CVE-2022-50819

A flaw was found in the Linux kernel’s udmabuf subsystem where the scatter-gather (sg) pointer was not properly set to NULL if creation of the sg table failed. If userspace attempts to map a dmabuf and the sg table allocation fails (e.g., due to memory exhaustion), the kernel later attempts to free an invalid sg pointer during dmabuf release, causing a NULL pointer dereference and kernel crash

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.