CVE-2021-47537

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> octeontx2-af: Fix a memleak bug in rvu_mbox_init()<br /> <br /> In rvu_mbox_init(), mbox_regions is not freed or passed out<br /> under the switch-default region, which could lead to a memory leak.<br /> <br /> Fix this bug by changing &amp;#39;return err&amp;#39; to &amp;#39;goto free_regions&amp;#39;.<br /> <br /> This bug was found by a static analyzer. The analysis employs<br /> differential checking to identify inconsistent security operations<br /> (e.g., checks or kfrees) between two code paths and confirms that the<br /> inconsistent operations are not recovered in the current function or<br /> the callers, so they constitute bugs.<br /> <br /> Note that, as a bug found by static analysis, it can be a false<br /> positive or hard to trigger. Multiple researchers have cross-reviewed<br /> the bug.<br /> <br /> Builds with CONFIG_OCTEONTX2_AF=y show no new warnings,<br /> and our static analyzer no longer warns about this code.