CVE-2026-90130vdpa_sim: fix cleanup after worker creation failure
- —Not scoredno CVSS score yet
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 32 days later
· 32 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 76acfa7bc54f1e3b9dde396e0a3534493419fd6f – < feafa109f031ed111f7f968e447c13985db498e0
- affected 76acfa7bc54f1e3b9dde396e0a3534493419fd6f – < 05ddc94afb69e36df59e88cfa9e5c7bf9d10cfd0
- affected 76acfa7bc54f1e3b9dde396e0a3534493419fd6f – < 68b726b3a01fb02a68843781b17d05ef3d759987
- affected 76acfa7bc54f1e3b9dde396e0a3534493419fd6f – < ca6f3fa599cb764518df595368b743f856fdb516
- affected 76acfa7bc54f1e3b9dde396e0a3534493419fd6f – < bd670e5dfd2b01fd9692f61fa1456434c54026a4
- affected 6.4
- unaffected < 6.4
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/feafa109f031ed111f7f968e447c13985db498e0 (opens in a new tab)
- https://git.kernel.org/stable/c/05ddc94afb69e36df59e88cfa9e5c7bf9d10cfd0 (opens in a new tab)
- https://git.kernel.org/stable/c/68b726b3a01fb02a68843781b17d05ef3d759987 (opens in a new tab)
- https://git.kernel.org/stable/c/ca6f3fa599cb764518df595368b743f856fdb516 (opens in a new tab)
- https://git.kernel.org/stable/c/bd670e5dfd2b01fd9692f61fa1456434c54026a4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-81723 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-90130)Record last updated .