CVE-2024-26977: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: pci_iounmap(): Fix MMIO mapping leak The #ifdef ARCH_HAS_GENERIC_IOPORT_MAP accidentally also guards iounmap(), which means MMIO mappings are leaked. Move the guard so we call iounmap() for MMIO mappings.

Affected products

• Linux Linux Kernel: from 5.15.1, before 5.15.154 (fixed in 5.15.154); from 5.16, before 6.1.84 (fixed in 6.1.84); from 6.2, before 6.6.24 (fixed in 6.6.24); from 6.7, before 6.7.12 (fixed in 6.7.12); from 6.8, before 6.8.3 (fixed in 6.8.3); version 5.15 only

Published 2024-05-01. Last modified 2026-06-17.