Vulnerability identifier: #VU96358

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: CVE-2022-48887

CWE-ID: CWE-667

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 locking within the vmw_execbuf_rcache_update(), vmw_execbuf_res_noref_val_add(), vmw_view_res_val_add(), vmw_resource_context_res_add(), vmw_cmd_res_check(), vmw_translate_mob_ptr(), vmw_translate_guest_ptr(), vmw_cmd_set_shader(), vmw_cmd_dx_set_shader(), vmw_cmd_dx_bind_shader(), vmw_cmd_dx_bind_streamoutput(), vmw_cmd_dx_set_streamoutput() and vmw_execbuf_tie_context() functions in drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c, within the vmw_user_bo_lookup() function in drivers/gpu/drm/vmwgfx/vmwgfx_bo.c, within the ttm_base_object_unref() and ttm_base_object_lookup() functions in drivers/gpu/drm/vmwgfx/ttm_object.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/7ac9578e45b20e3f3c0c8eb71f5417a499a7226a
http://git.kernel.org/stable/c/a309c7194e8a2f8bd4539b9449917913f6c2cd50

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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.