CVE-2021-4157
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I. Basic Information for CVE-2021-4157
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
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存在缓冲区错误漏洞，该漏洞源于用户使用镜像的方式中存在内存溢出缺陷。有权访问 NFS 挂载的用户利用该漏洞可以使系统崩溃或提升系统权限。
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 |
|---|---|---|---|---|
| - | kernel | kernel 5.13-rc1 | - |
II. Public POCs for CVE-2021-4157
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://security.netapp.com/advisory/ntap-20220602-0007/x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=2034342x_refsource_MISC
- https://www.oracle.com/security-alerts/cpujul2022.htmlx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-4157
Same Patch Batch · n/a · 2022-03-25 · 53 CVEs total
| CVE-2022-25582 | ClassCMS 跨站脚本漏洞 | |
| CVE-2022-0897 | Red Hat libvirt 安全漏洞 | |
| CVE-2022-0435 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-3933 | ILM OpenEXR 输入验证错误漏洞 | |
| CVE-2021-4203 | Linux kernel 资源管理错误漏洞 | |
| CVE-2021-4147 | Red Hat libvirt 安全漏洞 | |
| CVE-2021-3941 | ILM OpenEXR 数字错误漏洞 | |
| CVE-2022-0330 | Linux kernel 缓冲区错误漏洞 | |
| CVE-2021-43091 | YesWiki SQL注入漏洞 | |
| CVE-2022-25577 | ALF-BanCo 信任管理问题漏洞 | |
| CVE-2022-25574 | DouPHP 跨站脚本漏洞 | |
| CVE-2022-26263 | Yonyou u8 跨站脚本漏洞 | |
| CVE-2022-27881 | OpenBSD 安全漏洞 | |
| CVE-2022-27882 | OpenBSD 安全漏洞 | |
| CVE-2021-43636 | TotoLink T10 安全漏洞 | |
| CVE-2021-22100 | cloud foundry 资源管理错误漏洞 | |
| CVE-2021-4202 | Linux kernel 资源管理错误漏洞 | |
| CVE-2021-20290 | OpenSC 安全漏洞 | |
| CVE-2021-3567 | SUSE OpenStack Cloud 缓冲区错误漏洞 | |
| CVE-2021-3582 | QEMU 缓冲区错误漏洞 |
Showing top 20 of 53 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: kernel
- CVE-2025-26604
Possibility to retrieve bot token by malicious module develo - CVE-2021-35000
OpenBSD Kernel Multicast Routing Uninitialized Memory Inform - CVE-2021-34999
OpenBSD Kernel Multicast Routing Uninitialized Memory Inform - CVE-2021-34981
Linux Kernel Bluetooth CMTP Module Double Free Privilege Esc - CVE-2024-24898
Information Leakage in kernel
Same vendor: n/a
- CVE-2026-8276
bettercap MySQL Server mysql_server.go integer coercion - CVE-2026-8275
bettercap zerogod IPP Service zerogod_ipp_primitives.go ippR - CVE-2026-8270
Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service
Same weakness: CWE-119
- CVE-2026-22167
GPU DDK - Cache resident PM buffers writable by other GPU re - CVE-2026-27890
Firebird has Pre-Auth DOS when Processing Out of Order CNCT_ - CVE-2026-34864
Huawei HarmonyOS 安全漏洞 - CVE-2026-4149
Sonos Era 300 SMB Response Out-Of-Bounds Access Remote Code - CVE-2026-34988
Wasmtime leaks data between pooling allocator instances
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