In the Linux kernel, the following vulnerability has been resolved:
mISDN: Fix memory leak in dsppipelinebuild()
dsppipelinebuild() allocates dup pointer by kstrdup(cfg), but then it updates dup variable by strsep(&dup, "|"). As a result when it calls kfree(dup), the dup variable contains NULL.
Found by Linux Driver Verification project (linuxtesting.org) with SVACE.