Linux Kernel 5.0.21 f2fs Filesystem Image fs/f2fs/recovery.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel 5.0.21. Affected by this vulnerability is an unknown functionality of the file fs/f2fs/recovery.c of the component f2fs Filesystem Image Handler. The manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2019-19815. The attack must be carried out locally. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel 5.0.21 (Operating System). This issue affects an unknown functionality of the file fs/f2fs/recovery.c of the component f2fs Filesystem Image Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can cause a NULL pointer dereference in f2fs_recover_fsync_data in fs/f2fs/recovery.c. This is related to F2FS_P_SB in fs/f2fs/f2fs.h.

The weakness was presented 12/17/2019. The identification of this vulnerability is CVE-2019-19815 since 12/16/2019. The attack may be initiated remotely. No form of authentication is needed for a successful 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.

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

See VDB-147324, VDB-147322 and VDB-147321 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 🔍

Patch: github.com

Timelineinfo

12/16/2019 🔍
12/17/2019 +1 days 🔍
12/18/2019 +1 days 🔍
03/12/2024 +1546 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 4969c06a0d83c9c3dc50b8efcdc8eeedfce896f6
Status: Not defined

CVE: CVE-2019-19815 (🔍)
GCVE (CVE): GCVE-0-2019-19815
GCVE (VulDB): GCVE-100-147323
See also: 🔍

Entryinfo

Created: 12/18/2019 08:16
Updated: 03/12/2024 16:14
Changes: 12/18/2019 08:16 (38), 12/18/2019 08:21 (18), 03/12/2024 16:14 (5)
Complete: 🔍
Cache ID: 216::103

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