{"id":"CVE-2026-74222","published":"2026-09-29T22:18:33.660","lastModified":"2026-09-29T22:18:33.660","description":"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.","cvssScore":8.2,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","cwes":["CWE-416"],"vendors":[],"products":[],"references":[{"url":"https://github.com/u-boot/u-boot","tags":[]},{"url":"https://github.com/u-boot/u-boot/blob/v2026.07/net/lwip/wget.c#L194","tags":[]},{"url":"https://github.com/u-boot/u-boot/commit/2d94618a58aeb7630f18eee33419ce48d0fd3616","tags":[]},{"url":"https://www.vulncheck.com/advisories/u-boot-before-2026.10-rc5-use-after-free-in-lwip-wget-receive-callback","tags":[]}],"exploitRefs":[{"url":"https://github.com/u-boot/u-boot","tags":[]},{"url":"https://github.com/u-boot/u-boot/blob/v2026.07/net/lwip/wget.c#L194","tags":[]},{"url":"https://github.com/u-boot/u-boot/commit/2d94618a58aeb7630f18eee33419ce48d0fd3616","tags":[]}],"hasPoc":true,"ai":null}