Linux Kernel up to 5.19.12 PCMCIA Device synclink_cs.c mgslpc_ioctl use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 5.19.12. This affects the function mgslpc_ioctl of the file drivers/char/pcmcia/synclink_cs.c of the component PCMCIA Device Handler. Such manipulation leads to use after free. This vulnerability is traded as CVE-2022-41848. The attack can be executed directly on the physical device. There is no exploit available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.19.12 (Operating System). It has been rated as critical. Affected by this issue is the function mgslpc_ioctl of the file drivers/char/pcmcia/synclink_cs.c of the component PCMCIA Device Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

drivers/char/pcmcia/synclink_cs.c in the Linux kernel through 5.19.12 has a race condition and resultant use-after-free if a physically proximate attacker removes a PCMCIA device while calling ioctl, aka a race condition between mgslpc_ioctl and mgslpc_detach.

The weakness was shared 09/30/2022. The advisory is available at lore.kernel.org. This vulnerability is handled as CVE-2022-41848 since 09/30/2022. Technical details are known, but there is no available exploit.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

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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: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 6.6
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.2
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

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: git.kernel.org

Timelineinfo

09/30/2022 🔍
09/30/2022 +0 days 🔍
09/30/2022 +0 days 🔍
10/29/2022 +29 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: lore.kernel.org
Status: Confirmed

CVE: CVE-2022-41848 (🔍)
GCVE (CVE): GCVE-0-2022-41848
GCVE (VulDB): GCVE-100-210014

Entryinfo

Created: 09/30/2022 13:44
Updated: 10/29/2022 08:25
Changes: 09/30/2022 13:44 (43), 10/29/2022 08:25 (11)
Complete: 🔍
Cache ID: 216::103

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