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CVE-2026-5398

—
CVSS 3.1
8.4 high
EPSS
<1%p6
Published
()
Modified
Description

The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory. A malicious process can abuse the dangling pointer to grant itself root privileges.

Vendors
freebsd
Products
freebsd
Weakness
CWE-416
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (0.2%)

In the news

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