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SUSE-SU-2025:3886-1

Опубликовано: 31 окт. 2025
Источник: suse-cvrf

Описание

Security update for the Linux Kernel RT (Live Patch 0 for SLE 15 SP7)

This update for the Linux Kernel 6.4.0-150700_5 fixes several issues.

The following security issues were fixed:

  • CVE-2025-38664: ice: Fix a null pointer dereference in ice_copy_and_init_pkg() (bsc#1248631).
  • CVE-2025-38511: drm/xe/pf: Clear all LMTT pages on alloc (bsc#1248176).
  • CVE-2025-38617: net/packet: fix a race in packet_set_ring() and packet_notifier() (bsc#1249208).
  • CVE-2025-38453: kABI: io_uring: msg_ring ensure io_kiocb freeing is deferred (bsc#1247737).
  • CVE-2025-38618: vsock: Do not allow binding to VMADDR_PORT_ANY (bsc#1249207).

Список пакетов

SUSE Linux Enterprise Live Patching 15 SP7
kernel-livepatch-6_4_0-150700_5-rt-7-150700.5.1

Ссылки

Описание

In the Linux kernel, the following vulnerability has been resolved: io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU syzbot reports that defer/local task_work adding via msg_ring can hit a request that has been freed: CPU: 1 UID: 0 PID: 19356 Comm: iou-wrk-19354 Not tainted 6.16.0-rc4-syzkaller-00108-g17bbde2e1716 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: <TASK> dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 io_req_local_work_add io_uring/io_uring.c:1184 [inline] __io_req_task_work_add+0x589/0x950 io_uring/io_uring.c:1252 io_msg_remote_post io_uring/msg_ring.c:103 [inline] io_msg_data_remote io_uring/msg_ring.c:133 [inline] __io_msg_ring_data+0x820/0xaa0 io_uring/msg_ring.c:151 io_msg_ring_data io_uring/msg_ring.c:173 [inline] io_msg_ring+0x134/0xa00 io_uring/msg_ring.c:314 __io_issue_sqe+0x17e/0x4b0 io_uring/io_uring.c:1739 io_issue_sqe+0x165/0xfd0 io_uring/io_uring.c:1762 io_wq_submit_work+0x6e9/0xb90 io_uring/io_uring.c:1874 io_worker_handle_work+0x7cd/0x1180 io_uring/io-wq.c:642 io_wq_worker+0x42f/0xeb0 io_uring/io-wq.c:696 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> which is supposed to be safe with how requests are allocated. But msg ring requests alloc and free on their own, and hence must defer freeing to a sane time. Add an rcu_head and use kfree_rcu() in both spots where requests are freed. Only the one in io_msg_tw_complete() is strictly required as it has been visible on the other ring, but use it consistently in the other spot as well. This should not cause any other issues outside of KASAN rightfully complaining about it.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_5-rt-7-150700.5.1
Ссылки

Описание

In the Linux kernel, the following vulnerability has been resolved: drm/xe/pf: Clear all LMTT pages on alloc Our LMEM buffer objects are not cleared by default on alloc and during VF provisioning we only setup LMTT PTEs for the actually provisioned LMEM range. But beyond that valid range we might leave some stale data that could either point to some other VFs allocations or even to the PF pages. Explicitly clear all new LMTT page to avoid the risk that a malicious VF would try to exploit that gap. While around add asserts to catch any undesired PTE overwrites and low-level debug traces to track LMTT PT life-cycle. (cherry picked from commit 3fae6918a3e27cce20ded2551f863fb05d4bef8d)

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_5-rt-7-150700.5.1
Ссылки

Описание

In the Linux kernel, the following vulnerability has been resolved: net/packet: fix a race in packet_set_ring() and packet_notifier() When packet_set_ring() releases po->bind_lock, another thread can run packet_notifier() and process an NETDEV_UP event. This race and the fix are both similar to that of commit 15fe076edea7 ("net/packet: fix a race in packet_bind() and packet_notifier()"). There too the packet_notifier NETDEV_UP event managed to run while a po->bind_lock critical section had to be temporarily released. And the fix was similarly to temporarily set po->num to zero to keep the socket unhooked until the lock is retaken. The po->bind_lock in packet_set_ring and packet_notifier precede the introduction of git history.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_5-rt-7-150700.5.1
Ссылки

Описание

In the Linux kernel, the following vulnerability has been resolved: vsock: Do not allow binding to VMADDR_PORT_ANY It is possible for a vsock to autobind to VMADDR_PORT_ANY. This can cause a use-after-free when a connection is made to the bound socket. The socket returned by accept() also has port VMADDR_PORT_ANY but is not on the list of unbound sockets. Binding it will result in an extra refcount decrement similar to the one fixed in fcdd2242c023 (vsock: Keep the binding until socket destruction). Modify the check in __vsock_bind_connectible() to also prevent binding to VMADDR_PORT_ANY.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_5-rt-7-150700.5.1
Ссылки

Описание

In the Linux kernel, the following vulnerability has been resolved: ice: Fix a null pointer dereference in ice_copy_and_init_pkg() Add check for the return value of devm_kmemdup() to prevent potential null pointer dereference.

Затронутые продукты
SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_5-rt-7-150700.5.1
Ссылки
Уязвимость SUSE-SU-2025:3886-1