cnvd-2019-38525
Vulnerability from cnvd
Title: Linux kernel资源管理错误漏漏洞
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 4.18.7之前版本中的block/blk-core.c文件的‘__blk_drain_queue()’函数存在资源管理错误漏洞。该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。攻击者可利用该漏可能会使用它来导致拒绝服务（系统崩溃）或执行任意代码。
Severity: 中
Patch Name: Linux kernel资源管理错误漏漏洞的补丁
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 4.18.7之前版本中的block/blk-core.c文件的‘__blk_drain_queue()’函数存在资源管理错误漏洞。该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。攻击者可利用该漏可能会使用它来导致拒绝服务（系统崩溃）或执行任意代码。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/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24
Reference: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24
Impacted products
| Name | Linux Linux kernel <4.18.7 |
|---|
{
"cves": {
"cve": {
"cveNumber": "CVE-2018-20856",
"cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2018-20856"
}
},
"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\n\nLinux kernel 4.18.7\u4e4b\u524d\u7248\u672c\u4e2d\u7684block/blk-core.c\u6587\u4ef6\u7684\u2018__blk_drain_queue()\u2019\u51fd\u6570\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u5bf9\u7cfb\u7edf\u8d44\u6e90\uff08\u5982\u5185\u5b58\u3001\u78c1\u76d8\u7a7a\u95f4\u3001\u6587\u4ef6\u7b49\uff09\u7684\u7ba1\u7406\u4e0d\u5f53\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u53ef\u80fd\u4f1a\u4f7f\u7528\u5b83\u6765\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08\u7cfb\u7edf\u5d29\u6e83\uff09\u6216\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
"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/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2019-38525",
"openTime": "2019-10-31",
"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 4.18.7\u4e4b\u524d\u7248\u672c\u4e2d\u7684block/blk-core.c\u6587\u4ef6\u7684\u2018__blk_drain_queue()\u2019\u51fd\u6570\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7f51\u7edc\u7cfb\u7edf\u6216\u4ea7\u54c1\u5bf9\u7cfb\u7edf\u8d44\u6e90\uff08\u5982\u5185\u5b58\u3001\u78c1\u76d8\u7a7a\u95f4\u3001\u6587\u4ef6\u7b49\uff09\u7684\u7ba1\u7406\u4e0d\u5f53\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u53ef\u80fd\u4f1a\u4f7f\u7528\u5b83\u6765\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08\u7cfb\u7edf\u5d29\u6e83\uff09\u6216\u6267\u884c\u4efb\u610f\u4ee3\u7801\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\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6f0f\u6d1e\u7684\u8865\u4e01",
"products": {
"product": "Linux Linux kernel \u003c4.18.7"
},
"referenceLink": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54648cf1ec2d7f4b6a71767799c45676a138ca24",
"serverity": "\u4e2d",
"submitTime": "2019-07-31",
"title": "Linux kernel\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6f0f\u6d1e"
}
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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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