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Vulnerability record · CVE-2026-46189 · published 28 May 2026

CVE-2026-46189: Linux kernel double free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.0% CWE-415 · Double freeCWE-763 · CWE-763
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
22References
9 Sep 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/0c63333ff97bd1275294fd12840a0efe9d7a4c59 Patch
https://git.kernel.org/stable/c/1df5711121cdc11e76b889408fdbe459feba1d39 Patch
https://git.kernel.org/stable/c/269967d7693304e1f06ed2dff4ebbbeeb397cda4 Patch
https://git.kernel.org/stable/c/3a231c34c5bc3d3cfc850b877758ec9fdaa8a483 Patch
https://git.kernel.org/stable/c/45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0 Patch
https://git.kernel.org/stable/c/935ee27d0904aa944cbcc979094c20e5ef62eead Patch
https://git.kernel.org/stable/c/e38e86995df27f1f854063dab1f0c6a513db3faf Patch
https://git.kernel.org/stable/c/ecc36a82ecfcfdf3c6606d209f22ec5543c410e0 Patch
https://access.redhat.com/errata/RHSA-2026:30848
https://access.redhat.com/errata/RHSA-2026:33685
https://access.redhat.com/errata/RHSA-2026:33743
https://access.redhat.com/errata/RHSA-2026:35904
https://access.redhat.com/errata/RHSA-2026:36049
https://access.redhat.com/errata/RHSA-2026:36073
https://access.redhat.com/errata/RHSA-2026:36767
https://access.redhat.com/errata/RHSA-2026:38902
https://access.redhat.com/errata/RHSA-2026:40068
https://access.redhat.com/errata/RHSA-2026:40760
https://access.redhat.com/errata/RHSA-2026:47633
https://access.redhat.com/security/cve/CVE-2026-46189
https://bugzilla.redhat.com/show_bug.cgi?id=2482588
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46189.json

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Source: NIST National Vulnerability Database (record CVE-2026-46189), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.