Linux Kernel 6.1.8 do_prlimit rlim null pointer dereference

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

Summaryinfo

A vulnerability was found in Linux Kernel 6.1.8. It has been classified as problematic. The affected element is the function do_prlimit. The manipulation of the argument rlim leads to null pointer dereference. This vulnerability is traded as CVE-2023-0458. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 6.1.8 (Operating System). It has been rated as problematic. This issue affects the function do_prlimit. The manipulation of the argument rlim with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is confidentiality. The summary by CVE is:

A speculative pointer dereference problem exists in the Linux Kernel on the do_prlimit() function. The resource argument value is controlled and is used in pointer arithmetic for the 'rlim' variable and can be used to leak the contents. We recommend upgrading past version 6.1.8 or commit 739790605705ddcf18f21782b9c99ad7d53a8c11

The weakness was shared 04/27/2023 as 739790605705ddcf18f21782b9c99ad7d53a8c11. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-0458 since 01/24/2023. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 739790605705ddcf18f21782b9c99ad7d53a8c11 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2024-1086). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • SUSE Linux
  • IBM QRadar SIEM

Productinfo

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Vendor

Name

Version

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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: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (Google Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 739790605705ddcf18f21782b9c99ad7d53a8c11

Timelineinfo

01/24/2023 🔍
04/26/2023 +92 days 🔍
04/27/2023 +0 days 🔍
10/17/2025 +904 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 739790605705ddcf18f21782b9c99ad7d53a8c11
Status: Confirmed

CVE: CVE-2023-0458 (🔍)
GCVE (CVE): GCVE-0-2023-0458
GCVE (VulDB): GCVE-100-227519
CERT Bund: WID-SEC-2024-1086 - IBM QRadar SIEM: Mehrere Schwachstellen

Entryinfo

Created: 04/27/2023 01:32
Updated: 10/17/2025 07:10
Changes: 04/27/2023 01:32 (34), 04/27/2023 01:33 (20), 05/20/2023 15:07 (11), 10/17/2025 07:10 (22)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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