CVE-2025-8860 Affecting perl-hivex package, versions <0:1.3.18-23.module+el8.10.0+90872+a1d63504


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.01% (1st percentile)

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  • Snyk IDSNYK-ORACLE8-PERLHIVEX-16309062
  • published27 Apr 2026
  • disclosed18 Feb 2026

Introduced: 18 Feb 2026

CVE-2025-8860  (opens in a new tab)

How to fix?

Upgrade Oracle:8 perl-hivex to version 0:1.3.18-23.module+el8.10.0+90872+a1d63504 or higher.
This issue was patched in ELSA-2026-50239.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perl-hivex package and not the perl-hivex package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

A flaw was found in QEMU in the uefi-vars virtual device. When the guest writes to register UEFI_VARS_REG_BUFFER_SIZE, the .write callback uefi_vars_write is invoked. The function allocates a heap buffer without zeroing the memory, leaving the buffer filled with residual data from prior allocations. When the guest later reads from register UEFI_VARS_REG_PIO_BUFFER_TRANSFER, the .read callback uefi_vars_read returns leftover metadata or other sensitive process memory from the previously allocated buffer, leading to an information disclosure vulnerability.

CVSS Base Scores

version 3.1