Описание
drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 allows ucma_leave_multicast to access a certain data structure after a cleanup step in ucma_process_join, which allows attackers to cause a denial of service (use-after-free).
A flaw was found in the Linux Kernel in the ucma_leave_multicast() function in drivers/infiniband/core/ucma.c which allows access to a certain data structure after freeing it in ucma_process_join(). This allows an attacker to cause a use-after-free bug and to induce kernel memory corruption, leading to a system crash or other unspecified impact. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Will not fix | ||
| Red Hat Enterprise Linux 6 | kernel | Will not fix | ||
| Red Hat Enterprise Linux 8 | kernel | Not affected | ||
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Fixed | RHSA-2019:2043 | 07.08.2019 |
| Red Hat Enterprise Linux 7 | kernel-alt | Fixed | RHSA-2019:0831 | 23.04.2019 |
| Red Hat Enterprise Linux 7 | kernel | Fixed | RHSA-2019:2029 | 06.08.2019 |
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Дополнительная информация
Статус:
EPSS
5.3 Medium
CVSS3
Связанные уязвимости
drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 allows ucma_leave_multicast to access a certain data structure after a cleanup step in ucma_process_join, which allows attackers to cause a denial of service (use-after-free).
drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 allows ucma_leave_multicast to access a certain data structure after a cleanup step in ucma_process_join, which allows attackers to cause a denial of service (use-after-free).
drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 all ...
Security update for the Linux Kernel (Live Patch 0 for SLE 15)
Security update for the Linux Kernel (Live Patch 1 for SLE 15)
EPSS
5.3 Medium
CVSS3