CVE-2026-58090 — HIGH (7.8)

Vulnerability Description

The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket buffer before processing them. Some error paths would free those messages, leaving freed data mbufs in the receive socket buffer. An unprivileged local user can exploit this use-after-free to escalate privileges.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-416

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:57.unix.asc

FAQ

What is CVE-2026-58090?

CVE-2026-58090 is a vulnerability with a CVSS score of 7.8 (HIGH). The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket buffer before processing them. Some error paths would free those messages, leavi...

How severe is CVE-2026-58090?

CVE-2026-58090 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-58090?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.