Answer in brief
CVE-2026-46220 records a Unknown severity vulnerability in drm/amdgpu/sdma4: replace BUG_ON with WARN_ON in fence emission. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 <ecaa80318e900ca0c3f687742ede33b41cfd2f8e || >=2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 <25e7d56a39657d56d1ea6d78992f7ed15dedb412 || >=2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 <d4c56932d29773e278be6a65a5384a36c95b89a4 || >=2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 <4f7ca00fa91daf0795ec6b3b130c5ebba1f155fe || >=2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 <d331fb241a4602253976ddd65144a8ba2b05665d || >=2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 <0b91ea46bb68abf98a082bf239092253bbd6aaa2 || >=2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 <a4fd82fb0757c180bf622907397c528b89a827b2 || >=2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 <78d2e624fa073c14970aa097adcf3ea31c157a66 | ecaa80318e900ca0c3f687742ede33b41cfd2f8e, 25e7d56a39657d56d1ea6d78992f7ed15dedb412, d4c56932d29773e278be6a65a5384a36c95b89a4, 4f7ca00fa91daf0795ec6b3b130c5ebba1f155fe, d331fb241a4602253976ddd65144a8ba2b05665d, 0b91ea46bb68abf98a082bf239092253bbd6aaa2, a4fd82fb0757c180bf622907397c528b89a827b2, 78d2e624fa073c14970aa097adcf3ea31c157a66 |
| Linux/Linuxgeneric | 4.12 | Not reported |
Published upstream
May 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 6, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/sdma4: replace BUG_ON with WARN_ON in fence emission sdma_v4_0_ring_emit_fence() contains two BUG_ON(addr & 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. 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. The CS IOCTL path is the correct place to filter invalid submissions; the ring emission callback is too late to do anything about it. (cherry picked from commit b90250bd933afd1ba94d86d6b13821997b22b18e)
Quoted source text, attributed separately from HOL analysis.