Описание
It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.
A use-after-free flaw was found in route4_change in the net/sched/cls_route.c filter implementation in the Linux kernel. This flaw allows a local user to crash the system and possibly lead to a local privilege escalation problem.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Affected | ||
| Red Hat Enterprise Linux 9 | kernel | Not affected | ||
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Fixed | RHSA-2022:7338 | 02.11.2022 |
| Red Hat Enterprise Linux 7 | kernel | Fixed | RHSA-2022:7337 | 02.11.2022 |
| Red Hat Enterprise Linux 7 | kpatch-patch | Fixed | RHSA-2022:7344 | 02.11.2022 |
| Red Hat Enterprise Linux 7.4 Advanced Update Support | kernel | Fixed | RHSA-2022:7146 | 25.10.2022 |
| Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118) | kernel | Fixed | RHSA-2022:7171 | 25.10.2022 |
| Red Hat Enterprise Linux 7.6 Telco Extended Update Support | kernel | Fixed | RHSA-2022:7171 | 25.10.2022 |
| Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions | kernel | Fixed | RHSA-2022:7171 | 25.10.2022 |
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Дополнительная информация
Статус:
7.8 High
CVSS3
Связанные уязвимости
It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.
It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.
It was discovered that the cls_route filter implementation in the Linu ...
ELSA-2022-9699: Unbreakable Enterprise kernel-container security update (IMPORTANT)
7.8 High
CVSS3