#VU90380 NULL pointer dereference in Linux kernel
Vulnerability identifier: #VU90380
Vulnerability 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:
CWE-ID:
CWE-476
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 NULL pointer dereference within the svdm_consume_identity(), tcpm_register_partner_altmodes(), tcpm_init_vconn(), tcpm_typec_connect(), tcpm_typec_disconnect() and tcpm_pwr_opmode_to_rp() functions in drivers/usb/typec/tcpm/tcpm.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
External links
http://git.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57
http://git.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637
http://git.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77
http://git.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249dd
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.
