What’s Vulnerable › Vulnerabilities

CVE-2026-46189: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-28 · updated 2026-09-09
• Weakness: CWE-415

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.

Affected products

• Linux kernel: from 4.10 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.88; from 6.13 before 6.18.30 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.12.88, 6.18.30, 6.6.140

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.12.88. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0c63333ff97bd1275294fd12840a0efe9d7a4c59
• https://git.kernel.org/stable/c/1df5711121cdc11e76b889408fdbe459feba1d39
• https://git.kernel.org/stable/c/269967d7693304e1f06ed2dff4ebbbeeb397cda4
• https://git.kernel.org/stable/c/3a231c34c5bc3d3cfc850b877758ec9fdaa8a483
• https://git.kernel.org/stable/c/45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0
• https://git.kernel.org/stable/c/935ee27d0904aa944cbcc979094c20e5ef62eead
• https://git.kernel.org/stable/c/e38e86995df27f1f854063dab1f0c6a513db3faf
• https://git.kernel.org/stable/c/ecc36a82ecfcfdf3c6606d209f22ec5543c410e0
• 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

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