From patchwork Wed Apr 8 11:31:35 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hitendra Prajapati X-Patchwork-Id: 85522 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08A5A1073C9F for ; Wed, 8 Apr 2026 11:31:46 +0000 (UTC) Received: from mail-dl1-f49.google.com (mail-dl1-f49.google.com [74.125.82.49]) by mx.groups.io with SMTP id smtpd.msgproc01-g2.104060.1775647904161829858 for ; Wed, 08 Apr 2026 04:31:44 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=@mvista.com header.s=google header.b=Hh6UHuqo; spf=pass (domain: mvista.com, ip: 74.125.82.49, mailfrom: hprajapati@mvista.com) Received: by mail-dl1-f49.google.com with SMTP id a92af1059eb24-12732165d1eso8476892c88.1 for ; Wed, 08 Apr 2026 04:31:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mvista.com; s=google; t=1775647903; x=1776252703; darn=lists.openembedded.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=tW4UXHSa6dtYgsGbp/yBbAdyndBqZuM1F1GSifI7GFc=; b=Hh6UHuqoghEHWfk7pPYWE4RUbFkHgYM+1cAokU4RCrkU5qDYW1xZhZTPClikfEUl5u 6KXTVjZB9Q1/xckQ19KqdsAXU7X7DEOeFHoWmHj8ij4YARKQ+cc0tsL4YEANnGWK0/R2 T2kaIGHYut6l+VexL8S9OMQoZ3IlW/iFi9Jew= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775647903; x=1776252703; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=tW4UXHSa6dtYgsGbp/yBbAdyndBqZuM1F1GSifI7GFc=; b=PrLm6ke/SVXvEqDqGXmtRN92Q1H/9X4TQTXhHsxGBFPEWRQ7RrL64OSnhXd1FDyB0m obnqyY2NeDzzkkt8zLA+8pwRiwRAOrALP5dZKW0aQ+Of3judO6+YD2O8vZ0H2brybFRU 67It7LY9ONJBR+1N+eIMDQGvBnUpQ7ty+FyQ9npqwi+azv4LKqa9SajiEclyYxFbgvef 2+wVVMDXdAf0OefKssAmBH05Uy/HpPP5hI5yfe1gvV9lbbqnsEjo6X4+YjI5zflNhdko 1ekYfaz2G1vV7dTvrUtcFuqoG4cH1agImaAgjJlYpu8m6rg0QXfAe/+oXa7fA0A8mIBH sBEg== X-Gm-Message-State: AOJu0YysZp2DRoetcJ2Vcw8d2h+r9pV4RSDw7kWAqGyWjSuMqPZFnJse gqMX5kfWCDbKJpI8HjUucgmdEqd4jjB7zW9gAaTjcXneirZMVP5YsFpxNOYmCMDXyyFu0Mo/cys svSWHCj0= X-Gm-Gg: AeBDievueHRohWbJD9Jrl7BNqy77/HlTlJpaBPKFjkJ0jzLGbryTF4pPmX79sI7y5SI yKhW7NKan3eiNHSe3JTo542nKB7oIpfmLkpjiarvFSOwuAA5LJHu4qv5in20Gj6Z8C/zECkQIUl DUj7VAohOOTrEw/bRTz0APniyxs4vHyVJaufcfWZL00J5Ei+SKQjbUhw3KPxHkx322VIB8/s/Rs eRiShzh8CAPQYLNi4XuckYR51SLUy83mihpBnNKU0DODeIbJFu3VgZKAvDlpPiKCVlQG37bYmzN Xx4Jgmn9imop3JsnF7krFKyvES0+e0pvyVmBXVlPphyPqWGOPlSSt1B5q6oy1JXoL+s4AOI1tU/ L/rDbyFlAaLoW7UWGEIJmlCb5KBiLB9fqbChSlET7SD/LVflSwsA0+vaB3Kmq7q6zba1pemXeg/ KzRyXEyc69L5xg48NKUzLUhprTIOD0O95m4IM= X-Received: by 2002:a05:7022:112:b0:128:ceac:6da6 with SMTP id a92af1059eb24-12bfb7602e8mr10822009c88.30.1775647903274; Wed, 08 Apr 2026 04:31:43 -0700 (PDT) Received: from MVIN00013.mvista.com ([43.249.234.209]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2d2cb09d6a6sm3053221eec.16.2026.04.08.04.31.