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CVE-2026-48863— Libsolv: stack-based buffer overflow in libsolv eddsa pgp signature verification allows denial of service

CVSS 7.5 · High EPSS 0.81% · P53

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-48863

Vulnerability Information
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Vulnerability Title
Libsolv: stack-based buffer overflow in libsolv eddsa pgp signature verification allows denial of service
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in libsolv. A stack-based buffer overflow vulnerability exists in the PGP verification component due to incorrect length handling when copying EdDSA 's' MPI into a stack buffer. A remote attacker could craft a malicious Ed25519 PGP signature with mismatched MPI lengths. Processing this crafted signature could lead to a denial of service in automated package or repository processing workflows.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
openSUSE libsolv 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
openSUSE libsolv是openSUSE社区开源的一个检查软件包依赖的库。 openSUSE libsolv 0.7.38之前版本存在缓冲区错误漏洞，该漏洞源于PGP验证组件中复制EdDSA 's' MPI到堆栈缓冲区时长度处理不正确，存在栈缓冲区溢出漏洞，远程攻击者可制作恶意Ed25519 PGP签名，通过处理特制签名导致自动包或仓库处理工作流中的拒绝服务。
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

VendorProductAffected VersionsCPESubscribe
OpenSUSElibsolv 0.6.4 ~ 0.7.38 -
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9
Red HatRed Hat Hardened Images-cpe:/a:redhat:hummingbird:1
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4
Red HatRed Hat Satellite 6-cpe:/a:redhat:satellite:6
Red HatRed Hat Update Infrastructure 4 for Cloud Providers-cpe:/a:redhat:rhui:4::el8

II. Public POCs for CVE-2026-48863

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 9404 chars
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III. Intelligence Information for CVE-2026-48863

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Patches & Fixes for CVE-2026-48863 (1)

Vendor Advisories for CVE-2026-48863 (2)

IV. Related Vulnerabilities

Same vendor: OpenSUSE
Same weakness: CWE-121

V. Comments for CVE-2026-48863

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