CVE-2025-71155 (GCVE-0-2025-71155)

Vulnerability from cvelistv5 – Published: 2026-01-23 14:25 – Updated: 2026-05-23 16:03
VLAI
Title
KVM: s390: Fix gmap_helper_zap_one_page() again
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix gmap_helper_zap_one_page() again A few checks were missing in gmap_helper_zap_one_page(), which can lead to memory corruption in the guest under specific circumstances. Add the missing checks.
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: 5deafa27d9ae040b75d392f60b12e300b42b4792 , < 2af2abbcbf8573100288e8f8aea2dab8a2a0ceb7 (git)
Affected: 5deafa27d9ae040b75d392f60b12e300b42b4792 , < 2f393c228cc519ddf19b8c6c05bf15723241aa96 (git)
Affected: 919efcadb63fc3d3a82c3de7194140e0b28903dc (git)
Affected: 6.17.4 , < 6.18 (semver)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.4 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
      "aggregate_severity": "None",
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      "cve": "CVE-2025-71155",
      "id": "CVE-2025-71155",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: KVM: s390: Fix gmap_helper_zap_one_page() again",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-71155.json",
      "version": "3"
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}



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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.


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