CVE-2021-47229— Linux kernel 安全漏洞
影响版本矩阵 14
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 8c39d710363c14ecb09219332869707395d1d495< 400e6b1860c8be61388d0b77814c53260f96e17a | affected |
8c39d710363c14ecb09219332869707395d1d495< b00a9aaa4be20ad6e3311fb78a485eae0899e89a | affected | ||
8c39d710363c14ecb09219332869707395d1d495< 4c90f90a91d75c3c73dd633827c90e8746d9f54d | affected | ||
8c39d710363c14ecb09219332869707395d1d495< 1a1dbc4473974867fe8c5f195c17b341c8e82867 | affected | ||
8c39d710363c14ecb09219332869707395d1d495< 3d213a4ddf49a860be6e795482c17f87e0c82b2a | affected | ||
8c39d710363c14ecb09219332869707395d1d495< f18139966d072dab8e4398c95ce955a9742e04f7 | affected | ||
4.8 | affected | ||
< 4.8 | unaffected | ||
| … +6 条更多 | |||
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一、 漏洞 CVE-2021-47229 基础信息
漏洞信息
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Vulnerability Title
PCI: aardvark: Fix kernel panic during PIO transfer
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: PCI: aardvark: Fix kernel panic during PIO transfer Trying to start a new PIO transfer by writing value 0 in PIO_START register when previous transfer has not yet completed (which is indicated by value 1 in PIO_START) causes an External Abort on CPU, which results in kernel panic: SError Interrupt on CPU0, code 0xbf000002 -- SError Kernel panic - not syncing: Asynchronous SError Interrupt To prevent kernel panic, it is required to reject a new PIO transfer when previous one has not finished yet. If previous PIO transfer is not finished yet, the kernel may issue a new PIO request only if the previous PIO transfer timed out. In the past the root cause of this issue was incorrectly identified (as it often happens during link retraining or after link down event) and special hack was implemented in Trusted Firmware to catch all SError events in EL3, to ignore errors with code 0xbf000002 and not forwarding any other errors to kernel and instead throw panic from EL3 Trusted Firmware handler. Links to discussion and patches about this issue: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/commit/?id=3c7dcdac5c50 https://lore.kernel.org/linux-pci/20190316161243.29517-1-repk@triplefau.lt/ https://lore.kernel.org/linux-pci/971be151d24312cc533989a64bd454b4@www.loen.fr/ https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/1541 But the real cause was the fact that during link retraining or after link down event the PIO transfer may take longer time, up to the 1.44s until it times out. This increased probability that a new PIO transfer would be issued by kernel while previous one has not finished yet. After applying this change into the kernel, it is possible to revert the mentioned TF-A hack and SError events do not have to be caught in TF-A EL3.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
N/A
来源: 美国国家漏洞数据库 NVD
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PIO传输期间内核恐慌。
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-2021-47229 的公开POC
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|---|
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同批安全公告 · Linux · 2024-05-21 · 共 361 条
| CVE-2021-47432 | Linux kernel 安全漏洞 | |
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| CVE-2023-52753 | Linux kernel 安全漏洞 | |
| CVE-2023-52752 | Linux kernel 安全漏洞 | |
| CVE-2023-52751 | Linux kernel 安全漏洞 | |
| CVE-2023-52750 | Linux kernel安全漏洞 | |
| CVE-2023-52749 | Linux kernel 安全漏洞 | |
| CVE-2023-52748 | Linux kernel 安全漏洞 | |
| CVE-2022-48710 | Linux kernel 安全漏洞 | |
| CVE-2023-52742 | Linux kernel安全漏洞 | |
| CVE-2023-52738 | Linux kernel安全漏洞 | |
| CVE-2023-52740 | Linux kernel 安全漏洞 | |
| CVE-2023-52739 | Linux kernel安全漏洞 | |
| CVE-2023-52741 | Linux kernel 安全漏洞 | |
| CVE-2023-52743 | Linux kernel 安全漏洞 | |
| CVE-2023-52746 | Linux kernel 安全漏洞 | |
| CVE-2023-52747 | Linux kernel 安全漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2021-47229
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