Linux Kernel up to 4.12 fs/f2fs/extent_cache.c Application memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.12. Affected by this vulnerability is an unknown functionality of the file fs/f2fs/extent_cache.c of the component Linux Kernel. Such manipulation as part of Application leads to memory corruption. This vulnerability is documented as CVE-2017-18193. The attack needs to be performed locally. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.12 (Operating System). It has been rated as problematic. Affected by this issue is some unknown functionality of the file fs/f2fs/extent_cache.c of the component Linux Kernel. The manipulation as part of a Application leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

fs/f2fs/extent_cache.c in the Linux kernel before 4.13 mishandles extent trees, which allows local users to cause a denial of service (BUG) via an application with multiple threads.

The bug was discovered 02/22/2018. The weakness was released 02/22/2018 (Website). The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2017-18193 since 02/22/2018. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 109518 (Debian DSA-4188-1 : linux - security update (Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351263 (Amazon Linux Security Advisory for kernel: ALAC2012-2018-002).

Upgrading to version 4.13 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (109518), SecurityFocus (BID 103147†) and CERT Bund (WID-SEC-2022-0532). Entries connected to this vulnerability are available at VDB-104315, VDB-110784, VDB-111185 and VDB-112680. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Oracle Linux
  • Debian Linux
  • Open Source Linux Kernel
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle VM
  • NetApp FAS
  • Avaya Aura Communication Manager
  • Avaya Aura Session Manager
  • Avaya Aura Application Enablement Services
  • Avaya Aura System Manager
  • Avaya Aura Experience Portal
  • NetApp AFF

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: 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: 109518
Nessus Name: Debian DSA-4188-1 : linux - security update (Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 54612
OpenVAS Name: Debian Security Advisory DSA 4188-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Kernel 4.13
Patch: git.kernel.org

Timelineinfo

02/22/2018 🔍
02/22/2018 +0 days 🔍
02/22/2018 +0 days 🔍
02/22/2018 +0 days 🔍
02/23/2018 +1 days 🔍
02/26/2018 +3 days 🔍
05/01/2018 +64 days 🔍
05/02/2018 +1 days 🔍
09/14/2025 +2692 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: dad48e73127ba10279ea33e6dbc8d3905c4d31c0
Status: Confirmed

CVE: CVE-2017-18193 (🔍)
GCVE (CVE): GCVE-0-2017-18193
GCVE (VulDB): GCVE-100-113696

OVAL: 🔍

SecurityFocus: 103147 - Linux Kernel 'fs/f2fs/extent_cache.c' Local Denial of Service Vulnerability
CERT Bund: WID-SEC-2022-0532 - Linux Kernel: Mehrere Schwachstellen

See also: 🔍

Entryinfo

Created: 02/23/2018 07:47
Updated: 09/14/2025 02:02
Changes: 02/23/2018 07:47 (79), 01/07/2020 19:31 (4), 02/08/2023 17:05 (5), 02/08/2023 17:13 (1), 09/14/2025 02:02 (24)
Complete: 🔍
Cache ID: 216:333:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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