{"id":"CVE-2026-74222","title":"U-Boot before 2026.10-rc5 contains a use-after-free vulnerability in the httpc_recv_cb() function within the lwIP wget implementation","summary":"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…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","cwe":["CWE-416"],"vendor":"u-boot","product":"u-boot","affected":["u-boot < 2026.10-rc5"],"published":"2026-09-29","updated":"2026-09-29","sourceUpdated":"2026-09-29T22:18:33.660","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74222","references":[{"url":"https://github.com/u-boot/u-boot","label":"disclosure@vulncheck.com"},{"url":"https://github.com/u-boot/u-boot/blob/v2026.07/net/lwip/wget.c#L194","label":"disclosure@vulncheck.com"},{"url":"https://github.com/u-boot/u-boot/commit/2d94618a58aeb7630f18eee33419ce48d0fd3616","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc5-use-after-free-in-lwip-wget-receive-callback","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-29T21:49:08.267Z","slug":"CVE-2026-74222","body":"## Overview\n\nU-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}