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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="8d79c66e2e82515c6921bbe8aae6c4a1"> </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;"><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-2022-2588，可导致攻击者权获得root权限等危害。</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-2022-2588</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">漏洞由于在Linux kernel 的 net/sched/cls_route.c 过滤器实现的 route4_change 中存在 use-after-free 缺陷导致，若被本地经过身份认证的攻击者利用，可能会导致系统崩溃、权限提升等。</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">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">Linux kernel >= v2.6.12-rc2</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">目前官方已在高版本中修复了该漏洞，请受影响的用户升级至安全版本：</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">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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<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">https://github.com/Markakd/CVE-2022-2588</span></p>
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