CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.9 | $0-$5k | 0.00 |
A vulnerability was found in Linux Kernel (Operating System) (the affected version is unknown) and classified as critical. This issue affects the function reserve_sfa_size
of the component openvswitch Module. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:
An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size() function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This flaw allows a local user to crash or potentially escalate their privileges on the system.
The weakness was presented 09/02/2022 as cefa91b2332d7009bc0be5d951d6cbbf349f90f8. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2022-2639 since 08/03/2022. Technical details of the vulnerability are known, but there is no available exploit.
Applying the patch cefa91b2332d7009bc0be5d951d6cbbf349f90f8 is able to eliminate this problem. The bugfix is ready for download at github.com.
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: 7.0VulDB Meta Temp Score: 6.9
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Out-of-bounds writeCWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Patch: cefa91b2332d7009bc0be5d951d6cbbf349f90f8
Timeline
08/03/2022 🔍09/02/2022 🔍
09/02/2022 🔍
10/11/2022 🔍
Sources
Vendor: kernel.orgAdvisory: cefa91b2332d7009bc0be5d951d6cbbf349f90f8
Status: Confirmed
CVE: CVE-2022-2639 (🔍)
Entry
Created: 09/02/2022 09:05Updated: 10/11/2022 10:13
Changes: 09/02/2022 09:05 (43), 10/11/2022 10:13 (11)
Complete: 🔍
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