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CVE-2021-38208

Date: August 8, 2021

net/nfc/llcp_sock.c in the Linux kernel before 5.12.10 allows local unprivileged users to cause a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call.

Severity Score

Related Resources (11)

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10
https://security-tracker.debian.org/tracker/CVE-2021-38208
https://nvd.nist.gov/vuln/detail/CVE-2021-38208
https://github.com/torvalds/linux/commit/4ac06a1e013cf5fdd963317ffd3b968560f33bba
http://www.openwall.com/lists/oss-security/2021/08/24/2
http://www.openwall.com/lists/oss-security/2021/08/17/2
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-38208
https://access.redhat.com/security/cve/CVE-2021-38208
http://www.openwall.com/lists/oss-security/2021/08/17/1
https://bugzilla.redhat.com/show_bug.cgi?id=1992810
https://www.mend.io/vulnerability-database/CVE-2021-38208

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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