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CVE-2026-5398

nvd nist
Published: Apr 22, 2026Modified: Jun 17, 2026

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8.4
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.5 / Impact: 5.9
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Affected (33)

Products: Freebsd: Freebsd
Freebsd
1 product
Freebsd
Configuration A
33 vulnerable
Vulnerable SoftwareAffected Versions
Freebsd
Freebsd
Version 13.5
Freebsd
Version 13.5 beta3
Freebsd
Version 13.5 p10
Freebsd
Version 13.5 p11
Freebsd
Version 13.5 p1
Freebsd
Version 13.5 p2
Freebsd
Version 13.5 p3
Freebsd
Version 13.5 p4
Freebsd
Version 13.5 p5
Freebsd
Version 13.5 p6
Freebsd
Version 13.5 p7
Freebsd
Version 13.5 p8
Freebsd
Version 13.5 p9
Freebsd
Version 14.3
Freebsd
Version 14.3 p10
Freebsd
Version 14.3 p1
Freebsd
Version 14.3 p2
Freebsd
Version 14.3 p3
Freebsd
Version 14.3 p4
Freebsd
Version 14.3 p5
Freebsd
Version 14.3 p6
Freebsd
Version 14.3 p7
Freebsd
Version 14.3 p8
Freebsd
Version 14.3 p9
Freebsd
Version 14.4
Freebsd
Version 14.4 p1
Freebsd
Version 14.4 rc1
Freebsd
Version 15.0
Freebsd
Version 15.0 p1
Freebsd
Version 15.0 p2
Freebsd
Version 15.0 p3
Freebsd
Version 15.0 p4
Freebsd
Version 15.0 p5

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (1)

Source: secteam@freebsd.org
Vendor Advisory

Timeline

No history available yet.