This fixes the following security isseus with CVE numbers:
CVE-2026-55614: GHSA-mcfg-c4r7-pjpf — case-sensitive Transfer-Encoding matching
CVE-2026-55612: GHSA-p55c-rmhc-qfm5 — invalid chunk-length state reset
CVE-2026-55613: GHSA-wgwp-64hh-f52p — ubus POST body parse-error desync
The branch also carries hardening with no CVE: one-byte overflow in
uh_urldecode, off-by-one OOB read in uh_b64decode, constant-time
password compare, $p$ crypt-hash handling.
Link: https://github.com/openwrt/openwrt/pull/24259
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit f68fa732873c280f290f16aef32b3240c790b390)
9287454eee