UNKNOWN NVD

CVE-2026-49427

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 th

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.

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:44.posixshm.asc

Published: 2026-08-19 · Source: NVD · Feed updated: 2026-08-20

This unknown severity vulnerability was published on 2026-08-19 via NVD.

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