Linux Kernel up to 5.18.3 virtio_rpmsg_bus.c rpmsg_virtio_add_ctrl_dev double free

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 5.18.3. This issue affects the function rpmsg_virtio_add_ctrl_dev of the file drivers/rpmsg/virtio_rpmsg_bus.c. Executing a manipulation can lead to double free. This vulnerability is handled as CVE-2022-34494. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.18.3 (Operating System) and classified as critical. This vulnerability affects the function rpmsg_virtio_add_ctrl_dev of the file drivers/rpmsg/virtio_rpmsg_bus.c. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

rpmsg_virtio_add_ctrl_dev in drivers/rpmsg/virtio_rpmsg_bus.c in the Linux kernel before 5.18.4 has a double free.

The weakness was released 06/26/2022 as 1680939e9ecf7764fba8689cfb3429c2fe2bb23c. The advisory is shared for download at github.com. This vulnerability was named CVE-2022-34494 since 06/26/2022. There are known technical details, but no exploit is available.

Upgrading to version 5.18.4 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying the patch 1680939e9ecf7764fba8689cfb3429c2fe2bb23c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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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: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.18.4
Patch: 1680939e9ecf7764fba8689cfb3429c2fe2bb23c

Timelineinfo

06/26/2022 🔍
06/26/2022 +0 days 🔍
06/26/2022 +0 days 🔍
07/15/2022 +19 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 1680939e9ecf7764fba8689cfb3429c2fe2bb23c
Status: Confirmed

CVE: CVE-2022-34494 (🔍)
GCVE (CVE): GCVE-0-2022-34494
GCVE (VulDB): GCVE-100-202756

Entryinfo

Created: 06/26/2022 22:12
Updated: 07/15/2022 09:51
Changes: 06/26/2022 22:12 (46), 07/15/2022 09:51 (18)
Complete: 🔍
Cache ID: 216::103

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