CVE-2025-0577

Glibc: vdso getrandom acceleration may return predictable randomness

Published Feb 18, 2026 CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

Red Hat Product Security does not have any mitigation recommendations at this time.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title glibc: vDSO getrandom acceleration may return predictable randomness Glibc: vdso getrandom acceleration may return predictable randomness
First Time appeared Redhat
Redhat enterprise Linux
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Type Values Removed Values Added
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.
Title glibc: vDSO getrandom acceleration may return predictable randomness
Weaknesses CWE-331
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

threat_severity

Moderate

Weaknesses

Sources

Status
PUBLISHED
Assigner
fedora
Published
Updated
Feb 25, 2026, 4:54 PM
Reserved
Jan 19, 2025, 1:43 PM
Status
Deferred
Published
Feb 18, 2026, 9:16 PM
Modified
Jun 17, 2026, 8:26 AM
Severity
Moderate
Public date
Jan 23, 2025, 10:40 PM