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.
History

Sat, 18 Jul 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 16 Jul 2026 01:00:00 +0000

Type Values Removed Values Added
Title libsolv: Stack-based buffer overflow in libsolv EdDSA PGP signature verification allows denial of service Libsolv: stack-based buffer overflow in libsolv eddsa pgp signature verification allows denial of service
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Redhat rhui
Redhat satellite
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/a:redhat:rhui:4::el8
cpe:/a:redhat:satellite:6
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Redhat rhui
Redhat satellite
References

Sat, 30 May 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Libsolv
Libsolv libsolv
Vendors & Products Libsolv
Libsolv libsolv

Wed, 27 May 2026 00:15:00 +0000

Type Values Removed Values Added
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.
Title libsolv: Stack-based buffer overflow in libsolv EdDSA PGP signature verification allows denial of service
Weaknesses CWE-121
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-07-18T02:39:45.746Z

Reserved: 2026-05-25T20:59:30.305Z

Link: CVE-2026-48863

cve-icon Vulnrichment

Updated: 2026-07-16T12:04:46.875Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-05-26T18:53:04Z

Links: CVE-2026-48863 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-30T21:22:42Z