kernel is vulnerable to Information Disclosure. A local user is able to read random memory from the kernel space due to the way a user calls DMA_FROM_DEVICE
.
access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.7_release_notes/index
access.redhat.com/errata/RHSA-2022:7444
access.redhat.com/security/updates/classification/#moderate
access.redhat.com/solutions/6971358
bugzilla.redhat.com/show_bug.cgi?id=2058395
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/kernel/dma/swiotlb.c?h=v5.17-rc8&id=aa6f8dcbab473f3a3c7454b74caa46d36cdc5d13