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Medium · 4.8 CVE-2025-0577 EUVD-2025-207796GHSA-7qhw-4fcq-2g37

Glibc: vdso getrandom acceleration may return predictable randomness

Published Feb 18, 2026 · Updated Feb 25, 2026 · Assigned by fedora

Description

An insufficient entropy vulnerability was found in glibc. The getrandom and arc4random family of functions may return predictable randomness if these functions are called again after the fork, which happens concurrently with a call to any of these functions.

Affected products

VendorProductAffectedFixed
— glibc 2.39-28.fc40 – ≤ 2.39-33.fc40, 2.40-12.fc41 – ≤ 2.40-17.fc41 —
Red Hat Red Hat Enterprise Linux 10 — —
Red Hat Red Hat Enterprise Linux 6 — —
Red Hat Red Hat Enterprise Linux 7 — —
Red Hat Red Hat Enterprise Linux 8 — —
Red Hat Red Hat Enterprise Linux 9 — —

References