{"id":"CVE-2026-89814","published":"2026-09-16T11:16:46.610","lastModified":"2026-09-17T10:17:04.577","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: clamp the isolation index for rings outside a partition\n\nadev->isolation[] has one slot per partition, but a ring that is not\nassigned to one keeps AMDGPU_XCP_NO_PARTITION, which is ~0, so indexing\nthe array with it is out of bounds. SDMA submissions hit this on both\nthe isolation enforcement and the VM flush path and trip UBSAN.\n\nFall back to the first slot the way the cleaner shader path already\ndoes, and stop taking the address before the ring type check that makes\nit relevant.","cvssScore":7.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0bfb938182d1313e5cac32ae38dbaaa4eabe4af4","tags":[]},{"url":"https://git.kernel.org/stable/c/964de255497ffd7cb8a86e405b8ac6d927e7e177","tags":[]},{"url":"https://git.kernel.org/stable/c/b30900566642ceb2c9e12b56c2afec28d0fd91a0","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"This vulnerability allows out-of-bounds memory access in the Linux kernel's AMDGPU driver, leading to potential system instability or security issues.","exploitability":"Exploitation requires root privileges and specific conditions, such as a ring not assigned to a partition. The vulnerability is not easily exploitable without these conditions.","blast_radius":"If exploited, the vulnerability could lead to system crashes or privilege escalation, impacting the integrity and availability of the system.","remediation":"Upgrade to the Linux kernel version 6.1.17 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["kernel","memory-access","stability","privilege-escalation"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-08T08:43:25.931Z"}}