4.9
MEDIUM
CVE-2014-7843
Linux kernel ARM64 __clear_user Denial of Service
Description

The __clear_user function in arch/arm64/lib/clear_user.S in the Linux kernel before 3.17.4 on the ARM64 platform allows local users to cause a denial of service (system crash) by reading one byte beyond a /dev/zero page boundary.

INFO

Published Date :

Nov. 30, 2014, 1:59 a.m.

Last Modified :

Feb. 13, 2023, 12:42 a.m.

Remotely Exploitable :

No

Impact Score :

6.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2014-7843 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2014-7843 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2014-7843 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 13, 2023

    Action Type Old Value New Value
    Removed Reference http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=97fc15436b36ee3956efad83e22a557991f7d19d [Vendor Advisory]
    Added Reference http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=97fc15436b36ee3956efad83e22a557991f7d19d [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 22, 2015

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/71082
    Added Reference http://secunia.com/advisories/62305
  • Initial Analysis by [email protected]

    Dec. 01, 2014

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:3.17.3:*:*:*:*:*:arm64:* (and previous)
    Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:C)
    Changed Reference Type http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=97fc15436b36ee3956efad83e22a557991f7d19d No Types Assigned http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=97fc15436b36ee3956efad83e22a557991f7d19d Advisory
    Changed Reference Type https://github.com/torvalds/linux/commit/97fc15436b36ee3956efad83e22a557991f7d19d No Types Assigned https://github.com/torvalds/linux/commit/97fc15436b36ee3956efad83e22a557991f7d19d Advisory, Patch
    Changed Reference Type http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4 No Types Assigned http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4 Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1163744 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1163744 Advisory, Patch
    Added CWE CWE-17
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2014-7843 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2014-7843 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05635

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability