CVE-2024-50107

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

platform/x86/intel/pmc: Fix pmc_core_iounmap to call iounmap for valid addresses

Commit 50c6dbdfd16e ("x86/ioremap: Improve iounmap() address range checks")

introduces a WARN when adrress ranges of iounmap are invalid. On Thinkpad

P1 Gen 7 (Meteor Lake-P) this caused the following warning to appear:

WARNING: CPU: 7 PID: 713 at arch/x86/mm/ioremap.c:461 iounmap+0x58/0x1f0

Modules linked in: rfkill(+) snd_timer(+) fjes(+) snd soundcore intel_pmc_core(+)

int3403_thermal(+) int340x_thermal_zone intel_vsec pmt_telemetry acpi_pad pmt_class

acpi_tad int3400_thermal acpi_thermal_rel joydev loop nfnetlink zram xe drm_suballoc_helper

nouveau i915 mxm_wmi drm_ttm_helper gpu_sched drm_gpuvm drm_exec drm_buddy i2c_algo_bit

crct10dif_pclmul crc32_pclmul ttm crc32c_intel polyval_clmulni rtsx_pci_sdmmc ucsi_acpi

polyval_generic mmc_core hid_multitouch drm_display_helper ghash_clmulni_intel typec_ucsi

nvme sha512_ssse3 video sha256_

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

References