#VU98882 Use-after-free in Linux kernel - CVE-2024-49991
Vulnerability identifier: #VU98882
Vulnerability risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID:
CWE-ID:
CWE-416
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 escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the pqm_clean_queue_resource() function in drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c, within the kfd_process_destroy_pdds() function in drivers/gpu/drm/amd/amdkfd/kfd_process.c, within the kfd_free_mqd_cp() function in drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c, within the deallocate_hiq_sdma_mqd() function in drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c, within the kfd_gtt_sa_fini() and kgd2kfd_device_exit() functions in drivers/gpu/drm/amd/amdkfd/kfd_device.c, within the kfd_ioctl_create_queue() function in drivers/gpu/drm/amd/amdkfd/kfd_chardev.c, within the amdgpu_amdkfd_free_gtt_mem() function in drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c. A local user can escalate privileges on the system.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: All versions
External links
https://git.kernel.org/stable/c/30ceb873cc2e97348d9da2265b2d1ddf07f682e1
https://git.kernel.org/stable/c/71f3240f82987f0f070ea5bed559033de7d4c0e1
https://git.kernel.org/stable/c/6c9289806591807e4e3be9a23df8ee2069180055
https://git.kernel.org/stable/c/c86ad39140bbcb9dc75a10046c2221f657e8083b
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.
