CVE-2021-3612
HIGHCVSS 7.8/10EPSS 0.69%
Last modified
CVE-2021-3612 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. EPSS estimates a 0.69% chance of exploitation in the next 30 days.
Description
An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.9.0 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux | 8.0 |
| Fedoraproject | Fedora | 34 |
| Debian | Debian Linux | 9.0 |
| Oracle | Communications Cloud Native Core Binding Support Function | 22.1.3 |
| Oracle | Communications Cloud Native Core Network Exposure Function | 22.1.1 |
| Oracle | Communications Cloud Native Core Policy | 22.2.0 |
| Netapp | Cloud Backup | All versions |
| Netapp | Solidfire Baseboard Management Controller Firmware | All versions |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H300e Firmware | All versions |
| Netapp | H500e Firmware | All versions |
| Netapp | H700e Firmware | All versions |
| Netapp | H410s Firmware | All versions |
| Netapp | H410c Firmware | All versions |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1974079Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210805-0005/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1974079Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210805-0005/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3612?
An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
How severe is CVE-2021-3612?
CVE-2021-3612 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3612?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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 2021
- CVE-2021-36095Malicious attacker is able to find out valid user logins by …5.3
- CVE-2021-36096Generated Support Bundles contains private S/MIME and PGP ke…4.9
- CVE-2021-36097Agents are able to lock the ticket without the "Owner" permi…4.3
- CVE-2021-3610A heap-based buffer overflow vulnerability was found in Imag…7.5
- CVE-2021-36100Specially crafted string in OTRS system configuration can al…8.8
- CVE-2021-3611A stack overflow vulnerability was found in the Intel HD Aud…6.5
- CVE-2021-36121An issue was discovered in Echo ShareCare 8.15.5. The file-u…8.8
- CVE-2021-36122An issue was discovered in Echo ShareCare 8.15.5. The UnzipF…8.8
- CVE-2021-36123An issue was discovered in Echo ShareCare 8.15.5. The TextRe…6.5
- CVE-2021-36124An issue was discovered in Echo ShareCare 8.15.5. It does no…9.8
- CVE-2021-36125An issue was discovered in the CentralAuth extension in Medi…7.5
- CVE-2021-36126An issue was discovered in the AbuseFilter extension in Medi…9.8
Are you affected by CVE-2021-3612?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST