Red Hat Enterprise Linux 7 Linux Kernel memcpy_fromiovecend out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Red Hat Enterprise Linux 7. It has been declared as critical. Affected is the function memcpy_fromiovecend of the component Linux Kernel. Such manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2018-16885. The attack needs to be performed locally. There is not any exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Red Hat Enterprise Linux 7 (Operating System). Affected by this issue is the function memcpy_fromiovecend of the component Linux Kernel. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in the Linux kernel that allows the userspace to call memcpy_fromiovecend() and similar functions with a zero offset and buffer length which causes the read beyond the buffer boundaries, in certain cases causing a memory access fault and a system halt by accessing invalid memory address. This issue only affects kernel version 3.10.x as shipped with Red Hat Enterprise Linux 7.

The bug was discovered 12/22/2018. The weakness was released 01/03/2019 with Red Hat as Bug 1661503 as confirmed bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2018-16885 since 09/11/2018. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 313172 (RHEL 7 : kernel (RHSA-2026:14925)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 21226abb4e9f14d88238964d89b279e461ddc30c is able to eliminate this problem. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (313172) and SecurityFocus (BID 106296†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 313172
Nessus Name: RHEL 7 : kernel (RHSA-2026:14925)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 21226abb4e9f14d88238964d89b279e461ddc30c

Timelineinfo

09/11/2018 🔍
12/21/2018 +101 days 🔍
12/22/2018 +1 days 🔍
12/22/2018 +0 days 🔍
01/03/2019 +12 days 🔍
01/03/2019 +0 days 🔍
01/04/2019 +1 days 🔍
05/08/2026 +2681 days 🔍

Sourcesinfo

Vendor: redhat.com

Advisory: Bug 1661503
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-16885 (🔍)
GCVE (CVE): GCVE-0-2018-16885
GCVE (VulDB): GCVE-100-128666
SecurityFocus: 106296 - Linux Kernel CVE-2018-16885 Local Denial of Service Vulnerability

Entryinfo

Created: 01/04/2019 12:19
Updated: 05/08/2026 21:04
Changes: 01/04/2019 12:19 (65), 04/26/2020 06:52 (5), 05/08/2026 21:04 (19)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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