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Review reviewHigh

CVE-2026-46189

Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8

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
7.8
EPSS
0.14%
4.12% percentile
CISA KEV
Not listed
Published
2026.05.28
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 7.8

Vulnerability overview

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 product and versions

Product
Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8
Affected versions
>= 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 < 269967d7693304e1f06ed2dff4ebbbeeb397cda4, >= 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 < 1df5711121cdc11e76b889408fdbe459feba1d39, >= 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 < 3a231c34c5bc3d3cfc850b877758ec9fdaa8a483, >= 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 < ecc36a82ecfcfdf3c6606d209f22ec5543c410e0, >= 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 < 45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0, >= 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 < 0c63333ff97bd1275294fd12840a0efe9d7a4c59, >= 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 < 935ee27d0904aa944cbcc979094c20e5ef62eead, >= 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 < e38e86995df27f1f854063dab1f0c6a513db3faf, >= 4.10, >= 4.10 < 5.10.258, >= 5.11 < 5.15.209, >= 5.16 < 6.1.175, >= 6.2 < 6.6.140, >= 6.7 < 6.12.88, >= 6.13 < 6.18.30, >= 6.19 < 7.0.7, 7.1
Fixed versions
5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.88, 6.18.30, 7.0.7

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-1341, CWE-415