Linux Kernel 5.0.21 btrfs Filesystem fs/btrfs/raid56.c index_rbio_pages out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel 5.0.21. Impacted is the function index_rbio_pages of the file fs/btrfs/raid56.c of the component btrfs Filesystem Handler. Performing a manipulation results in out-of-bounds write. This vulnerability is reported as CVE-2019-19378. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel 5.0.21 (Operating System). This affects the function index_rbio_pages of the file fs/btrfs/raid56.c of the component btrfs Filesystem Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image can lead to slab-out-of-bounds write access in index_rbio_pages in fs/btrfs/raid56.c.

The weakness was disclosed 11/29/2019. This vulnerability is uniquely identified as CVE-2019-19378 since 11/28/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/29/2026).

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

The entry VDB-146546 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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: 7.0
VulDB Meta Temp Score: 7.0

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

NVD Base Score: 7.8
NVD Vector: 🔍

ADP CISA Base Score: 7.8
ADP CISA 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: Out-of-bounds write
CWE: CWE-787 / 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 🔍
05/29/2026 +2369 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: github.com
Status: Not defined

CVE: CVE-2019-19378 (🔍)
GCVE (CVE): GCVE-0-2019-19378
GCVE (VulDB): GCVE-100-146547
See also: 🔍

Entryinfo

Created: 12/03/2019 16:43
Updated: 05/29/2026 07:02
Changes: 12/03/2019 16:43 (39), 12/03/2019 16:48 (18), 03/05/2024 12:27 (3), 05/29/2026 07:02 (26)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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