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AlmaLinux 9.6 [TuxCare] 安全更新：kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / 等多个漏洞 （ALMALINUX9.6：CLSA-2026：1793370479）

high Nessus 插件 ID 374299

语言：

简介

AlmaLinux 主机缺少一个或多个安全更新。

描述

AlmaLinux 9.6 主机上存在安装的程序包，该程序包受到 TuxCare ALMALINUX9.6：CLSA-2026：1793370479公告中提及的多个漏洞的影响。

 - 已修复 Linux 内核中的下列漏洞：wifi: ath12k: Fix buffer overflow in debugfs If the user tries to write more than 32 bytes then it results in memory corruption. Fortunately, this is debugfs so it's limited to root users. (CVE-2025-38317)

 - 已修复 Linux 内核中的下列漏洞：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) (CVE-2025-38511)

 - 已修复 Linux 内核中的下列漏洞：wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event Currently, in ath12k_service_ready_ext_event(), svc_rdy_ext.mac_phy_caps is not freed in the failure case, causing a memory leak. The following trace is observed in kmemleak:
 unreferenced object 0xffff8b3eb5789c00 (size 1024): comm softirq, pid 0, jiffies 4294942577 hex dump (first 32 bytes): 00 00 00 00 01 00 00 00 00 00 00 00 7b 00 00 10 ............{... 01 00 00 00 00 00 00 00 01 00 00 00 1f 38 00 00 .............8.. backtrace (crc 44e1c357): __kmalloc_noprof+0x30b/0x410 ath12k_wmi_mac_phy_caps_parse+0x84/0x100 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_wmi_svc_rdy_ext_parse+0x308/0x4c0 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_service_ready_ext_event.isra.0+0x44/0xd0 [ath12k] ath12k_wmi_op_rx+0x2eb/0xd70 [ath12k] ath12k_htc_rx_completion_handler+0x1f4/0x330 [ath12k] ath12k_ce_recv_process_cb+0x218/0x300 [ath12k] ath12k_pci_ce_workqueue+0x1b/0x30 [ath12k] process_one_work+0x219/0x680 bh_worker+0x198/0x1f0 tasklet_action+0x13/0x30 handle_softirqs+0xca/0x460 __irq_exit_rcu+0xbe/0x110 irq_exit_rcu+0x9/0x30 Free svc_rdy_ext.mac_phy_caps in the error case to fix this memory leak. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1 (CVE-2025-39890)

 - 已修复 Linux 内核中的下列漏洞：bpf: Fix metadata_dst leak
 __bpf_redirect_neigh_v{4,6} Cilium has a BPF egress gateway feature which forces outgoing K8s Pod traffic to pass through dedicated egress gateways which then SNAT the traffic in order to interact with stable IPs outside the cluster. The traffic is directed to the gateway via vxlan tunnel in collect md mode. A recent BPF change utilized the bpf_redirect_neigh() helper to forward packets after the arrival and decap on vxlan, which turned out over time that the kmalloc-256 slab usage in kernel was ever-increasing. The issue was that vxlan allocates the metadata_dst object and attaches it through a fake dst entry to the skb. The latter was never released though given bpf_redirect_neigh() was merely setting the new dst entry via skb_dst_set() without dropping an existing one first. (CVE-2025-40183)

