摘要:
kernel security update
安全等级: High
公告ID: KylinSec-SA-2023-2314
发布日期: 2023年11月17日
关联CVE: CVE-2022-45884 CVE-2023-4623 CVE-2023-39198 CVE-2023-3327
The Linux Kernel, the operating system core itself.
Security Fix(es):
An issue was discovered in the Linux kernel through 6.0.9. drivers/media/dvb-core/dvbdev.c has a use-after-free, related to dvb_register_device dynamically allocating fops.(CVE-2022-45884)
Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2023-35823. Reason: This candidate is a reservation duplicate of CVE-2023-35823. Notes: All CVE users should reference CVE-2023-35823 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage.(CVE-2023-3327)
A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.(CVE-2023-39198)
A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation.
If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free.
We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.
(CVE-2023-4623)
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2022-45884 | KY3.4-5A | kernel | Fixed |
| CVE-2023-4623 | KY3.4-5A | kernel | Fixed |
| CVE-2023-39198 | KY3.4-5A | kernel | Fixed |
| CVE-2023-3327 | KY3.4-5A | kernel | Fixed |
| 软件名称 | 架构 | 版本号 |
|---|---|---|
| kernel-devel | x86_64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| kernel-tools-devel | x86_64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| perf | x86_64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| kernel-tools | x86_64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| bpftool | x86_64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| python2-perf | x86_64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| python3-perf | x86_64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| kernel | x86_64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| kernel-source | x86_64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| python2-perf | aarch64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| kernel | aarch64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| kernel-devel | aarch64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| kernel-tools-devel | aarch64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| bpftool | aarch64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| kernel-tools | aarch64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| kernel-source | aarch64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| perf | aarch64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
| python3-perf | aarch64 | 4.19.90-2403.1.0.0268.kb1.ky3_4 |
方法一：下载安装包进行升级安装
1、通过下载链接下载需要升级的升级包保存，如 xxx.rpm
2、通过rpm命令升级，如 rpm -Uvh xxx.rpm
方法二：通过软件源进行升级安装
1、保持能够连接上互联网
2、通过yum命令升级指定的包，如 yum install 包名
