Linux Kernel up to 5.1.8 arch/x86/lib/insn-eval.c modify_ldt race condition

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 5.1.8. This vulnerability affects the function modify_ldt in the library arch/x86/lib/insn-eval.c. Executing a manipulation can lead to race condition. This vulnerability appears as CVE-2019-13233. The attack requires local access. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.1.8 (Operating System). It has been declared as critical. This vulnerability affects the function modify_ldt in the library arch/x86/lib/insn-eval.c. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In arch/x86/lib/insn-eval.c in the Linux kernel before 5.1.9, there is a use-after-free for access to an LDT entry because of a race condition between modify_ldt() and a #BR exception for an MPX bounds violation.

The weakness was presented 07/04/2019. This vulnerability was named CVE-2019-13233 since 07/04/2019. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 247371 (Linux Distros Unpatched Vulnerability : CVE-2019-13233), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.1.9 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (247371). 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: 6.1
VulDB Meta Temp Score: 6.0

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

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
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: 247371
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2019-13233

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.1.9
Patch: git.kernel.org

Timelineinfo

07/04/2019 🔍
07/04/2019 +0 days 🔍
07/05/2019 +1 days 🔍
08/11/2025 +2228 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2019:3309
Status: Confirmed

CVE: CVE-2019-13233 (🔍)
GCVE (CVE): GCVE-0-2019-13233
GCVE (VulDB): GCVE-100-137338

Entryinfo

Created: 07/05/2019 06:59
Updated: 08/11/2025 00:32
Changes: 07/05/2019 06:59 (39), 07/01/2020 10:23 (18), 10/17/2023 11:59 (6), 08/11/2025 00:32 (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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