Vulnerability in udf: NULL pointer dereference in udf_symlink function
Summary
UVI-2021-1001391: udf: Fix NULL pointer dereference in udf_symlink function. Affects Kernel versions < 3638705ecd5ad2785e996f820121c0ad15ce64b5. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The udf package is a component of the Linux Kernel, which is responsible for supporting the Universal Disk Format (UDF) file system. UDF is commonly used for optical media such as DVDs and Blu-ray discs. The udf_symlink function in the udf package is used to create symbolic links within the UDF file system.
Vulnerability Detail
The udf_symlink function in the udf package is vulnerable to a NULL pointer dereference. This vulnerability could be exploited by an attacker to cause a denial of service (DoS) condition or potentially execute arbitrary code. The vulnerability occurs when the function is called with a NULL inode pointer, leading to a crash or other unexpected behavior.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no known workaround for this vulnerability. It is recommended to apply the fix provided in the latest Linux Kernel version.
Conclusion
The vulnerability in the udf package's udf_symlink function could lead to a denial of service (DoS) condition or potential execution of arbitrary code. It is crucial to update the Linux Kernel to the latest version that includes the fix to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability could lead to a denial of service (DoS) condition or potential execution of arbitrary code.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for vulnerabilities in real-time.
There are no known exploits for this vulnerability at the time of this report.
No, the recommended mitigation is to update the Linux Kernel to the latest version that includes the fix.
You can find more information about the fix in the Linux Kernel commit 3638705ecd5ad2785e996f820121c0ad15ce64b5. For additional details about the vulnerability, refer to the source link provided in the database_specific section of this report.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
