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SUSE-SU-2025:03495-1

Опубликовано: 08 окт. 2025
Источник: suse-cvrf

Описание

Security update for the Linux Kernel RT (Live Patch 10 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-150600_10_34 fixes several issues.

The following security issues were fixed:

  • CVE-2025-38477: net/sched: sch_qfq: Fix race condition on qfq_aggregate (bsc#1247315).
  • CVE-2025-38089: sunrpc: handle SVC_GARBAGE during svc auth processing as auth error (bsc#1245509).

Список пакетов

SUSE Linux Enterprise Live Patching 15 SP6
kernel-livepatch-6_4_0-150600_10_34-rt-7-150600.2.1

Ссылки

Описание

In the Linux kernel, the following vulnerability has been resolved: sunrpc: handle SVC_GARBAGE during svc auth processing as auth error tianshuo han reported a remotely-triggerable crash if the client sends a kernel RPC server a specially crafted packet. If decoding the RPC reply fails in such a way that SVC_GARBAGE is returned without setting the rq_accept_statp pointer, then that pointer can be dereferenced and a value stored there. If it's the first time the thread has processed an RPC, then that pointer will be set to NULL and the kernel will crash. In other cases, it could create a memory scribble. The server sunrpc code treats a SVC_GARBAGE return from svc_authenticate or pg_authenticate as if it should send a GARBAGE_ARGS reply. RFC 5531 says that if authentication fails that the RPC should be rejected instead with a status of AUTH_ERR. Handle a SVC_GARBAGE return as an AUTH_ERROR, with a reason of AUTH_BADCRED instead of returning GARBAGE_ARGS in that case. This sidesteps the whole problem of touching the rpc_accept_statp pointer in this situation and avoids the crash.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_34-rt-7-150600.2.1
Ссылки

Описание

In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_qfq: Fix race condition on qfq_aggregate A race condition can occur when 'agg' is modified in qfq_change_agg (called during qfq_enqueue) while other threads access it concurrently. For example, qfq_dump_class may trigger a NULL dereference, and qfq_delete_class may cause a use-after-free. This patch addresses the issue by: 1. Moved qfq_destroy_class into the critical section. 2. Added sch_tree_lock protection to qfq_dump_class and qfq_dump_class_stats.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_34-rt-7-150600.2.1
Ссылки