CVE-2021-4155
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I. Basic Information for CVE-2021-4155
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
缓冲区大小计算不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Red Hat Enterprise Linux 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Enterprise Linux是美国红帽（Red Hat）公司的面向企业用户的Linux操作系统 Red Hat Enterprise Linux 存在安全漏洞，该漏洞源于在XFS文件系统中的XFS IOC ALLOCSP IOCTL允许大小未对齐的文件增加的方式中发现了一个数据泄漏缺陷。本地攻击者可利用该漏洞可以利用这个漏洞来泄漏XFS文件系统上的数据，否则他们无法访问这些数据。
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 | Fixed in Kernel v5.16 | - |
II. Public POCs for CVE-2021-4155
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://security-tracker.debian.org/tracker/CVE-2021-4155x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=2034813x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2021-4155x_refsource_MISC
- https://www.openwall.com/lists/oss-security/2022/01/10/1x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-4155
Same Patch Batch · n/a · 2022-08-24 · 41 CVEs total
| CVE-2022-25903 | 7.5 HIGH | Denial of Service (DoS) |
| CVE-2022-24375 | 7.5 HIGH | Denial of Service (DoS) |
| CVE-2021-4142 | Red Hat Satellite 授权问题漏洞 | |
| CVE-2021-39815 | Google Android 资源管理错误漏洞 | |
| CVE-2022-20122 | Google Android 资源管理错误漏洞 | |
| CVE-2021-4178 | Kubernetes 代码问题漏洞 | |
| CVE-2021-4209 | GnuTLS 代码问题漏洞 | |
| CVE-2021-4213 | Linux jss 安全漏洞 | |
| CVE-2021-4218 | Linux kernel 安全漏洞 | |
| CVE-2021-4217 | Info-ZIP UnZip 代码问题漏洞 | |
| CVE-2021-4122 | cryptsetup 数据伪造问题漏洞 | |
| CVE-2021-4125 | Red Hat OpenShift 代码问题漏洞 | |
| CVE-2021-0946 | Google Android 缓冲区错误漏洞 | |
| CVE-2021-4158 | QEMU 代码问题漏洞 | |
| CVE-2021-4159 | Linux kernel 安全漏洞 | |
| CVE-2021-4041 | Ansible-Runner 操作系统命令注入漏洞 | |
| CVE-2021-4040 | Red Hat AMQ Broker 缓冲区错误漏洞 | |
| CVE-2022-37181 | 72crm 代码问题漏洞 | |
| CVE-2022-37178 | 72crm SQL注入漏洞 | |
| CVE-2018-14520 | Kirby 跨站脚本漏洞 |
Showing top 20 of 41 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-131
V. Comments for CVE-2021-4155
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