CVE-2023-52639 (GCVE-0-2023-52639)

Vulnerability from cvelistv5 – Published: 2024-04-03 14:54 – Updated: 2026-05-11 19:30
VLAI
Title
KVM: s390: vsie: fix race during shadow creation
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: fix race during shadow creation Right now it is possible to see gmap->private being zero in kvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the fact that we add gmap->private == kvm after creation: static int acquire_gmap_shadow(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) { [...] gmap = gmap_shadow(vcpu->arch.gmap, asce, edat); if (IS_ERR(gmap)) return PTR_ERR(gmap); gmap->private = vcpu->kvm; Let children inherit the private field of the parent.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a3508fbe9dc6dd3bece0c7bf889cc085a011738c , < 5df3b81a567eb565029563f26f374ae3803a1dfc (git)
Affected: a3508fbe9dc6dd3bece0c7bf889cc085a011738c , < f5572c0323cf8b4f1f0618178648a25b8fb8a380 (git)
Affected: a3508fbe9dc6dd3bece0c7bf889cc085a011738c , < 28bb27824f25f36e5f80229a358d66ee09244082 (git)
Affected: a3508fbe9dc6dd3bece0c7bf889cc085a011738c , < fe752331d4b361d43cfd0b89534b4b2176057c32 (git)
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Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 6.1.82 , ≤ 6.1.* (semver)
Unaffected: 6.6.22 , ≤ 6.6.* (semver)
Unaffected: 6.7.6 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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      "cveMetadata": "{\"cveId\": \"CVE-2023-52639\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:23:07.950Z\", \"dateReserved\": \"2024-03-06T09:52:12.093Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-03T14:54:47.009Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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

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.