拒绝服务漏洞。该漏洞产生的原因是Linux kernel中的mm/oom_kill.c中的__oom_reap_task_mm函数未能正确处理聚集操作。攻击者可通过在特定时间窗口内触发copy_to_user调用利用该漏洞导致拒绝服务(TLB条目泄漏或释放后重用)或可能造成其他影响。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
厂商已发布漏洞修复程序,请及时关注更新: https://github.com/torvalds/linux/commit/687cb0884a714ff484d038e9190edc874edcf146
Reference
https://nvd.nist.gov/vuln/detail/CVE-2017-18202
Impacted products
Name | Linux Kernel <4.14.4 |
---|
{ "cves": { "cve": { "cveNumber": "CVE-2017-18202" } }, "description": "Linux kernel\u662f\u4e00\u79cd\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\uff0c\u4ee5C\u8bed\u8a00\u548c\u6c47\u7f16\u8bed\u8a00\u5199\u6210\uff0c\u7b26\u5408POSIX\u6807\u51c6\uff0c\u6309GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u53d1\u884c\u3002\r\n\r\n4.14.4\u4e4b\u524d\u7684Linux kernel\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fLinux kernel\u4e2d\u7684mm/oom_kill.c\u4e2d\u7684__oom_reap_task_mm\u51fd\u6570\u672a\u80fd\u6b63\u786e\u5904\u7406\u805a\u96c6\u64cd\u4f5c\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728\u7279\u5b9a\u65f6\u95f4\u7a97\u53e3\u5185\u89e6\u53d1copy_to_user\u8c03\u7528\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08TLB\u6761\u76ee\u6cc4\u6f0f\u6216\u91ca\u653e\u540e\u91cd\u7528\uff09\u6216\u53ef\u80fd\u9020\u6210\u5176\u4ed6\u5f71\u54cd\u3002", "discovererName": "Linux", "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/torvalds/linux/commit/687cb0884a714ff484d038e9190edc874edcf146", "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e", "number": "CNVD-2018-06440", "openTime": "2018-03-27", "patchDescription": "Linux kernel\u662f\u4e00\u79cd\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\uff0c\u4ee5C\u8bed\u8a00\u548c\u6c47\u7f16\u8bed\u8a00\u5199\u6210\uff0c\u7b26\u5408POSIX\u6807\u51c6\uff0c\u6309GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u53d1\u884c\u3002\r\n\r\n4.14.4\u4e4b\u524d\u7684Linux kernel\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fLinux kernel\u4e2d\u7684mm/oom_kill.c\u4e2d\u7684__oom_reap_task_mm\u51fd\u6570\u672a\u80fd\u6b63\u786e\u5904\u7406\u805a\u96c6\u64cd\u4f5c\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5728\u7279\u5b9a\u65f6\u95f4\u7a97\u53e3\u5185\u89e6\u53d1copy_to_user\u8c03\u7528\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08TLB\u6761\u76ee\u6cc4\u6f0f\u6216\u91ca\u653e\u540e\u91cd\u7528\uff09\u6216\u53ef\u80fd\u9020\u6210\u5176\u4ed6\u5f71\u54cd\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-2018-06440\uff09\u7684\u8865\u4e01", "products": { "product": "Linux Kernel \u003c4.14.4" }, "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-18202", "serverity": "\u9ad8", "submitTime": "2018-02-27", "title": "Linux kernel\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2018-06440\uff09" }
Loading…
Loading…
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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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.
Loading…
Loading…