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Vulnerability Details CVE-2021-47353

In the Linux kernel, the following vulnerability has been resolved: udf: Fix NULL pointer dereference in udf_symlink function In function udf_symlink, epos.bh is assigned with the value returned by udf_tgetblk. The function udf_tgetblk is defined in udf/misc.c and returns the value of sb_getblk function that could be NULL. Then, epos.bh is used without any check, causing a possible NULL pointer dereference when sb_getblk fails. This fix adds a check to validate the value of epos.bh.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 0.8%
CVSS Severity
CVSS v3 Score 5.5
References
Products affected by CVE-2021-47353


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