 - 已修复 Linux 内核中的下列漏洞：mlxsw: spectrum_router: Fix neighbour use-after-free We sometimes observe use-after-free when dereferencing a neighbour [1]. The problem seems to be that the driver stores a pointer to the neighbour, but without holding a reference on it. A reference is only taken when the neighbour is used by a nexthop. Fix by simplifying the reference counting scheme. Always take a reference when storing a neighbour pointer in a neighbour entry. Avoid taking a referencing when the neighbour is used by a nexthop as the neighbour entry associated with the nexthop already holds a reference. Tested by running the test that uncovered the problem over 300 times. Without this patch the problem was reproduced after a handful of iterations. [1] BUG: KASAN: slab-use-after-free in mlxsw_sp_neigh_entry_update+0x2d4/0x310 Read of size 8 at addr ffff88817f8e3420 by task ip/3929 CPU: 3 UID: 0 PID: 3929 Comm: ip Not tainted 6.18.0-rc4-virtme-g36b21a067510 #3 PREEMPT(full) Hardware name:
 Nvidia SN5600/VMOD0013, BIOS 5.13 05/31/2023 Call Trace: <TASK> dump_stack_lvl+0x6f/0xa0 print_address_description.constprop.0+0x6e/0x300 print_report+0xfc/0x1fb kasan_report+0xe4/0x110 mlxsw_sp_neigh_entry_update+0x2d4/0x310 mlxsw_sp_router_rif_gone_sync+0x35f/0x510 mlxsw_sp_rif_destroy+0x1ea/0x730 mlxsw_sp_inetaddr_port_vlan_event+0xa1/0x1b0
 __mlxsw_sp_inetaddr_lag_event+0xcc/0x130 __mlxsw_sp_inetaddr_event+0xf5/0x3c0 mlxsw_sp_router_netdevice_event+0x1015/0x1580 notifier_call_chain+0xcc/0x150 call_netdevice_notifiers_info+0x7e/0x100 __netdev_upper_dev_unlink+0x10b/0x210 netdev_upper_dev_unlink+0x79/0xa0 vrf_del_slave+0x18/0x50 do_set_master+0x146/0x7d0 do_setlink.isra.0+0x9a0/0x2880 rtnl_newlink+0x637/0xb20 rtnetlink_rcv_msg+0x6fe/0xb90 netlink_rcv_skb+0x123/0x380 netlink_unicast+0x4a3/0x770 netlink_sendmsg+0x75b/0xc90
 __sock_sendmsg+0xbe/0x160 ____sys_sendmsg+0x5b2/0x7d0 ___sys_sendmsg+0xfd/0x180 __sys_sendmsg+0x124/0x1c0 do_syscall_64+0xbb/0xfd0 entry_SYSCALL_64_after_hwframe+0x4b/0x53 [...] Allocated by task 109:
 kasan_save_stack+0x30/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7b/0x90
 __kmalloc_noprof+0x2c1/0x790 neigh_alloc+0x6af/0x8f0 ___neigh_create+0x63/0xe90 mlxsw_sp_nexthop_neigh_init+0x430/0x7e0 mlxsw_sp_nexthop_type_init+0x212/0x960 mlxsw_sp_nexthop6_group_info_init.constprop.0+0x81f/0x1280 mlxsw_sp_nexthop6_group_get+0x392/0x6a0 mlxsw_sp_fib6_entry_create+0x46a/0xfd0 mlxsw_sp_router_fib6_replace+0x1ed/0x5f0 mlxsw_sp_router_fib6_event_work+0x10a/0x2a0 process_one_work+0xd57/0x1390 worker_thread+0x4d6/0xd40 kthread+0x355/0x5b0 ret_from_fork+0x1d4/0x270 ret_from_fork_asm+0x11/0x20 Freed by task 154:
 kasan_save_stack+0x30/0x50 kasan_save_track+0x14/0x30 __kasan_save_free_info+0x3b/0x60
 __kasan_slab_free+0x43/0x70 kmem_cache_free_bulk.part.0+0x1eb/0x5e0 kvfree_rcu_bulk+0x1f2/0x260 kfree_rcu_work+0x130/0x1b0 process_one_work+0xd57/0x1390 worker_thread+0x4d6/0xd40 kthread+0x355/0x5b0 ret_from_fork+0x1d4/0x270 ret_from_fork_asm+0x11/0x20 Last potentially related work creation:
 kasan_save_stack+0x30/0x50 kasan_record_aux_stack+0x8c/0xa0 kvfree_call_rcu+0x93/0x5b0 mlxsw_sp_router_neigh_event_work+0x67d/0x860 process_one_work+0xd57/0x1390 worker_thread+0x4d6/0xd40 kthread+0x355/0x5b0 ret_from_fork+0x1d4/0x270 ret_from_fork_asm+0x11/0x20 (CVE-2025-68801)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

