CVE-2026-49427
High · 8.8CVSS
8.8
EPSS
—
Published
Aug 19, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|