CVE-2026-89910

Status: ReceivedHigh (7.3)—

In the Linux kernel, the following vulnerability has been resolved:

LoongArch: KVM: Fix uninitialized stack variable issue with dmsintc

Variable vector[] is declared on stack in function dmsintc_inject_irq() and sometimes it is used without initialized. Here fix this issue.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Base score: 7.3

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.15%
Percentile among all scored CVEs: 4
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Primary impactT1005 Data from Local Systemcollection60 %
Secondary impactT1499.004 Application or System Exploitationimpact45 %

Vulnerabilidad local (AV:L/PR:L) en kernel LoongArch/KVM por variable no inicializada. Permite escalada local (T1068) y potencialmente lectura/corrupción de memoria del kernel.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Threat Intelligence Program Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-89910",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.3,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 2
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "03de5eecb0f0f68f29086bc0075c7fd597bf4e4a",
              "lessThan": "f56060b0e10fa5633fac1dc243a25da3a5cdafb1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "03de5eecb0f0f68f29086bc0075c7fd597bf4e4a",
              "lessThan": "81aa3a58b542ed88819115c80a17acd86eacb89d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/loongarch/kvm/intc/dmsintc.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "7.1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/loongarch/kvm/intc/dmsintc.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-16T11:17:00.027",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/81aa3a58b542ed88819115c80a17acd86eacb89d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f56060b0e10fa5633fac1dc243a25da3a5cdafb1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: KVM: Fix uninitialized stack variable issue with dmsintc\n\nVariable vector[] is declared on stack in function dmsintc_inject_irq()\nand sometimes it is used without initialized. Here fix this issue."
    }
  ],
  "lastModified": "2026-09-16T15:18:17.177",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}