CVE-2026-64051 (GCVE-0-2026-64051)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-07-20 13:42
VLAI
Title
accel/qaic: Add overflow check to remap_pfn_range during mmap
Summary
In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Add overflow check to remap_pfn_range during mmap The call to remap_pfn_range in qaic_gem_object_mmap is susceptible to (re)mapping beyond the VMA if the BO is too large. This can cause use after free issues when munmap() unmaps only the VMA region and not the additional mappings. To prevent this, check the remaining size of the VMA before remapping and truncate the remapped length if sg->length is too large. [jhugo: fix braces from checkpatch --strict]
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ff13be8303336ead5621712f2c55012d738878b5 , < 9baafc2fea096279e75480f93fd5942e8336b510 (git)
Affected: ff13be8303336ead5621712f2c55012d738878b5 , < 8dd6edbe26770df147136c3f2ac976c873b82650 (git)
Affected: ff13be8303336ead5621712f2c55012d738878b5 , < 97a8e89cdef36207a8776edc03d6931763a06ad0 (git)
Affected: ff13be8303336ead5621712f2c55012d738878b5 , < 8c795012d0e06b7740e40319b86ff8d2a435098d (git)
Affected: ff13be8303336ead5621712f2c55012d738878b5 , < aa16b2bc0f02709919e2435f531406531e5bcc69 (git)
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Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.142 , ≤ 6.6.* (semver)
Unaffected: 6.12.92 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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        }
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    "datePublished": "2026-07-19T15:39:34.608Z",
    "dateReserved": "2026-07-19T07:54:57.029Z",
    "dateUpdated": "2026-07-20T13:42:50.752Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-07-20T15:27:30+00:00",
      "cve": "CVE-2026-64051",
      "id": "CVE-2026-64051",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "199",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: accel/qaic: Add overflow check to remap_pfn_range during mmap",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64051.json",
      "version": "3"
    }
  }
}



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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

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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.