Linux Kernel VDUSE Kernel Driver vduse_vdpa_get_config uninitialized variable
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.3 | $5k-$25k | 0.00 |
A vulnerability has been found in Linux Kernel (Operating System) (affected version unknown) and classified as critical. Affected by this vulnerability is the function vduse_vdpa_get_config
of the component VDUSE Kernel Driver. The manipulation with an unknown input leads to a uninitialized variable vulnerability. The CWE definition for the vulnerability is CWE-457. The code uses a variable that has not been initialized, leading to unpredictable or unintended results. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
A flaw was found in vDPA with VDUSE backend. There are currently no checks in VDUSE kernel driver to ensure the size of the device config space is in line with the features advertised by the VDUSE userspace application. In case of a mismatch, Virtio drivers config read helpers do not initialize the memory indirectly passed to vduse_vdpa_get_config() returning uninitialized memory from the stack. This could cause undefined behavior or data leaks in Virtio drivers.
The weakness was presented 09/02/2022 as 2103900. The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2022-2308 since 07/05/2022. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/11/2022).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.4VulDB Meta Temp Score: 6.3
VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.5
NVD Vector: 🔍
CVSSv2
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Uninitialized variableCWE: CWE-457 / CWE-453
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
07/05/2022 🔍09/02/2022 🔍
09/02/2022 🔍
10/11/2022 🔍
Sources
Vendor: kernel.orgAdvisory: 2103900
Status: Not defined
CVE: CVE-2022-2308 (🔍)
Entry
Created: 09/02/2022 08:54Updated: 10/11/2022 09:39
Changes: 09/02/2022 08:54 (39), 10/11/2022 09:39 (11)
Complete: 🔍
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