7.5

CVE-2026-48863

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

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.
Daten sind bereitgestellt durch das CVE Programm von Authorized Data Publishers (ADP) (Unstrukturiert)
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 10
Default Statusunaffected
HerstellerRed Hat
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Produkt Red Hat Enterprise Linux 7
Default Statusunaffected
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Produkt Red Hat Enterprise Linux 8
Default Statusunaffected
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Produkt Red Hat Enterprise Linux 9
Default Statusunaffected
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Produkt Red Hat Hardened Images
Default Statusunaffected
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Produkt Red Hat OpenShift Container Platform 4
Default Statusunaffected
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Produkt Red Hat Satellite 6
Default Statusunaffected
HerstellerRed Hat
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Produkt Red Hat Update Infrastructure 4 for Cloud Providers
Default Statusunaffected
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.47% 0.38
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-121 Stack-based Buffer Overflow

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

https://access.redhat.com/security/cve/CVE-2026-48863
https://bugzilla.redhat.com/show_bug.cgi?id=2460975
https://github.com/openSUSE/libsolv/commit/44f8c085045b1f771641091bbb2b810d12cff9e8#diff-309f245ec9b669ec78b8159c39e6f50130b4d4a0448f742685f7833d04bc4caaR592
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48863.json