https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 15:41:16 +0000 https://vulnerability.circl.lu/vuln/cve-2026-46220 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>drm/amdgpu/sdma4: replace BUG_ON with WARN_ON in fence emission</p> <p>sdma_v4_0_ring_emit_fence() contains two BUG_ON(addr &amp; 0x3) assertions that verify fence writeback addresses are dword-aligned. These assertions can be reached from unprivileged userspace via crafted DRM_IOCTL_AMDGPU_CS submissions, causing a fatal kernel panic in a scheduler worker thread.</p> <p>Replace both BUG_ON() calls with WARN_ON() to log the condition without crashing the kernel. A misaligned fence address at this point indicates a driver bug, but crashing the kernel is never the correct response when the assertion is reachable from userspace.</p> <p>The CS IOCTL path is the correct place to filter invalid submissions; the ring emission callback is too late to do anything about it.</p> <p>(cherry picked from commit b90250bd933afd1ba94d86d6b13821997b22b18e)</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>drm/amdgpu/sdma4: replace BUG_ON with WARN_ON in fence emission</p> <p>sdma_v4_0_ring_emit_fence() contains two BUG_ON(addr &amp; 0x3) assertions that verify fence writeback addresses are dword-aligned. These assertions can be reached from unprivileged userspace via crafted DRM_IOCTL_AMDGPU_CS submissions, causing a fatal kernel panic in a scheduler worker thread.</p> <p>Replace both BUG_ON() calls with WARN_ON() to log the condition without crashing the kernel. A misaligned fence address at this point indicates a driver bug, but crashing the kernel is never the correct response when the assertion is reachable from userspace.</p> <p>The CS IOCTL path is the correct place to filter invalid submissions; the ring emission callback is too late to do anything about it.</p> <p>(cherry picked from commit b90250bd933afd1ba94d86d6b13821997b22b18e)</p> https://vulnerability.circl.lu/vuln/cve-2026-46220