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CVE-2025-58183— Unbounded allocation when parsing GNU sparse map in archive/tar

Quick assessment

Affected
Go standard library archive/tar
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google Golang是美国谷歌（Google）公司的一种静态强类型、编译型语言。Go的语法接近C语言，但对于变量的声明有所不同。Go支持垃圾回收功能。Go的并行模型是以东尼·霍尔的通信顺序进程（CSP）为基础，采取类似模型的其他语言包括Occam和Limbo，但它也具有Pi运算的特征，比如通道传输。 Google Golang存在安全漏洞，该漏洞源于未限制GNU tar pax稀疏文件中稀疏区域数据块的最大数量，可能导致恶意构造的归档文件引发内存无限分配。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1001 · Data Obfuscation
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I. Basic Information for CVE-2025-58183

Vulnerability Information
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Vulnerability Title
Unbounded allocation when parsing GNU sparse map in archive/tar
Source: CVE Program / CVE List V5
Vulnerability Description
tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions can cause a Reader to read an unbounded amount of data from the archive into memory. When reading from a compressed source, a small compressed input can result in large allocations.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Google Golang 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Golang是美国谷歌（Google）公司的一种静态强类型、编译型语言。Go的语法接近C语言，但对于变量的声明有所不同。Go支持垃圾回收功能。Go的并行模型是以东尼·霍尔的通信顺序进程（CSP）为基础，采取类似模型的其他语言包括Occam和Limbo，但它也具有Pi运算的特征，比如通道传输。 Google Golang存在安全漏洞，该漏洞源于未限制GNU tar pax稀疏文件中稀疏区域数据块的最大数量，可能导致恶意构造的归档文件引发内存无限分配。
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
Go standard library archive/tar 0 ~ 1.24.8 -

II. Public POCs for CVE-2025-58183

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III. Intelligence Information for CVE-2025-58183

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Vendor Advisories for CVE-2025-58183 (1)

Same Patch Batch · Go standard library · 2025-10-29 · 10 CVEs total

CVE-2025-58187 Quadratic complexity when checking name constraints in crypto/x509
CVE-2025-58186 Lack of limit when parsing cookies can cause memory exhaustion in net/http
CVE-2025-58188 Panic when validating certificates with DSA public keys in crypto/x509
CVE-2025-58189 ALPN negotiation error contains attacker controlled information in crypto/tls
CVE-2025-58185 Parsing DER payload can cause memory exhaustion in encoding/asn1
CVE-2025-47912 Insufficient validation of bracketed IPv6 hostnames in net/url
CVE-2025-61725 Excessive CPU consumption in ParseAddress in net/mail
CVE-2025-61724 Excessive CPU consumption in Reader.ReadResponse in net/textproto
CVE-2025-61723 Quadratic complexity when parsing some invalid inputs in encoding/pem

IV. Related Vulnerabilities

Same product: archive/tar
Same vendor: Go standard library

V. Comments for CVE-2025-58183

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