Linux Kernel up to 5.18.3 virtio_rpmsg_bus.c rpmsg_probe 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 identified as critical has been detected in Linux Kernel up to 5.18.3. Impacted is the function rpmsg_probe of the file drivers/rpmsg/virtio_rpmsg_bus.c. The manipulation leads to double free. This vulnerability is uniquely identified as CVE-2022-34495. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.18.3 (Operating System) and classified as critical. This issue affects the function rpmsg_probe of the file drivers/rpmsg/virtio_rpmsg_bus.c. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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

The weakness was disclosed 06/26/2022 as c2eecefec5df1306eafce28ccdf1ca159a552ecc. The advisory is shared at github.com. The identification of this vulnerability is CVE-2022-34495 since 06/26/2022. Technical details are known, 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 c2eecefec5df1306eafce28ccdf1ca159a552ecc 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

Type

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: c2eecefec5df1306eafce28ccdf1ca159a552ecc

Timelineinfo

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

Sourcesinfo

Vendor: kernel.org

Advisory: c2eecefec5df1306eafce28ccdf1ca159a552ecc
Status: Confirmed

CVE: CVE-2022-34495 (🔍)
GCVE (CVE): GCVE-0-2022-34495
GCVE (VulDB): GCVE-100-202757

Entryinfo

Created: 06/26/2022 22:12
Updated: 07/15/2022 09:56
Changes: 06/26/2022 22:12 (46), 07/15/2022 09:56 (18)
Complete: 🔍
Cache ID: 216::103

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