CVE-2026-49427 (GCVE-0-2026-49427)
Vulnerability from cvelistv5
Published
2026-08-19 05:56
Modified
2026-08-20 18:35
CWE
  • CWE-826 - Premature Release of Resource During Expected Lifetime
Summary
Pages belonging to largepage shared memory objects were not explicitly wired. When sendfile(2) transmitted such an object with the SF_NOCACHE flag, it freed the underlying pages after transmission even though existing mappings still referred to them. An unprivileged local user can abuse the bug to access freed kernel memory. This can be exploited to escalate privileges.
Impacted products
Vendor Product Version
FreeBSD FreeBSD Version: 15.1-RELEASE
Version: 15.0-RELEASE
Version: 14.4-RELEASE
Version: 14.3-RELEASE
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Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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