#VU94462 Improper error handling in Linux kernel
Vulnerability identifier: #VU94462
Vulnerability risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-388
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the kfd_smi_event_update_thermal_throttling() function in drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c, within the sdma_v4_4_2_print_iv_entry() function in drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c, within the sdma_v4_0_print_iv_entry() function in drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c, within the gmc_v9_0_process_interrupt() function in drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c, within the gmc_v8_0_process_interrupt() function in drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c, within the gmc_v11_0_process_interrupt() function in drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c, within the gmc_v10_0_process_interrupt() function in drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c, within the amdgpu_vm_ptes_update() function in drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c, within the amdgpu_vm_validate(), amdgpu_vm_wait_idle(), amdgpu_vm_init(), amdgpu_vm_fini() and amdgpu_vm_ioctl() functions in drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c, within the amdgpu_coredump() function in drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c, within the amdgpu_job_timedout() function in drivers/gpu/drm/amd/amdgpu/amdgpu_job.c, within the amdgpu_gem_object_open() function in drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c, within the amdgpu_debugfs_vm_info_show() function in drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c. A local user can perform a denial of service (DoS) attack.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel:
External links
http://git.kernel.org/stable/c/b8f67b9ddf4f8fe6dd536590712b5912ad78f99c
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.
