Linux Kernel up to 6.5.9 io_uring/fdinfo.c io_uring_show_fdinfo null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.5.9 and classified as problematic. This impacts the function io_uring_show_fdinfo of the file io_uring/fdinfo.c. Performing a manipulation results in null pointer dereference. This vulnerability was named CVE-2023-46862. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 6.5.9 (Operating System). This affects the function io_uring_show_fdinfo of the file io_uring/fdinfo.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

An issue was discovered in the Linux kernel through 6.5.9. During a race with SQ thread exit, an io_uring/fdinfo.c io_uring_show_fdinfo NULL pointer dereference can occur.

The weakness was presented 10/29/2023 as 7644b1a1c9a7ae8ab99175989bfc8676055edb46. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-46862 since 10/29/2023. Technical details are known, but no exploit is available.

Applying the patch 7644b1a1c9a7ae8ab99175989bfc8676055edb46 is able to eliminate this problem. The bugfix is ready for download at github.com.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

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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: 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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 7644b1a1c9a7ae8ab99175989bfc8676055edb46

Timelineinfo

10/29/2023 🔍
10/29/2023 +0 days 🔍
10/29/2023 +0 days 🔍
11/19/2023 +21 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 7644b1a1c9a7ae8ab99175989bfc8676055edb46
Status: Confirmed

CVE: CVE-2023-46862 (🔍)
GCVE (CVE): GCVE-0-2023-46862
GCVE (VulDB): GCVE-100-243813

Entryinfo

Created: 10/29/2023 07:30
Updated: 11/19/2023 16:50
Changes: 10/29/2023 07:30 (44), 11/19/2023 16:50 (11)
Complete: 🔍
Cache ID: 216::103

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