CVE-2026-49416 (GCVE-0-2026-49416)

Vulnerability from cvelistv5 – Published: 2026-06-27 09:25 – Updated: 2026-06-27 09:25
VLAI
Title
Integer overflow in vt(4) CONS_HISTORY ioctl
Summary
The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of the allocation. An unprivileged local user with access to a vt(4) device can trigger an out-of-bounds write in the kernel, potentially escalating privileges.
Severity
No CVSS data available.
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
FreeBSD FreeBSD Affected: 15.0-RELEASE , < p10 (release)
Affected: 14.4-RELEASE , < p6 (release)
Affected: 14.3-RELEASE , < p15 (release)
Create a notification for this product.
Date Public
2026-06-09 23:30
Credits
Ed Maste
Show details on NVD website
To clipboard 

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        }
      ],
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              "lang": "en",
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            }
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      "providerMetadata": {
        "dateUpdated": "2026-06-27T09:25:12.443Z",
        "orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
        "shortName": "freebsd"
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  }
}


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