最近收到了服务器有漏洞的通知，提示：RHSA-2021:0339:linux-firmware安全更新，接下来吾爱编程就为大家介绍一下linux-firmware安全更新的方法，有需要的小伙伴可以参考一下：
1、漏洞提示：
RHSA-2021:0339: linux-firmware 安全更新
2、漏洞描述：
| 漏洞编号 | 漏洞公告 | 漏洞描述 |
| CVE-2020-12321 | Intel Wireless Bluetooth不正确的缓冲区限制漏洞 | Intel Wireless Bluetooth 21.110之前版本中存在不正确的缓冲区限制，可能会允许未经身份验证的用户通过相邻访问启用权限提升。 |
3、影响说明：
软件：iwl100-firmware 39.31.5.1-76.el7 命中：iwl100-firmware version less than 0:39.31.5.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-100-5.ucode
软件：iwl1000-firmware 39.31.5.1-76.el7 命中：iwl1000-firmware version less than 1:39.31.5.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-1000-3.ucode
软件：iwl105-firmware 18.168.6.1-76.el7 命中：iwl105-firmware version less than 0:18.168.6.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-105-6.ucode
软件：iwl135-firmware 18.168.6.1-76.el7 命中：iwl135-firmware version less than 0:18.168.6.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-135-6.ucode
软件：iwl2000-firmware 18.168.6.1-76.el7 命中：iwl2000-firmware version less than 0:18.168.6.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-2000-6.ucode
软件：iwl2030-firmware 18.168.6.1-76.el7 命中：iwl2030-firmware version less than 0:18.168.6.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-2030-6.ucode
软件：iwl3160-firmware 25.30.13.0-76.el7 命中：iwl3160-firmware version less than 0:25.30.13.0-80.el7_9 路径：/usr/lib/firmware/iwlwifi-3160-10.ucode
软件：iwl3945-firmware 15.32.2.9-76.el7 命中：iwl3945-firmware version less than 0:15.32.2.9-80.el7_9 路径：/usr/lib/firmware/iwlwifi-3945-2.ucode
软件：iwl4965-firmware 228.61.2.24-76.el7 命中：iwl4965-firmware version less than 0:228.61.2.24-80.el7_9 路径：/usr/lib/firmware/iwlwifi-4965-2.ucode
软件：iwl5000-firmware 8.83.5.1_1-76.el7 命中：iwl5000-firmware version less than 0:8.83.5.1_1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-5000-1.ucode
软件：iwl5150-firmware 8.24.2.2-76.el7 命中：iwl5150-firmware version less than 0:8.24.2.2-80.el7_9 路径：/usr/lib/firmware/iwlwifi-5150-2.ucode
软件：iwl6000-firmware 9.221.4.1-76.el7 命中：iwl6000-firmware version less than 0:9.221.4.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-6000-4.ucode
软件：iwl6000g2a-firmware 18.168.6.1-76.el7 命中：iwl6000g2a-firmware version less than 0:18.168.6.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-6000g2a-5.ucode
软件：iwl6000g2b-firmware 18.168.6.1-76.el7 命中：iwl6000g2b-firmware version less than 0:18.168.6.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-6000g2b-5.ucode
软件：iwl6050-firmware 41.28.5.1-76.el7 命中：iwl6050-firmware version less than 0:41.28.5.1-80.el7_9 路径：/usr/lib/firmware/iwlwifi-6050-4.ucode
软件：iwl7260-firmware 25.30.13.0-76.el7 命中：iwl7260-firmware version less than 0:25.30.13.0-80.el7_9 路径：/usr/lib/firmware/iwlwifi-7260-10.ucode
软件：linux-firmware 20191203-76.gite8a0f4c.el7 命中：linux-firmware version less than 0:20200421-80.git78c0348.el7_9 路径：/usr/lib/firmware
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