解决方案

根据 TuxCare 公告 ALMALINUX9.6：CLSA-2026：1793370479 中的指南更新受影响的程序包。

另见

https://cve.tuxcare.com/els/releases/CLSA-2026:1793370479

http://www.nessus.org/u?1172976a

插件详情

严重性: High

ID: 374299

文件名: tuxcare_alma_linux_9.6_CLSA-2026-1793370479.nasl

版本: 1.1

类型: Local

发布时间: 2026/10/30

最近更新时间: 2026/10/30

支持的传感器: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

风险信息

VPR

风险因素: High

分数: 8.9

百分位: 99.72

Vendor

Vendor Severity: Critical

CVSS v2

风险因素: Medium

基本分数: 6.8

时间分数: 5.3

矢量: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS 分数来源: CVE-2026-64365

CVSS v3

风险因素: High

基本分数: 7.8

时间分数: 7

矢量: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

时间矢量: CVSS:3.0/E:P/RL:O/RC:C

漏洞信息

必需的 KB 项: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/OS/extended-third-party

可利用: true

易利用性: Exploits are available

补丁发布日期: 2026/10/30

漏洞发布日期: 2021/7/21

参考资料信息

CVE: CVE-2023-53695, CVE-2023-54051, CVE-2023-54134, CVE-2023-54218, CVE-2025-21651, CVE-2025-37973, CVE-2025-38246, CVE-2025-38253, CVE-2025-38284, CVE-2025-38291, CVE-2025-38317, CVE-2025-38440, CVE-2025-38505, CVE-2025-38511, CVE-2025-38590, CVE-2025-38621, CVE-2025-39791, CVE-2025-39890, CVE-2025-40060, CVE-2025-40086, CVE-2025-40123, CVE-2025-40160, CVE-2025-40183, CVE-2025-40345, CVE-2025-68173, CVE-2025-68321, CVE-2025-68353, CVE-2025-68374, CVE-2025-68801, CVE-2026-100070, CVE-2026-100071, CVE-2026-100079, CVE-2026-23035, CVE-2026-31426, CVE-2026-31436, CVE-2026-31453, CVE-2026-31502, CVE-2026-43009, CVE-2026-43042, CVE-2026-43053, CVE-2026-43172, CVE-2026-43214, CVE-2026-43441, CVE-2026-43477, CVE-2026-45877, CVE-2026-45888, CVE-2026-45923, CVE-2026-46003, CVE-2026-46014, CVE-2026-46026, CVE-2026-46059, CVE-2026-46090, CVE-2026-46204, CVE-2026-46253, CVE-2026-46315, CVE-2026-52917, CVE-2026-53000, CVE-2026-53064, CVE-2026-53106, CVE-2026-53150, CVE-2026-53151, CVE-2026-53394, CVE-2026-63845, CVE-2026-63853, CVE-2026-63886, CVE-2026-63899, CVE-2026-63900, CVE-2026-63903, CVE-2026-63913, CVE-2026-63917, CVE-2026-63921, CVE-2026-63926, CVE-2026-63956, CVE-2026-63957, CVE-2026-63963, CVE-2026-63968, CVE-2026-63984, CVE-2026-64036, CVE-2026-64052, CVE-2026-64076, CVE-2026-64144, CVE-2026-64184, CVE-2026-64187, CVE-2026-64191, CVE-2026-64192, CVE-2026-64227, CVE-2026-64232, CVE-2026-64247, CVE-2026-64290, CVE-2026-64334, CVE-2026-64336, CVE-2026-64365, CVE-2026-64370, CVE-2026-64412, CVE-2026-64472, CVE-2026-64490, CVE-2026-64510, CVE-2026-64512, CVE-2026-64513, CVE-2026-64543, CVE-2026-68081, CVE-2026-68105, CVE-2026-68325, CVE-2026-68329, CVE-2026-68374, CVE-2026-68418, CVE-2026-68476, CVE-2026-68479, CVE-2026-72012, CVE-2026-72035, CVE-2026-72036, CVE-2026-72051, CVE-2026-72052