CVE-2026-46220
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
drm/amdgpu/sdma4: replace BUG_ON with WARN_ON in fence emission
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)
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 | affected | git | ecaa80318e900ca0c3f687742ede33b41cfd2f8e | Unavailable | None listed |
| 2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 | affected | git | 25e7d56a39657d56d1ea6d78992f7ed15dedb412 | Unavailable | None listed |
| 2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 | affected | git | d4c56932d29773e278be6a65a5384a36c95b89a4 | Unavailable | None listed |
| 2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 | affected | git | 4f7ca00fa91daf0795ec6b3b130c5ebba1f155fe | Unavailable | None listed |
| 2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 | affected | git | d331fb241a4602253976ddd65144a8ba2b05665d | Unavailable | None listed |
| 2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 | affected | git | 0b91ea46bb68abf98a082bf239092253bbd6aaa2 | Unavailable | None listed |
| 2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 | affected | git | a4fd82fb0757c180bf622907397c528b89a827b2 | Unavailable | None listed |
| 2130f89ced2cc0f5113bb427c1cbc7a4ca7729c7 | affected | git | 78d2e624fa073c14970aa097adcf3ea31c157a66 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.12 | Unavailable | None listed |
| 5.10.258 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.209 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.175 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.140 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.90 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.32 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.9 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |