CVE-2026-58091
Last modified
CVE-2026-58091 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a channel would block, it releases the sync group list lock and sleeps. EPSS estimates a 0.13% chance of exploitation in the next 30 days.
Description
The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a channel would block, it releases the sync group list lock and sleeps. Upon reawakening, it is possible that the sync group structure is freed, but the implementation did not handle this possibility. On a system with a multiple audio devices, an unprivileged local user can exploit this use-after-free to escalate privileges.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Freebsd | Freebsd | 14.4 | P1 |
| Freebsd | Freebsd | 15.0 | P1 |
| Freebsd | Freebsd | 15.1 | P1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-58091?
How severe is CVE-2026-58091?
How do I fix CVE-2026-58091?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-58086As an inadvertent side effect of an unrelated code change, P…8.1
- CVE-2026-58087The GETALL and SETALL commands in semctl(2) recorded the num…7.8
- CVE-2026-58088The ELF core dump code counted the number of dumpable VM map…7.4
- CVE-2026-58089When a process calls execve(2) to execute a setuid or setgid…7.8
- CVE-2026-5809The wpForo Forum plugin for WordPress is vulnerable to Arbit…7.1
- CVE-2026-58090The SOCK_STREAM receive path in the unix socket implementati…7.8
- CVE-2026-58092In FreeBSD 15.0, the kernel structure used to represent user…8.1
- CVE-2026-58093The TIOCSCTTY ioctl handler drops the tty lock in order to a…7
- CVE-2026-58094The FIOSSHMLPGCNF ioctl(2) operation configures the page siz…7.8
- CVE-2026-58095mp_Enddisc() used incorrect length calculations when formatt…8.8
- CVE-2026-58096LcpDecodeConfig() did not validate the length of received en…8.8
- CVE-2026-58097mp_SetEnddisc() copied a user-supplied PSN endpoint value wi…7.8
Are you affected by CVE-2026-58091?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST