Linux Kernel io_files_update_with_index_alloc null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

A vulnerability was found in Linux Kernel (Operating System) (unknown version). It has been rated as critical. Affected by this issue is the function io_files_update_with_index_alloc. The manipulation 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 availability. CVE summarizes:

A NULL pointer dereference issue was discovered in the Linux kernel in io_files_update_with_index_alloc. A local user could use this flaw to potentially crash the system causing a denial of service.

The weakness was presented 11/29/2022 as d785a773bed966a75ca1f11d108ae1897189975b. The advisory is available at github.com. This vulnerability is handled as CVE-2022-4127 since 11/23/2022. Technical details are known, but there is no available exploit.

Applying the patch d785a773bed966a75ca1f11d108ae1897189975b is able to eliminate this problem. The bugfix is ready for download at github.com.

See VDB-279861, VDB-279862, VDB-279863 and VDB-279864 for similar entries.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
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: 🔍

Local: No
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: d785a773bed966a75ca1f11d108ae1897189975b

Timelineinfo

11/23/2022 🔍
11/29/2022 +6 days 🔍
11/29/2022 +0 days 🔍
12/24/2022 +25 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: d785a773bed966a75ca1f11d108ae1897189975b
Status: Confirmed

CVE: CVE-2022-4127 (🔍)
See also: 🔍

Entryinfo

Created: 11/29/2022 07:35 AM
Updated: 12/24/2022 07:10 AM
Changes: 11/29/2022 07:35 AM (42), 12/24/2022 07:10 AM (11)
Complete: 🔍
Cache ID: 98:F02:40

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