CVE-2026-74222
HIGH
8,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH
8,2
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: high
Description
AI Translation Available
U-Boot before 2026.10-rc5 contains a use-after-free vulnerability in the httpc_recv_cb() function within the lwIP wget implementation. When HTTP data storage fails, the callback frees the connection PCB but returns ERR_BUF instead of ERR_ABRT, causing the TCP input path to access released memory and crash the bootloader.
416
Use After Free
StableCommon Consequences
Security Scopes Affected:
Integrity
Availability
Confidentiality
Potential Impacts:
Modify Memory
Dos: Crash, Exit, Or Restart
Read Memory
Execute Unauthorized Code Or Commands
Applicable Platforms
Languages:
Memory-Unsafe, C, C++
https://github.com/u-boot/u-boot
https://github.com/u-boot/u-boot/blob/v2026.07/net/lwip/wget.c#L194
https://github.com/u-boot/u-boot/commit/2d94618a58aeb7630f18eee33419ce48d0fd3616
https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc5-use-after-free-i…