Linux Kernel up to 5.3.12 fs/ext4/namei.c ext4_empty_dir null pointer dereference
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.4 | $0-$5k | 0.00 |
A vulnerability was found in Linux Kernel up to 5.3.12 (Operating System) and classified as problematic. Affected by this issue is the function ext4_empty_dir
of the file fs/ext4/namei.c. 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. CVE summarizes:
ext4_empty_dir in fs/ext4/namei.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because ext4_read_dirblock(inode,0,DIRENT_HTREE) can be zero.
The weakness was disclosed 11/21/2019. This vulnerability is handled as CVE-2019-19037 since 11/17/2019. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/26/2024).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The entries 146013 and 146011 are pretty similar.
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: 4.4VulDB 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: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Null pointer dereferenceCWE: CWE-476 / CWE-404
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 |
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Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
11/17/2019 🔍11/21/2019 🔍
11/21/2019 🔍
02/26/2024 🔍
Sources
Vendor: kernel.orgAdvisory: DLA 2114-1
Status: Not defined
CVE: CVE-2019-19037 (🔍)
See also: 🔍
Entry
Created: 11/21/2019 08:22Updated: 02/26/2024 07:37
Changes: 11/21/2019 08:22 (38), 11/21/2019 08:27 (18), 02/26/2024 07:37 (4)
Complete: 🔍
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