Linux Kernel up to 5.17.5 Concurrency drivers/block/floppy.c raw_cmd_ioctl use after free
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.2 | $0-$5k | 0.00 |
A vulnerability classified as critical has been found in Linux Kernel up to 5.17.5 (Operating System). Affected is the function raw_cmd_ioctl
of the file drivers/block/floppy.c of the component Concurrency Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on availability. CVE summarizes:
drivers/block/floppy.c in the Linux kernel before 5.17.6 is vulnerable to a denial of service, because of a concurrency use-after-free flaw after deallocating raw_cmd in the raw_cmd_ioctl function.
The weakness was shared 06/18/2022 as 233087ca063686964a53c829d547c7571e3f67bf. The advisory is available at github.com. This vulnerability is traded as CVE-2022-33981 since 06/18/2022. Technical details are known, but there is no available exploit.
Upgrading to version 5.17.6 eliminates this vulnerability. Applying the patch 233087ca063686964a53c829d547c7571e3f67bf 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.
The vulnerability is also documented in the vulnerability database at X-Force (225362).
Product
Type
Vendor
Name
Version
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: 6.5VulDB Meta Temp Score: 6.2
VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Use after freeCWE: CWE-416 / CWE-119
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: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Kernel 5.17.6
Patch: 233087ca063686964a53c829d547c7571e3f67bf
Timeline
06/18/2022 🔍06/18/2022 🔍
06/18/2022 🔍
06/19/2022 🔍
Sources
Vendor: kernel.orgAdvisory: 233087ca063686964a53c829d547c7571e3f67bf
Status: Confirmed
CVE: CVE-2022-33981 (🔍)
X-Force: 225362
Entry
Created: 06/19/2022 00:02Changes: 06/19/2022 00:02 (47)
Complete: 🔍
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