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</header><main class="static-main"><article class="static-article"><h1>Linux Kernel 权限提升漏洞预警</h1><div class="static-date">2023-03-31</div>
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<div data-version="3.0.0" data-hash="c11d093dc7457991324a7190dffb08e4"> </div>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">尊敬的主题云用户：</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px; text-indent: 21pt;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">您好！ 近日， Linux Kernel 被披露出存在本地提权漏洞，漏洞编号CVE-2022-0847。可导致linux本地提权等危害。</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">【漏洞评级】</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">高风险</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">【漏洞描述】</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">CVE-2022-0847</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">攻击者通过利用此漏洞，可以覆盖任意可读文件中的数据，导致可将普通权限的用户提升至root权限。目前POC、 EXP已公开，风险较高。</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">【影响范围】</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">主题云提供的云服务不受漏洞影响，请您及时安排自检内部自行搭建的环境并做好安全加固。</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">影响版本：</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">5.8 <= Linux kernel < 5.16.11 / 5.15.25 / 5.10.102</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">【修复方案】</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">目前Kernel官方已提供安全版本修复了该漏洞，请受影响的用户及时升级至安全版本：https://www.kernel.org/</span></p>
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<p class="paragraph text-align-type-justify" style="margin: 0pt 0pt 7.8pt; text-align: justify; font-family: 等线; font-size: 12pt; line-height: 24px;"><span style="font-size: 10.5pt; font-family: 宋体; letter-spacing: 0pt; vertical-align: baseline;" data-font-family="宋体">【参考链接】</span></p>
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