Linux · Linux Kernel · CVE-2021-47353
**Name of the Vulnerable Software and Affected Versions**
Linux kernel (affected versions not specified)
**Description**
A NULL pointer dereference issue has been identified in the Linux kernel, specifically in the `udf symlink` function. The `epos.bh` variable is assigned a value returned by `udf tgetblk`, which can be NULL. Without proper validation, this leads to a potential NULL pointer dereference when `sb getblk` fails. The issue is resolved by adding a check to validate the value of `epos.bh`.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.