CVE-2026-53139

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/v3d: Skip CSD when it has zeroed workgroups<br /> <br /> A compute shader dispatch encodes its workgroup counts in the CFG0..CFG2<br /> registers. Kicking off a dispatch with a zero count in any of the three<br /> dimensions is invalid. First, the hardware will process 0 as 65536,<br /> while the user-space driver exposes a maximum of 65535. Over that, a<br /> submission with a zeroed workgroup dimension should be a no-op.<br /> <br /> These zeroed counts can reach the dispatch path through an indirect CSD<br /> job, whose workgroup counts are only known once the indirect buffer is<br /> read and may legitimately be zero, but such scenario should only result in<br /> a no-op.<br /> <br /> Overwrite the indirect CSD job workgroup counts with the indirect BO<br /> ones, even if they are zeroed, and don&amp;#39;t submit the job to the hardware<br /> when any of the workgroup counts is zero, so the job completes immediately<br /> instead of running the shader.