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CVE-2017-12192

Good to know:

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Date: October 11, 2017

The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ operation.

Language: C

Severity Score

Related Resources (13)

https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e961678
https://access.redhat.com/security/cve/CVE-2017-12192
https://people.canonical.com/~ubuntu-security/cve/CVE-2017-12192
https://nvd.nist.gov/vuln/detail/CVE-2017-12192
https://bugzilla.redhat.com/show_bug.cgi?id=1493435
https://lkml.org/lkml/2017/9/18/764
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5
https://security-tracker.debian.org/tracker/CVE-2017-12192
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678
https://usn.ubuntu.com/3583-2/
https://usn.ubuntu.com/3583-1/
https://access.redhat.com/errata/RHSA-2018:0151
https://www.mend.io/vulnerability-database/CVE-2017-12192

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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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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