In the Linux kernel, the following vulnerability has been resolved:
bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()
In fsl_mc_bus_remove(), mc->root_mc_bus_dev->mc_io is passed to fsl_destroy_mc_io(). However, mc->root_mc_bus_dev is already freed in fsl_mc_device_remove(). Then reference to mc->root_mc_bus_dev->mc_io triggers KASAN use-after-free. To avoid the use-after-free, keep the reference to mc->root_mc_bus_dev->mc_io in a local variable and pass to fsl_destroy_mc_io().
This patch needs rework to apply to kernels older than v5.15.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linuxUpgrade linux-azure-5.15Upgrade linux-gkeopUpgrade linux-riscv-5.15Upgrade linux-gcpUpgrade linux-ibmUpgrade linux-intel-iotgUpgrade linux-azureUpgrade linux-aws-5.15Upgrade linux-kvmUpgrade linux-lowlatencyUpgrade linux-oracle-5.15Upgrade linux-nvidiaUpgrade linux-azure-fdeUpgrade linux-gcp-5.15Upgrade linux-hwe-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-oracleUpgrade linux-realtimeUpgrade linux-raspiUpgrade linux-awsUpgrade linux-gke | Mar 19, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Feb 9, 2026 | Feb 26, 2025 |
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