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CVE-2017-18221

Good to know:

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Date: March 7, 2018

The __munlock_pagevec function in mm/mlock.c in the Linux kernel before 4.11.4 allows local users to cause a denial of service (NR_MLOCK accounting corruption) via crafted use of mlockall and munlockall system calls.

Language: C

Severity Score

Related Resources (11)

https://people.canonical.com/~ubuntu-security/cve/CVE-2017-18221
https://access.redhat.com/security/cve/CVE-2017-18221
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=70feee0e1ef331b22cc51f383d532a0d043fbdcc
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.4
http://www.securityfocus.com/bid/103321
https://usn.ubuntu.com/3655-1/
https://usn.ubuntu.com/3655-2/
https://github.com/torvalds/linux/commit/70feee0e1ef331b22cc51f383d532a0d043fbdcc
https://security-tracker.debian.org/tracker/CVE-2017-18221
https://nvd.nist.gov/vuln/detail/CVE-2017-18221
https://www.mend.io/vulnerability-database/CVE-2017-18221

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

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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