CVE-2022-49334 Information

Description

In the Linux kernel the following vulnerability has been resolved:

mm/huge_memory: Fix xarray node memory leak

If xas_split_alloc() fails to allocate the necessary nodes to complete the xarray entry split it sets the xa_state to -ENOMEM which xas_nomem() then interprets as \Please allocate more memory\ not as \Please free any unnecessary memory\ (which was the intended outcome). It’s confusing to use xas_nomem() to free memory in this context so call xas_destroy() instead.

Reference

https://git.kernel.org/stable/c/69a37a8ba1b408a1c7616494aa7018e4b3844cbe https://git.kernel.org/stable/c/95c8181b4947e000f3b9b8e5918d899fce77b93d https://git.kernel.org/stable/c/c0c84962e297927ba57fd6ddc2bb000c9d149655