CVE-2022-48769— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 efi:runtime 模块避免 Apple x86 机器上的 EFIv2 运行时服务。
可能的 ATT&CK 技术 1 AI
T1556 · Modify Authentication Process影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | d6cf86d8f23253225fe2a763d627ecf7dfee9dae< b0f1cc093bc2493ac259c53766fd2b800e085807 |
affected |
d6cf86d8f23253225fe2a763d627ecf7dfee9dae< 3df52448978802ae15dcebf66beba1029df957b4 |
affected | ||
d6cf86d8f23253225fe2a763d627ecf7dfee9dae< a4085859411c825c321c9b55b8a9dc5a128a6684 |
affected | ||
d6cf86d8f23253225fe2a763d627ecf7dfee9dae< f5390cd0b43c2e54c7cf5506c7da4a37c5cef746 |
affected | ||
13fcf5d1c5fe491aeb0b0f34a46d88134432edb1 |
affected | ||
0c9673834740afdfa7c172b1b19c6b3ec5bc3907 |
affected | ||
8e221a3c057d674e3c1cc4d1d8fe65ac4697104b |
affected | ||
b3ab8b31e8b3c1ff4971bd52d0c8ebde5cfbdb97 |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2022-48769 基础信息
漏洞信息
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Vulnerability Title
efi: runtime: avoid EFIv2 runtime services on Apple x86 machines
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
efi: runtime: avoid EFIv2 runtime services on Apple x86 machines
Aditya reports [0] that his recent MacbookPro crashes in the firmware
when using the variable services at runtime. The culprit appears to be a
call to QueryVariableInfo(), which we did not use to call on Apple x86
machines in the past as they only upgraded from EFI v1.10 to EFI v2.40
firmware fairly recently, and QueryVariableInfo() (along with
UpdateCapsule() et al) was added in EFI v2.00.
The only runtime service introduced in EFI v2.00 that we actually use in
Linux is QueryVariableInfo(), as the capsule based ones are optional,
generally not used at runtime (all the LVFS/fwupd firmware update
infrastructure uses helper EFI programs that invoke capsule update at
boot time, not runtime), and not implemented by Apple machines in the
first place. QueryVariableInfo() is used to 'safely' set variables,
i.e., only when there is enough space. This prevents machines with buggy
firmwares from corrupting their NVRAMs when they run out of space.
Given that Apple machines have been using EFI v1.10 services only for
the longest time (the EFI v2.0 spec was released in 2006, and Linux
support for the newly introduced runtime services was added in 2011, but
the MacbookPro12,1 released in 2015 still claims to be EFI v1.10 only),
let's avoid the EFI v2.0 ones on all Apple x86 machines.
[0] https://lore.kernel.org/all/6D757C75-65B1-468B-842D-10410081A8E4@live.com/
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 efi:runtime 模块避免 Apple x86 机器上的 EFIv2 运行时服务。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2022-48769 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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CVE-2022-48769 其他参考 (4)
同批安全公告 · Linux · 2024-06-20 · 共 67 条
| CVE-2022-48711 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-38620 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2021-47620 | 8.1 HIGH | Linux kernel安全漏洞 |
| CVE-2022-48743 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48720 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48751 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48771 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48716 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48733 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48729 | 7.8 HIGH | Linux kernel安全漏洞 |
| CVE-2022-48759 | 7.8 HIGH | Linux kernel安全漏洞 |
| CVE-2022-48742 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48721 | 7.8 HIGH | Linux kernel安全漏洞 |
| CVE-2022-48762 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48754 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48735 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48726 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48744 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48727 | 7.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48717 | 7.1 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 67 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2022-48769
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