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SUSE-SU-2025:03183-1

Опубликовано: 11 сент. 2025
Источник: suse-cvrf

Описание

Security update for the Linux Kernel (Live Patch 42 for SLE 15 SP4)

This update for the Linux Kernel 5.14.21-150400_24_170 fixes one issue.

The following security issue was fixed:

  • CVE-2025-38212: ipc: fix to protect IPCS lookups using RCU (bsc#1246030).

Список пакетов

SUSE Linux Enterprise Live Patching 15 SP4
kernel-livepatch-5_14_21-150400_24_170-default-3-150400.2.1

Ссылки

Описание

In the Linux kernel, the following vulnerability has been resolved: ipc: fix to protect IPCS lookups using RCU syzbot reported that it discovered a use-after-free vulnerability, [0] [0]: https://lore.kernel.org/all/67af13f8.050a0220.21dd3.0038.GAE@google.com/ idr_for_each() is protected by rwsem, but this is not enough. If it is not protected by RCU read-critical region, when idr_for_each() calls radix_tree_node_free() through call_rcu() to free the radix_tree_node structure, the node will be freed immediately, and when reading the next node in radix_tree_for_each_slot(), the already freed memory may be read. Therefore, we need to add code to make sure that idr_for_each() is protected within the RCU read-critical region when we call it in shm_destroy_orphaned().

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_170-default-3-150400.2.1
Ссылки