CVE-2022-48898— 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 drm/msm/dp 组件在处理中断时存在潜在的竞争条件问题。
可能的 ATT&CK 技术 1 AI
T1564.004 · NTFS File Attributes影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | c943b4948b5848fc0e07f875edbd35a973879e22< 785607e5e6fb52caf141e4580de40405565f04f1 |
affected |
c943b4948b5848fc0e07f875edbd35a973879e22< 984ad875db804948c86ca9e1c2e784ae8252715a |
affected | ||
c943b4948b5848fc0e07f875edbd35a973879e22< b7dcbca46db3c77fdb02c2a9d6239e5aa3b06a59 |
affected | ||
c943b4948b5848fc0e07f875edbd35a973879e22< 1cba0d150fa102439114a91b3e215909efc9f169 |
affected | ||
5.10 |
affected | ||
< 5.10 |
unaffected | ||
5.10.164≤ 5.10.* |
unaffected | ||
5.15.89≤ 5.15.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2022-48898 基础信息
漏洞信息
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Vulnerability Title
drm/msm/dp: do not complete dp_aux_cmd_fifo_tx() if irq is not for aux transfer
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
drm/msm/dp: do not complete dp_aux_cmd_fifo_tx() if irq is not for aux transfer
There are 3 possible interrupt sources are handled by DP controller,
HPDstatus, Controller state changes and Aux read/write transaction.
At every irq, DP controller have to check isr status of every interrupt
sources and service the interrupt if its isr status bits shows interrupts
are pending. There is potential race condition may happen at current aux
isr handler implementation since it is always complete dp_aux_cmd_fifo_tx()
even irq is not for aux read or write transaction. This may cause aux read
transaction return premature if host aux data read is in the middle of
waiting for sink to complete transferring data to host while irq happen.
This will cause host's receiving buffer contains unexpected data. This
patch fixes this problem by checking aux isr and return immediately at
aux isr handler if there are no any isr status bits set.
Current there is a bug report regrading eDP edid corruption happen during
system booting up. After lengthy debugging to found that VIDEO_READY
interrupt was continuously firing during system booting up which cause
dp_aux_isr() to complete dp_aux_cmd_fifo_tx() prematurely to retrieve data
from aux hardware buffer which is not yet contains complete data transfer
from sink. This cause edid corruption.
Follows are the signature at kernel logs when problem happen,
EDID has corrupt header
panel-simple-dp-aux aux-aea0000.edp: Couldn't identify panel via EDID
Changes in v2:
-- do complete if (ret == IRQ_HANDLED) ay dp-aux_isr()
-- add more commit text
Changes in v3:
-- add Stephen suggested
-- dp_aux_isr() return IRQ_XXX back to caller
-- dp_ctrl_isr() return IRQ_XXX back to caller
Changes in v4:
-- split into two patches
Changes in v5:
-- delete empty line between tags
Changes in v6:
-- remove extra "that" and fixed line more than 75 char at commit text
Patchwork: https://patchwork.freedesktop.org/patch/516121/
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 drm/msm/dp 组件在处理中断时存在潜在的竞争条件问题。
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-2022-48898 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2022-48898 其他参考 (3)
同批安全公告 · Linux · 2024-08-21 · 共 68 条
| CVE-2023-52910 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-43881 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48871 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-43878 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48883 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-43882 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-43880 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48892 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-43877 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52913 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48899 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48872 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48873 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48874 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52903 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48887 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-48878 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52907 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52909 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-43872 | 7.5 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 68 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2022-48898
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