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Published: 19/02/2021 Updated: 28/07/2023

CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9

CVSS v3 Base Score: 6.7 | Impact Score: 5.9 | Exploitability Score: 0.8

VMScore: 641

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

A NULL pointer dereference flaw in Linux kernel versions before 5.11 may be seen if sco_sock_getsockopt function in net/bluetooth/sco.c do not have a sanity check for a socket connection, when using BT_SNDMTU/BT_RCVMTU for SCO sockets. This could allow a local attacker with a special user privilege to crash the system (DOS) or leak kernel internal information.

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linux linux kernel

A security issue was found in the Linux kernel before version 5104 A NULL pointer dereference flaw may be seen as the sco_sock_getsockopt function in net/bluetooth/scoc does not have a sanity check for a socket connection when using BT_SNDMTU/BT_RCVMTU for SCO sockets This could allow a local attacker with special user privileges to crash the ...

CWE-476 https://bugzilla.redhat.com/show_bug.cgi?id=1910048 https://nvd.nist.gov https://security.archlinux.org/CVE-2020-35499

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CVE-2020-35499

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