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A stack overflow via an infinite recursion vulnerability was found in the eepro100 i8255x device emulator of QEMU. This issue occurs while processing controller commands due to a DMA reentry issue. This flaw allows a guest user or process to consume CPU cycles or crash the QEMU process on the host resulting in a denial of service. The highest threat from this vulnerability is to system availability.
| Reporter | Title | Published | Views | Family All 125 |
|---|---|---|---|---|
 | CVE-2021-20255 | 9 Mar 202119:14 | – | alpinelinux |
 | Astra Linux - уязвимость в qemu | 20 May 202605:53 | – | astralinux |
 | CVE-2021-20255 affecting package qemu for versions less than 6.2.0-18 | 22 Apr 202515:08 | – | cbl_mariner |
| CVE-2021-20255 affecting package qemu-kvm 4.2.0-48 | 6 Apr 202123:50 | – | cbl_mariner |
| CVE-2021-20255 affecting package qemu for versions less than 6.2.0-2 | 3 Jun 202217:54 | – | cbl_mariner |
 | CVE-2021-20255 | 9 Mar 202122:52 | – | circl |
 | QEMU Security Vulnerabilities | 25 Feb 202100:00 | – | cnnvd |
 | CVE-2021-20255 | 9 Mar 202119:14 | – | cve |
 | CVE-2021-20255 | 9 Mar 202119:14 | – | cvelist |
 | [SECURITY] [DLA 2623-1] qemu security update | 10 Apr 202121:21 | – | debian |
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18 Feb 2026 09:37Current
7High risk
Vulners AI Score7
CVSS 22.1
CVSS 3.15.5
EPSS0.00252