CVE-2026-93823
CVE CVE-2026-93823EUVD EUVD-2026-86212Published 2026-09-24T16:03:01.000ZLast changed 2026-09-25T12:43:32.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Let driver decide buffer size at AMDKFD_IOC_GET_DMABUF_INFO ioctl amdkfd driver needs allocate buffer to return bo metadata to user space. The buffer size is controlled by user currently. It is a potential security issue that hostile value (e.g. 2 GiB) lets any render-group user trigger order-MAX allocation/OOM in kernel context. This patch first finds bo metadata size. If the size is smaller than user provided value drive can safely allocate buffer in kernel space and copy to user space buffer. If not, driver will let user know, not allocate and copy. User will redo with new buffer in user space. This patch lets driver decide buffer allocation size to avoid potential hostile size from user space. (cherry picked from commit f54ce9e8cbd3abe0eda3a285f54dc4f572fe589a)
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 5.0; patch: 6.18.53; patch: 6.12.111; patch: 0; patch: 7.2; 1dde0ea95b782425b95455d487cb44991525a1d1 <a65ccabde6deb95baf9442bd98299e2248884162; 1dde0ea95b782425b95455d487cb44991525a1d1 <8242a8d9d7194d5ef8a8b38a5621ca0966a3ec15; 1dde0ea95b782425b95455d487cb44991525a1d1 <2d9fd0f01550aab4a0a1984b4379e50545906248
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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