CVE-2026-46220
5.5 MEDIUMIn the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/sdma4: replace BUG_ON with WARN_ON in fence emission sdm...
Published: 2026-05-28 · Last updated: 2026-06-10
Severity and scoring
- CVSS
- 5.5 MEDIUM
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-617
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
Description
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)
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-46220
- [Patch]https://git.kernel.org/stable/c/0b91ea46bb68abf98a082bf239092253bbd6aaa2
- [Patch]https://git.kernel.org/stable/c/25e7d56a39657d56d1ea6d78992f7ed15dedb412
- [Patch]https://git.kernel.org/stable/c/4f7ca00fa91daf0795ec6b3b130c5ebba1f155fe
- [Patch]https://git.kernel.org/stable/c/78d2e624fa073c14970aa097adcf3ea31c157a66
- [Patch]https://git.kernel.org/stable/c/a4fd82fb0757c180bf622907397c528b89a827b2
- [Patch]https://git.kernel.org/stable/c/d331fb241a4602253976ddd65144a8ba2b05665d
- [Patch]https://git.kernel.org/stable/c/d4c56932d29773e278be6a65a5384a36c95b89a4
- [Patch]https://git.kernel.org/stable/c/ecaa80318e900ca0c3f687742ede33b41cfd2f8e
Related CVEs
Same vendor
- CVE-2026-46273 — In the Linux kernel, the following vulnerability has been resolved: ibmveth: Disable GSO for packets with small MSS Some physical adapt... (8.6 HIGH)
- CVE-2026-46272 — In the Linux kernel, the following vulnerability has been resolved: coresight: tmc-etr: Fix race condition between sysfs and perf mode ... (4.7 MEDIUM)
- CVE-2026-46271 — In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: do WoW offloads only on primary link In case of multi... (7.8 HIGH)
- CVE-2026-46270 — In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() ... (8.4 HIGH)
- CVE-2026-46269 — In the Linux kernel, the following vulnerability has been resolved: pinctrl: canaan: k230: Fix NULL pointer dereference when parsing dev... (5.5 MEDIUM)
Same CWE
- CVE-2026-52718 — A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad (6.5 MEDIUM)
- CVE-2026-29116 — A vulnerability has been found in some Dahua products could allow an unauthenticated remote attacker to send a specially crafted packet, ...
- CVE-2026-29115 — A vulnerability has been found in some Dahua products could allow an authenticated remote attacker to send a specially crafted packet, tr...
- CVE-2026-46543 — Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm (5.3 MEDIUM)
- CVE-2026-46542 — Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm (4.3 MEDIUM)