Linux Kernel 5.0.21 btrfs Filesystem fs/btrfs/async-thread.c btrfs_queue_work use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$5k-$25k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel 5.0.21. This issue affects the function btrfs_queue_work of the file fs/btrfs/async-thread.c of the component btrfs Filesystem Handler. Such manipulation leads to use after free. This vulnerability is documented as CVE-2019-19377. The attack needs to be performed locally. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel 5.0.21 (Operating System). It has been rated as critical. Affected by this issue is the function btrfs_queue_work of the file fs/btrfs/async-thread.c of the component btrfs Filesystem Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image, performing some operations, and unmounting can lead to a use-after-free in btrfs_queue_work in fs/btrfs/async-thread.c.

The weakness was released 11/29/2019. This vulnerability is handled as CVE-2019-19377 since 11/28/2019. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/05/2024).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entry connected to this vulnerability is available at VDB-146547. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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: Use after free
CWE: CWE-416 / 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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/28/2019 🔍
11/29/2019 +1 days 🔍
12/03/2019 +4 days 🔍
03/05/2024 +1554 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-4367-1
Status: Not defined

CVE: CVE-2019-19377 (🔍)
GCVE (CVE): GCVE-0-2019-19377
GCVE (VulDB): GCVE-100-146546
See also: 🔍

Entryinfo

Created: 12/03/2019 16:42
Updated: 03/05/2024 12:20
Changes: 12/03/2019 16:42 (39), 12/03/2019 16:47 (18), 03/05/2024 12:20 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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