CVE-2021-3748
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I. Basic Information for CVE-2021-3748
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
QEMU 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。 QEMU 存在资源管理错误漏洞，目前尚无此漏洞的更多信息，请随时关注CNNVD或厂商公告。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | QEMU (virtio-net) | Affects qemu v0.10.0 and above, Fixed In – v6.2.0-rc0 and above. | - |
II. Public POCs for CVE-2021-3748
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://security.netapp.com/advisory/ntap-20220425-0004/x_refsource_CONFIRM
- https://ubuntu.com/security/CVE-2021-3748x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=1998514x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-3748
Same Patch Batch · n/a · 2022-03-23 · 65 CVEs total
| CVE-2022-27192 | Aseco Lietuva document management system DVS Avilys 日志信息泄露漏洞 | |
| CVE-2022-27077 | Tenda M3 命令注入漏洞 | |
| CVE-2022-27080 | Tenda M3 命令注入漏洞 | |
| CVE-2022-27079 | Tenda M3 命令注入漏洞 | |
| CVE-2022-27078 | Tenda M3 命令注入漏洞 | |
| CVE-2020-20096 | Meta Facebook Messenger 安全漏洞 | |
| CVE-2020-20095 | Apple iMessage iOS 安全漏洞 | |
| CVE-2020-20094 | Meta Facebook Messenger 安全漏洞 | |
| CVE-2020-20093 | Meta Facebook Messenger 安全漏洞 | |
| CVE-2022-25041 | OpenEMR 安全漏洞 | |
| CVE-2022-25267 | Passwork On-Premise Edition 路径遍历漏洞 | |
| CVE-2022-24934 | Kingsoft WPS 代码注入漏洞 | |
| CVE-2022-22819 | Nxp Semiconductors Nxp Lpc55S69 安全漏洞 | |
| CVE-2022-27254 | Honda Civic 安全漏洞 | |
| CVE-2022-23881 | ZZZCMS zzzphp 安全漏洞 | |
| CVE-2022-23880 | Taocms 代码问题漏洞 | |
| CVE-2022-22952 | VMware Carbon Black App Control 代码问题漏洞 | |
| CVE-2022-22951 | VMware Carbon Black App Control 操作系统命令注入漏洞 | |
| CVE-2021-4150 | Linux kernel 资源管理错误漏洞 | |
| CVE-2021-4149 | Linux kernel 竞争条件问题漏洞 |
Showing top 20 of 65 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: n/a
- CVE-2026-8747
Z-BlogPHP Commend Approval c_system_event.php CheckComment i - CVE-2026-8746
Open5GS NRF nghttp2-server.c discover_handler use after free - CVE-2026-8745
Open5GS AUSF nausf-handler.c ogs_timer_add denial of service - CVE-2026-8744
Open5GS NRF context.c ogs_sbi_nf_service_add denial of servi - CVE-2026-8743
Open5GS AMF/MME context.c ran_ue_find_by_amf_ue_ngap_id impr
Same weakness: CWE-416
V. Comments for CVE-2021-3748
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