• 公告ID (KylinSec-SA-2024-2125)

摘要:

In the Linux kernel, the following vulnerability has been resolved:

ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down()

As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops
in igmp6_event_query() and igmp6_event_report()")) I think the
synchronize_net() call in ipv6_mc_down() is not needed.

Under load, synchronize_net() can last between 200 usec and 5 ms.

KASAN seems to agree as well.

安全等级: Low

公告ID: KylinSec-SA-2024-2125

发布日期: 2024年5月28日

关联CVE: CVE-2024-27390  

  • 详细介绍

1. 漏洞描述

   

In the Linux kernel, the following vulnerability has been resolved:

ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down()

As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops
in igmp6_event_query() and igmp6_event_report()")) I think the
synchronize_net() call in ipv6_mc_down() is not needed.

Under load, synchronize_net() can last between 200 usec and 5 ms.

KASAN seems to agree as well.

2. 影响范围

cve名称 产品 组件 是否受影响
CVE-2024-27390 KY3.4-4A kernel Unaffected
CVE-2024-27390 KY3.4-5 kernel Unaffected
CVE-2024-27390 KY3.5.1 kernel Unaffected
CVE-2024-27390 KY3.5.3 kernel Unaffected
CVE-2024-27390 V6 kernel Unaffected

3. 影响组件

    无

4. 修复版本

    无

5. 修复方法

   无

6. 下载链接

    无
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