CVE-2026-46189
In the Linux kernel, the following vulnerability has been resolved: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path Sashiko points out that pvrdma_uar_free() is already called within pvrdma_dealloc_ucontext(), so calling it before triggers a double free.
Affected versions
Linux kernel versions
4.10
and later are affected. Fixed in
5.10.258,
5.15.209,
6.1.175,
6.6.140,
6.12.88,
6.18.30,
7.0.7,
7.1-rc3
and their respective stable series.
References
The following references provide additional information about CVE-2026-46189 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/0c63333ff97bd1275294fd12840a0efe9d7a4c59
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PatchKernel patch commithttps://git.kernel.org/stable/c/1df5711121cdc11e76b889408fdbe459feba1d39
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PatchKernel patch commithttps://git.kernel.org/stable/c/269967d7693304e1f06ed2dff4ebbbeeb397cda4
Frequently asked questions
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What is CVE-2026-46189?
CVE-2026-46189 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.10 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46189 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-46189?
Yes — CVE-2026-46189 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 4.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46189 actively exploited?
No — CVE-2026-46189 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.