CVE-2026-71971
U-Boot before 2026.10-rc3 with CONFIG_IP_DEFRAG enabled contains an out-of-bounds write…
- Risk score
- 60/100
- CVSS
- 8.2 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 29 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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.
- Affected
- See advisory
- Fix
- Upgrade the product to 2026.10 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.2 high
- Remotely exploitable without logging in
References
Original 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.
Last activity 29 Sep 2026. Patch Forecast updates every hour.