CVE-2025-8860
- ULN >
- Oracle Linux CVE repository >
- CVE-2025-8860
CVE Details
| Release Date: | 2026-02-18 | |
| Impact: | Low | What is this? |
Description
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.
See more information about CVE-2025-8860 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 3.3 |
| Vector String: | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| Version: | 3.1 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | Low |
| Integrity Impact: | None |
| Availability Impact: | None |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 8 (hivex) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libguestfs) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libguestfs-winsupport) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libiscsi) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libnbd) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libtpms) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libvirt) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libvirt-dbus) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (libvirt-python) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (nbdkit) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (netcf) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (perl-Sys-Virt) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (qemu-kvm) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (seabios) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (sgabios) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (supermin) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (swtpm) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 8 (virt-v2v) | ELSA-2026-50239 | 2026-04-24 |
| Oracle Linux version 9 (qemu-kvm) | ELSA-2026-50241 | 2026-04-24 |
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections:
- Oracle customers - enter a support request
- Vulnerability scanning tools vendors and project maintainers - follow the standard ISV process
