CVE-2026-99045

high

Description

In the Linux kernel, the following vulnerability has been resolved: ibmveth: h_free logical LAN on open-fail after register ibmveth_open() registers the logical LAN, then allocates the RX buffer pools. A pool failure jumps to out_free_buffer_pools without h_free_logical_lan(), so PHYP still owns the buffer-list page when it is unmapped. request_irq() failure already issued the hypercall before taking the same label. Move that h_free to the shared post-register unwind so both paths deregister before the buffer list is unmapped.

References

https://git.kernel.org/stable/c/eae138e880686ce19879aa0d158fa3c73516f632

https://git.kernel.org/stable/c/decb4d4ead2c71ef698727734ab5024a872eb372

https://git.kernel.org/stable/c/d24fdec1413c656d29298097926e77542785ca0c

https://git.kernel.org/stable/c/c54bbdf6f0731102a4bf7f5e4ee535b3ea415996

https://git.kernel.org/stable/c/af0524bf4ce1a4cbd2946aa81751582951cfcab5

https://git.kernel.org/stable/c/a065bd31ec462f6f9c267026b708dd020f122723

https://git.kernel.org/stable/c/7bd67d324d952101b3431c796d79f5e329bba159

https://git.kernel.org/stable/c/073df7871a7023298ce27cfa518fbc30cc155651

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-108840

Details

Source: Mitre, NVD

Published: 2026-10-23

Updated: 2026-10-30

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.4

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00185