CVE-2026-52929
Last modified
CVE-2026-52929 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: sctp: stream: fully roll back denied add-stream state When ADD_OUT_STREAMS is denied, SCTP only shrinks the queued chunks and then lowers outcnt. That leaves removed stream metadata behind, so a later re-add can reuse a stale ext and hit a null-pointer dereference in the scheduler get path. Fix the rollback by tearing down the removed stream state the same way other stream resizes do. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: sctp: stream: fully roll back denied add-stream state When ADD_OUT_STREAMS is denied, SCTP only shrinks the queued chunks and then lowers outcnt. That leaves removed stream metadata behind, so a later re-add can reuse a stale ext and hit a null-pointer dereference in the scheduler get path. Fix the rollback by tearing down the removed stream state the same way other stream resizes do. Unschedule the current scheduler state, drop the removed stream ext state with sctp_stream_outq_migrate(), and then reschedule the remaining streams. This keeps scheduler-private RR/FC/PRIO lists consistent while fully rolling back denied outgoing stream additions.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 4.15, < 5.10.259 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.210 | — |
| Linux | Linux Kernel | >= 5.16, < 6.1.176 | — |
| Linux | Linux Kernel | >= 6.2, < 6.6.143 | — |
| Linux | Linux Kernel | >= 6.7, < 6.12.94 | — |
| Linux | Linux Kernel | >= 6.13, < 6.18.36 | — |
| Linux | Linux Kernel | >= 6.19, < 7.0.13 | — |
| Linux | Linux Kernel | 7.1 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-52929?
How severe is CVE-2026-52929?
How do I fix CVE-2026-52929?
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-2026-52923In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-52924In the Linux kernel, the following vulnerability has been re…9.8
- CVE-2026-52925In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-52926In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-52927In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-52928In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-5293The 診断ジェネレータ作成プラグイン (Diagnosis Generator) plugin for WordPre…6.4
- CVE-2026-52930In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2026-52931In the Linux kernel, the following vulnerability has been re…9.8
- CVE-2026-52932In the Linux kernel, the following vulnerability has been re…7.5
- CVE-2026-52933In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2026-52934In the Linux kernel, the following vulnerability has been re…8.8
Are you affected by CVE-2026-52929?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST