CVE-2026-90130
CVE CVE-2026-90130EUVD EUVD-2026-81723Published 2026-09-17T16:06:31.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: vdpa_sim: fix cleanup after worker creation failure vdpasim_create() leaves vdpasim->worker as an ERR_PTR when kthread_run_worker() fails. The error path then drops the device reference, which releases the partially initialized simulator. vdpasim_free() unconditionally passes the worker pointer to kthread_destroy_worker(), so the ERR_PTR is dereferenced and can trigger a general protection fault. Store the worker error, clear the pointer, and only clean up the worker when it was successfully initialized. Also make the release path tolerate partially initialized objects by guarding virtqueue and IOTLB cleanup, since the same release path can be reached from other initialization failures. I found this bug myself, though the patch was written with AI assistance.
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 patch: 7.3-rc1; patch: 7.2.6; 76acfa7bc54f1e3b9dde396e0a3534493419fd6f <68b726b3a01fb02a68843781b17d05ef3d759987; patch: 6.12.110; patch: 0; 76acfa7bc54f1e3b9dde396e0a3534493419fd6f <feafa109f031ed111f7f968e447c13985db498e0; 76acfa7bc54f1e3b9dde396e0a3534493419fd6f <ca6f3fa599cb764518df595368b743f856fdb516; 76acfa7bc54f1e3b9dde396e0a3534493419fd6f <05ddc94afb69e36df59e88cfa9e5c7bf9d10cfd0; 76acfa7bc54f1e3b9dde396e0a3534493419fd6f <bd670e5dfd2b01fd9692f61fa1456434c54026a4; 6.4; patch: 6.18.52; patch: 6.6.157
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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