Improper locking in Linux kernel pci driver

1) Improper locking

EUVDB-ID: #VU90809

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-26605

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the pcie_aspm_exit_link_state() and pcie_aspm_pm_state_change() functions in drivers/pci/pcie/aspm.c, within the pci_power_up(), pci_set_full_power_state(), pci_bus_set_current_state(), pci_set_low_power_state() and pci_set_power_state() functions in drivers/pci/pci.c, within the qcom_pcie_enable_aspm() function in drivers/pci/controller/dwc/pcie-qcom.c, within the pci_bus_add_devices() and pci_walk_bus() functions in drivers/pci/bus.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/ef90508574d7af48420bdc5f7b9a4f1cdd26bc70
http://git.kernel.org/stable/c/1e560864159d002b453da42bd2c13a1805515a20
http://git.kernel.org/stable/c/0f7908a016c092cfdaa16d785fa5099d867bc1a3
http://git.kernel.org/stable/c/b0f4478838be1f1d330061201898fef65bf8fd7c

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.