diff --git a/sys-block/mbuffer/Manifest b/sys-block/mbuffer/Manifest
index d2fbf41293d4..be04ddb51246 100644
--- a/sys-block/mbuffer/Manifest
+++ b/sys-block/mbuffer/Manifest
@@ -1,3 +1,4 @@
 DIST mbuffer-20241007.tgz 152029 BLAKE2B d26c0d87abacc8826bf2e6f414fe9264da7b3196c62a9853a8ffb6b118df353977c38ea5b1bf79e71fadcae6585b90b1f21152f742c7fafee08ae4294acceb60 SHA512 cb8f9e962510030f8e1500dcd21a556b73144c445bc12ece3915df201fa5e8849c183546c7ce700e06d1c734c0fdf36e31046ac984e232b64f9b019b54e1ddd2
 DIST mbuffer-20250429.tgz 152402 BLAKE2B 702f028ff310370ceeb6894e0456e68452afec9e353b83bfa875d2f8171af8d008736384382e42a447c9572e7c55d924761d5043be84010589a597870238220b SHA512 9cbf233335b8f7fe4d607f93afdb1797293377f580def420a3b2285b1e777ef33fff7fd7ebbe67fd35dca48127e887de9f833c2d019075f51fcef2e479a8ff00
 DIST mbuffer-20251025.tgz 155376 BLAKE2B 9093d5c9e0a3554bb54af5781b32e9dc614d13771e23a660f0958ea99add18fcd8a5e1a491cc9c0f98267f70196b702528ad7e53f489c3bf25e9541ecdb3a66a SHA512 d1b4d49ed1d6a685a2db5a81cb2203ef92b5f8867bc534b7de6435c80a8e408e245052abc2ff5f79934a0c4079b33d496ba60fae005a5bd3f58a76443b1d31ae
+DIST mbuffer-20260301.tgz 156642 BLAKE2B 5e566218038a9f20514a480be5f6181f02d32401fd81484d886c694bccb45ff6dd8fd08060d9c870dac6cc62925033ab6bd876f8260686210b20666504b77d05 SHA512 755368fc3d614258e8be00da37fa53801dd680b86dc39107bf706685d9630dba25706a87a83f05cd72cc1b146bce27af9e9ca4ddee5bc4e21a669306f6fb66a5
diff --git a/sys-block/mbuffer/mbuffer-20260301.ebuild b/sys-block/mbuffer/mbuffer-20260301.ebuild
new file mode 100644
index 000000000000..7c5a2945c770
--- /dev/null
+++ b/sys-block/mbuffer/mbuffer-20260301.ebuild
@@ -0,0 +1,60 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit autotools optfeature
+
+DESCRIPTION="M(easuring)buffer is a replacement for buffer with additional functionality"
+HOMEPAGE="https://www.maier-komor.de/mbuffer.html"
+SRC_URI="https://www.maier-komor.de/software/mbuffer/${P}.tgz"
+
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~sparc ~x86"
+IUSE="debug ssl test"
+REQUIRED_USE="test? ( ssl )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	ssl? (
+		dev-libs/openssl
+	)
+"
+DEPEND="${RDEPEND}"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-20180410-sysconfdir.patch"
+	"${FILESDIR}/${PN}-20200929-find-OBJDUMP.patch"
+	"${FILESDIR}/${PN}-20231216-autoconf-warning.patch"
+)
+
+src_prepare() {
+	default
+
+	ln -s "${DISTDIR}"/${P}.tgz test.tar # bug #258881
+
+	mv configure.in configure.ac || die
+	eautoreconf
+}
+
+src_configure() {
+	local myeconfargs=(
+		$(use_enable ssl md5)
+		$(use_enable debug)
+	)
+
+	econf "${myeconfargs[@]}"
+}
+
+src_test() {
+	# Enforce MAKEOPTS=-j1 because src_test() spawns multiple listener
+	# using same port and src_install may have problems (with /etc folder)
+	local -x MAKEOPTS=-j1
+
+	default
+}
+
+pkg_postinst() {
+	optfeature "autoloader support" app-arch/mt-st
+}