, CVE-2026-72061, CVE-2026-72099, CVE-2026-72103, CVE-2026-72106, CVE-2026-72107, CVE-2026-72108, CVE-2026-72243, CVE-2026-72250, CVE-2026-72256, CVE-2026-72282, CVE-2026-72310, CVE-2026-72316, CVE-2026-72318, CVE-2026-72348, CVE-2026-72352, CVE-2026-72397, CVE-2026-72400, CVE-2026-72420, CVE-2026-72434, CVE-2026-72435, CVE-2026-72440, CVE-2026-72487, CVE-2026-72495, CVE-2026-72502, CVE-2026-74258, CVE-2026-74288, CVE-2026-74291, CVE-2026-74312, CVE-2026-74334, CVE-2026-74354, CVE-2026-74355, CVE-2026-74376, CVE-2026-74384, CVE-2026-74386, CVE-2026-74397, CVE-2026-74398, CVE-2026-74404, CVE-2026-74424, CVE-2026-74471, CVE-2026-74574, CVE-2026-74585, CVE-2026-74607, CVE-2026-74616, CVE-2026-74625, CVE-2026-74658, CVE-2026-74718, CVE-2026-74739, CVE-2026-80574, CVE-2026-80580, CVE-2026-80605, CVE-2026-80714, CVE-2026-80738, CVE-2026-80963, CVE-2026-80973, CVE-2026-81007, CVE-2026-81016, CVE-2026-89438, CVE-2026-89442, CVE-2026-89483, CVE-2026-89484, CVE-2026-89544, CVE-2026-89557, CVE-2026-89558, CVE-2026-89573, CVE-2026-89587, CVE-2026-89589, CVE-2026-89653, CVE-2026-89658, CVE-2026-89688, CVE-2026-89703, CVE-2026-89719, CVE-2026-89744, CVE-2026-89777, CVE-2026-89817, CVE-2026-89822, CVE-2026-89855, CVE-2026-89927, CVE-2026-89929, CVE-2026-89968, CVE-2026-89997, CVE-2026-90097, CVE-2026-90139, CVE-2026-90141, CVE-2026-90186, CVE-2026-90207, CVE-2026-90218, CVE-2026-90247, CVE-2026-90285, CVE-2026-90313, CVE-2026-90336, CVE-2026-90343, CVE-2026-90359, CVE-2026-90385, CVE-2026-90388, CVE-2026-92507, CVE-2026-92510, CVE-2026-92511, CVE-2026-92521, CVE-2026-92522, CVE-2026-93213, CVE-2026-93222, CVE-2026-93261, CVE-2026-93264, CVE-2026-93287, CVE-2026-93808, CVE-2026-93827, CVE-2026-97409, CVE-2026-97450, CVE-2026-97451, CVE-2026-97452, CVE-2026-97456, CVE-2026-97481, CVE-2026-97483, CVE-2026-97508, CVE-2026-97517, CVE-2026-97528, CVE-2026-97609, CVE-2026-97923, CVE-2026-97960, CVE-2026-97997, CVE-2026-98048, CVE-2026-98058, CVE-2026-98078, CVE-2026-98095, CVE-2026-98111, CVE-2026-98128, CVE-2026-98151, CVE-2026-98167, CVE-2026-98168, CVE-2026-98204, CVE-2026-98216, CVE-2026-98222, CVE-2026-98270, CVE-2026-98322, CVE-2026-98339, CVE-2026-98358, CVE-2026-98366, CVE-2026-98377, CVE-2026-98405, CVE-2026-98432, CVE-2026-98451, CVE-2026-98479, CVE-2026-98487, CVE-2026-98512, CVE-2026-98538, CVE-2026-98547, CVE-2026-98549, CVE-2026-98590, CVE-2026-98599, CVE-2026-98601, CVE-2026-98608, CVE-2026-98622, CVE-2026-98623, CVE-2026-98631, CVE-2026-98644, CVE-2026-98647, CVE-2026-98687, CVE-2026-98714, CVE-2026-98715, CVE-2026-98732, CVE-2026-98741, CVE-2026-98760, CVE-2026-98772, CVE-2026-98819, CVE-2026-98892, CVE-2026-98893, CVE-2026-99006

CLSA: 2026:1793370479