CVE-2026-46189 (GCVE-0-2026-46189)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-07-09 12:09
VLAI
Title
RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path
Summary
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.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-1341 - Multiple Releases of Same Resource or Handle
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 269967d7693304e1f06ed2dff4ebbbeeb397cda4 (git)
Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 1df5711121cdc11e76b889408fdbe459feba1d39 (git)
Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 3a231c34c5bc3d3cfc850b877758ec9fdaa8a483 (git)
Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < ecc36a82ecfcfdf3c6606d209f22ec5543c410e0 (git)
Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0 (git)
Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 0c63333ff97bd1275294fd12840a0efe9d7a4c59 (git)
Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 935ee27d0904aa944cbcc979094c20e5ef62eead (git)
Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < e38e86995df27f1f854063dab1f0c6a513db3faf (git)
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Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux BaseOS (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux BaseOS (v. 8)     cpe:/o:redhat:enterprise_linux:8::baseos
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Red Hat Red Hat Enterprise Linux BaseOS E4S (v.9.2)     cpe:/o:redhat:rhel_e4s:9.2::baseos
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Red Hat Red Hat Enterprise Linux BaseOS E4S (v.9.4)     cpe:/o:redhat:rhel_e4s:9.4::baseos
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Red Hat Red Hat Enterprise Linux BaseOS (v. 9)     cpe:/o:redhat:enterprise_linux:9::baseos
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Enterprise Linux Real Time for NFV (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux NFV (v. 8)     cpe:/a:redhat:enterprise_linux:8::nfv
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Red Hat Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::nfv
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Red Hat Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::nfv
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Red Hat Red Hat Enterprise Linux Real Time for NFV (v. 9)     cpe:/a:redhat:enterprise_linux:9::nfv
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Red Hat Red Hat Enterprise Linux Real Time (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux RT (v. 8)     cpe:/a:redhat:enterprise_linux:8::realtime
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Red Hat Red Hat Enterprise Linux Real Time E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::realtime
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Red Hat Red Hat Enterprise Linux Real Time E4S (v.9.4)     cpe:/a:redhat:rhel_e4s:9.4::realtime
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Red Hat Red Hat Enterprise Linux Real Time (v. 9)     cpe:/a:redhat:enterprise_linux:9::realtime
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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        "dateUpdated": "2026-06-14T18:01:23.441Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
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    "dateReserved": "2026-05-13T15:03:33.104Z",
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      "product_status:fixed": "1",
      "product_status:known_affected": "1",
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      "title": "RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46189.json",
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-07-13T17:07:15+00:00",
      "cve": "CVE-2026-46189",
      "id": "CVE-2026-46189",
      "initial_release_date": "2026-05-28T00:00:00+00:00",
      "product_status:fixed": "1501",
      "product_status:known_affected": "50",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46189.json",
      "version": "3"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.