Linux Kernel l2cap_core.c l2cap_parse_conf_req uninitialized pointer

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.3$0-$5k0.00

A vulnerability was found in Linux Kernel (Operating System) (affected version not known). It has been rated as problematic. Affected by this issue is the function l2cap_parse_conf_req of the file net/bluetooth/l2cap_core.c. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. Using CWE to declare the problem leads to CWE-824. The program accesses or uses a pointer that has not been initialized. Impacted is confidentiality. CVE summarizes:

There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_parse_conf_req function which can be used to leak kernel pointers remotely. We recommend upgrading past commit https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e https://www.google.com/url

The weakness was disclosed 11/23/2022 as b1a2cd50c0357f243b7435a732b4e62ba3157a2e. The advisory is available at github.com. This vulnerability is handled as CVE-2022-42895 since 10/12/2022. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/23/2022).

Applying the patch b1a2cd50c0357f243b7435a732b4e62ba3157a2e is able to eliminate this problem. The bugfix is ready for download at github.com.

Productinfo

Type

Vendor

Name

License

  • open-source

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.1
CNA Vector (Google Inc.): 🔒

CVSSv2info

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

Exploitinginfo

Class: Uninitialized pointer
CWE: CWE-824 / CWE-908
ATT&CK: Unknown

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: b1a2cd50c0357f243b7435a732b4e62ba3157a2e

Timelineinfo

10/12/2022 CVE reserved
11/23/2022 +42 days Advisory disclosed
11/23/2022 +0 days VulDB entry created
11/23/2022 +0 days VulDB last update

Sourcesinfo

Vendor: kernel.org

Advisory: b1a2cd50c0357f243b7435a732b4e62ba3157a2e
Status: Confirmed

CVE: CVE-2022-42895 (🔒)

Entryinfo

Created: 11/23/2022 08:30 PM
Changes: 11/23/2022 08:30 PM (52)
Complete: 🔍

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