Linux Kernel up to 6.6.13/6.7.1 RSA mpi_alloc null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.6.13/6.7.1. Affected by this vulnerability is the function mpi_alloc of the component RSA Handler. Executing a manipulation can lead to null pointer dereference. This vulnerability is handled as CVE-2023-52472. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.13/6.7.1 (Operating System). It has been declared as critical. This vulnerability affects the function mpi_alloc of the component RSA Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: crypto: rsa - add a check for allocation failure Static checkers insist that the mpi_alloc() allocation can fail so add a check to prevent a NULL dereference. Small allocations like this can't actually fail in current kernels, but adding a check is very simple and makes the static checkers happy.

The weakness was released 02/25/2024. The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2023-52472 since 02/20/2024. There are known technical details, but no exploit is available.

Upgrading to version 6.6.14, 6.7.2 or 6.8-rc1 eliminates this vulnerability. Applying the patch 2831f4d3bfa6/95ad8b6879e2/d872ca165cb6 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: No
Local: No
Remote: Partially

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.6.14/6.7.2/6.8-rc1
Patch: 2831f4d3bfa6/95ad8b6879e2/d872ca165cb6

Timelineinfo

02/20/2024 🔍
02/25/2024 +5 days 🔍
02/25/2024 +0 days 🔍
02/25/2024 +0 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-52472 (🔍)
GCVE (CVE): GCVE-0-2023-52472
GCVE (VulDB): GCVE-100-254716

Entryinfo

Created: 02/25/2024 10:24
Changes: 02/25/2024 10:24 (44)
Complete: 🔍
Cache ID: 216::103

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