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CVE-2017-12193

Date: November 22, 2017

The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.

Language: C

Severity Score

Related Resources (13)

https://usn.ubuntu.com/3698-1/
https://nvd.nist.gov/vuln/detail/CVE-2017-12193
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b
https://usn.ubuntu.com/3698-2/
https://access.redhat.com/security/cve/CVE-2017-12193
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
http://www.securityfocus.com/bid/101678
https://security-tracker.debian.org/tracker/CVE-2017-12193
https://bugzilla.redhat.com/show_bug.cgi?id=1501215
https://github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2b
https://access.redhat.com/errata/RHSA-2018:0151
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-12193
https://www.mend.io/vulnerability-database/CVE-2017-12193

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): COMPLETE
Additional information:

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