| 标题 | Kernel: use-after-free in route4_change() in net/sched/cls_route.c |
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| 描述 | A flaw was found in the "Routing decision" classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition. This flaw allows unprivileged local users to escalate their privileges on the system.
This flaw is rated as having Moderate impact (Red Hat Enterprise Linux 7 and lower) because of the need to have CAP_NET_ADMIN privileges and that Red Hat Enterprise Linux 7 disabled unprivileged user/network namespaces by default. This flaw is rated as having Important impact (Red Hat Enterprise Linux 8) because Red Hat Enterprise Linux 8 enabled unprivileged user/network namespaces by default which can be used to gain CAP_NET_ADMIN privileges in corresponding user namespace even for otherwise unprivileged local user and thus exercise this vulnerability.
CVE-2021-3715 / CWE-416
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| 来源 | ⚠️ https://access.redhat.com/security/cve/CVE-2021-3715 |
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| 用户 | misc (UID 3) |
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| 提交 | 2021-10-18 08時34分 (5 年前) |
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| 管理 | 2021-10-18 08時38分 (4 minutes later) |
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| 状态 | 已接受 |
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| VulDB条目 | 184524 [Linux Kernel Traffic Control Networking Subsystem net/sched/cls_route.c route4_change 内存损坏] |
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| 积分 | 20 |
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