CVE-2026-71971
Last modified
CVE-2026-71971 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. U-Boot before 2026.10-rc3 with CONFIG_IP_DEFRAG enabled contains an out-of-bounds write vulnerability in the __net_defragment() function in net/net.c. Remote attackers can send a crafted IP fragment with non-zero offset and More-Fragments flag set during netboot to corrupt adjacent memory and crash the bootloader..
Description
U-Boot before 2026.10-rc3 with CONFIG_IP_DEFRAG enabled contains an out-of-bounds write vulnerability in the __net_defragment() function in net/net.c. Remote attackers can send a crafted IP fragment with non-zero offset and More-Fragments flag set during netboot to corrupt adjacent memory and crash the bootloader.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| u-boot | u-boot | < 2026.10-rc3 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-71971?
How severe is CVE-2026-71971?
How do I fix CVE-2026-71971?
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-2026-71964CyberPanel 2.4.3, fixed in commit eca0c3c, contains an arbit…6.5
- CVE-2026-71965CyberPanel 2.4.3, fixed in commit eca0c3c, contains an authe…8.8
- CVE-2026-71966CyberPanel 2.4.3, fixed in commit eca0c3c, contains an authe…8.8
- CVE-2026-71967OP-TEE OS through 4.10.0, fixed in commit 0aadfc2, contains …5.5
- CVE-2026-71968OP-TEE OS through 4.10.0, fixed in commit 8794043, contains …6.7
- CVE-2026-71969OP-TEE OS through 4.10.0, fixed in commit 7b8b494, contains …6.7
- CVE-2026-71972U-Boot before 2027.01-rc1 contains an out-of-bounds write vu…5.9
- CVE-2026-71973U-Boot before 2026.10-rc4 contains an integer overflow vulne…5.2
- CVE-2026-71974U-Boot before 2026.10-rc3 contains an out-of-bounds write vu…4.8
- CVE-2026-71979INDI (Instrument Neutral Distributed Interface) indiserver t…7.5
- CVE-2026-7198CWE-284: Improper Access Control in web services in Progress…9.8
- CVE-2026-71980Belledonne Communications bcg729 through 1.1.2 contains an o…7.5
Are you affected by CVE-2026-71971?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
