CentOS Linux 7 [TuxCare] 安全性更新：bpftool / kernel / kernel-debug / kernel-debug-devel / kernel-devel / etc 多個弱點 （CENTOS7：CLSA-2024：1730801690）
high Nessus Plugin ID 361566
語言:
概要
CentOS Linux 主機缺少一個或多個安全性更新。說明
CentOS Linux 7 主機安裝的套件會受到 TuxCare CENTOS7：CLSA-2024：1730801690 公告中提及的多個弱點影響。- 以使用者觸發 PCM hw_params 並行呼叫的方式，在 Linux 核心的音效子系統中發現一個釋放後使用缺陷。hw_free ioctls 或類似的爭用情形發生在其他 ioctl 的 ALSA PCM 內。本機使用者可利用此缺陷造成系統當機，或可能提升自己的系統權限。(CVE-2022-1048)
- Linux 核心的 KVM: nVMX 中存在迴歸問題，會引起推測執行攻擊。
因為 KVM (L0) 向 L1 通告 eIBRS 支援，L1 認為在執行 L2 後其不需要 retpolines 或 IBPB，所以 L2 可以對 L1 發動 Spectre v2 攻擊。在 L2 具有程式碼執行權限的攻擊者可在主機的間接分支上執行程式碼。我們建議升級至核心 6.2 或套用相關的穩定反向移植 （v5.4.233、v5.10.170、v5.15.96、v6.1.14）。（CVE-2022-2196）
- 已解決 Linux 核心中的下列弱點：net/mlx5: Discard command completions in internal error Fix use after free when FW completion arrives while device is in internal error state.
Avoid calling completion handler in this case, since the device will flush the command interface and trigger all completions manually. Kernel log: ------------[ cut here ]------------ refcount_t: underflow;
use-after-free. ... RIP: 0010:refcount_warn_saturate+0xd8/0xe0 ... Call Trace: <IRQ> ? __warn+0x79/0x120 ? refcount_warn_saturate+0xd8/0xe0 ? report_bug+0x17c/0x190 ? handle_bug+0x3c/0x60 ? exc_invalid_op+0x14/0x70 ? asm_exc_invalid_op+0x16/0x20 ? refcount_warn_saturate+0xd8/0xe0 cmd_ent_put+0x13b/0x160 [mlx5_core] mlx5_cmd_comp_handler+0x5f9/0x670 [mlx5_core] cmd_comp_notifier+0x1f/0x30 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 mlx5_eq_async_int+0xf6/0x290 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 irq_int_handler+0x19/0x30 [mlx5_core]
__handle_irq_event_percpu+0x4b/0x160 handle_irq_event+0x2e/0x80 handle_edge_irq+0x98/0x230
__common_interrupt+0x3b/0xa0 common_interrupt+0x7b/0xa0 </IRQ> <TASK> asm_common_interrupt+0x22/0x40 (CVE-2024-38555)
- 已解決 Linux 核心中的下列弱點：net/mlx5e: SHAMPO, Fix invalid WQ linked list unlink When all the strides in a WQE have been consumed, the WQE is unlinked from the WQ linked list (mlx5_wq_ll_pop()). For SHAMPO, it is possible to receive CQEs with 0 consumed strides for the same WQE even after the WQE is fully consumed and unlinked. This triggers an additional unlink for the same wqe which corrupts the linked list. Fix this scenario by accepting 0 sized consumed strides without unlinking the WQE again. (CVE-2024-44970)
- 已解決 Linux 核心中的下列弱點：PCI: Add missing bridge lock to pci_bus_lock() One of the true positives that the cfg_access_lock lockdep effort identified is this sequence: WARNING: CPU: 14 PID: 1 at drivers/pci/pci.c:4886 pci_bridge_secondary_bus_reset+0x5d/0x70 RIP:
0010:pci_bridge_secondary_bus_reset+0x5d/0x70 Call Trace: <TASK> ? __warn+0x8c/0x190 ? pci_bridge_secondary_bus_reset+0x5d/0x70 ? report_bug+0x1f8/0x200 ? handle_bug+0x3c/0x70 ? exc_invalid_op+0x18/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? pci_bridge_secondary_bus_reset+0x5d/0x70 pci_reset_bus+0x1d8/0x270 vmd_probe+0x778/0xa10 pci_device_probe+0x95/0x120 Where pci_reset_bus() users are triggering unlocked secondary bus resets. Ironically pci_bus_reset(), several calls down from pci_reset_bus(), uses pci_bus_lock() before issuing the reset which locks everything *but* the bridge itself. For the same motivation as adding: bridge = pci_upstream_bridge(dev); if (bridge) pci_dev_lock(bridge); to pci_reset_function() for the bus and cxl_bus reset cases, add pci_dev_lock() for @bus->self to pci_bus_lock(). [bhelgaas: squash in recursive locking deadlock fix from Keith Busch:
https://lore.kernel.org/r/[email protected]] (CVE-2024-46750)
請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。
解決方案
根據 TuxCare 公告 CENTOS7：CLSA-2024：1730801690 中的指引更新受影響的套件。另請參閱
Plugin 詳細資訊
嚴重性: High
ID: 361566
檔案名稱: tuxcare_centos_7_CLSA-2024-1730801690.nasl
版本: 1.1
類型: Local
代理程式: unix
已發布: 2026/10/1
已更新: 2026/10/1
支援的感應器: Continuous Assessment, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
風險資訊
VPR
風險因素: Medium
分數: 6.9
百分位數: 97.35
Vendor
Vendor Severity: Important
CVSS v2
風險因素: Medium
基本分數: 6.9
時間性分數: 5.1
媒介: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS 評分資料來源: CVE-2022-1048
CVSS v3
風險因素: High
基本分數: 8.8
時間性分數: 7.7
媒介: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
時間媒介: CVSS:3.0/E:U/RL:O/RC:C
CVSS 評分資料來源: CVE-2022-2196
弱點資訊
必要的 KB 項目: Host/OS/extended-third-party, Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list
可輕鬆利用: No known exploits are available
修補程式發佈日期: 2024/11/5
弱點發布日期: 2021/7/21
參考資訊
CVE: CVE-2022-1048, CVE-2022-2196, CVE-2024-38555, CVE-2024-44970, CVE-2024-46750
CLSA: 2024:1730801690