Medium [CVE-2026-68250] Linux kernel: Denial of Service in amdgpu SDMA due to BUG_ON
This medium-severity Red Hat Linux advisory covers CVE-2026-68250 affecting Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8.
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Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/sdma5.2: replace BUG_ON() with WARN_ON() There's no need to crash the kernel for these cases. (cherry picked from commit ae658afc7f47f6147371ec42cc6b1a793dfdb5af) A local attacker could potentially trigger a condition that would previously lead to a kernel panic due to a `BUG_ON()` macro.
This vulnerability could result in a system-wide Denial of Service (DoS), making the system unresponsive. The issue has been resolved by replacing the `BUG_ON()` with `WARN_ON()`, which logs a warning instead of crashing the kernel.
Red Hat severity: Moderate — CVSS 4.7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-617.
Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux for NVIDIA 26 as not affected.
Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: kernel-rt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
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