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Apr 2026 04:31:42 -0700 (PDT) From: Hitendra Prajapati To: openembedded-core@lists.openembedded.org Cc: Hitendra Prajapati Subject: [kirkstone][PATCH] vim: Fix CVE-2026-28419 Date: Wed, 8 Apr 2026 17:01:35 +0530 Message-ID: <20260408113135.1030525-1-hprajapati@mvista.com> X-Mailer: git-send-email 2.50.1 MIME-Version: 1.0 List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Wed, 08 Apr 2026 11:31:46 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/234834 Pick patch from [1] also mentioned in [2] [1] https://github.com/vim/vim/commit/9b7dfa2948c9e1e5e32a5812812d580c7879f4a0 [2] https://nvd.nist.gov/vuln/detail/CVE-2026-28419 Signed-off-by: Hitendra Prajapati --- .../vim/files/CVE-2026-28419.patch | 86 +++++++++++++++++++ meta/recipes-support/vim/vim.inc | 1 + 2 files changed, 87 insertions(+) create mode 100644 meta/recipes-support/vim/files/CVE-2026-28419.patch diff --git a/meta/recipes-support/vim/files/CVE-2026-28419.patch b/meta/recipes-support/vim/files/CVE-2026-28419.patch new file mode 100644 index 0000000000..91100a7e91 --- /dev/null +++ b/meta/recipes-support/vim/files/CVE-2026-28419.patch @@ -0,0 +1,86 @@ +From 9b7dfa2948c9e1e5e32a5812812d580c7879f4a0 Mon Sep 17 00:00:00 2001 +From: Christian Brabandt +Date: Mon, 23 Feb 2026 19:35:25 +0000 +Subject: [PATCH] patch 9.2.0075: [security]: Buffer underflow with emacs tag + file + +Problem: When parsing a malformed Emacs-style tags file, a 1-byte + heap-buffer-underflow read occurs if the 0x7f delimiter + appears at the very beginning of a line. This happens + because the code attempts to scan backward for a tag + name from the delimiter without checking if space exists. + (ehdgks0627, un3xploitable) +Solution: Add a check to ensure the delimiter (p_7f) is not at the + start of the buffer (lbuf) before attempting to isolate + the tag name. + +GitHub Advisory: +https://github.com/vim/vim/security/advisories/GHSA-xcc8-r6c5-hvwv + +Signed-off-by: Christian Brabandt + + +CVE: CVE-2026-28419 +Upstream-Status: Backport [https://github.com/vim/vim/commit/9b7dfa2948c9e1e5e32a5812812d580c7879f4a0] +Signed-off-by: Hitendra Prajapati +--- + src/tag.c | 3 +++ + src/testdir/test_taglist.vim | 16 ++++++++++++++++ + src/version.c | 2 ++ + 3 files changed, 21 insertions(+) + +diff --git a/src/tag.c b/src/tag.c +index 45af67f20d..d3a73997bb 100644 +--- a/src/tag.c ++++ b/src/tag.c +@@ -2023,6 +2023,9 @@ etag_fail: + } + else // second format: isolate tagname + { ++ if (p_7f == lbuf) ++ goto etag_fail; ++ + // find end of tagname + for (p = p_7f - 1; !vim_iswordc(*p); --p) + if (p == lbuf) +diff --git a/src/testdir/test_taglist.vim b/src/testdir/test_taglist.vim +index 506e64f7ae..42ecc4b76e 100644 +--- a/src/testdir/test_taglist.vim ++++ b/src/testdir/test_taglist.vim +@@ -316,4 +316,20 @@ func Test_evil_emacs_tagfile() + set tags& + endfunc + ++" This used to crash Vim due to a heap-buffer-underflow ++func Test_emacs_tagfile_underflow() ++ CheckFeature emacs_tags ++ " The sequence from the crash artifact: ++ let lines = [ ++ \ "\x0c\xff\xffT\x19\x8a", ++ \ "\x19\x19\x0dtags\x19\x19\x19\x00\xff\xff\xff", ++ \ "\x7f3\x0c" ++ \ ] ++ call writefile(lines, 'Xtags', 'D') ++ set tags=Xtags ++ call assert_fails(':tag a', 'E431:') ++ ++ set tags& ++endfunc ++ + " vim: shiftwidth=2 sts=2 expandtab +diff --git a/src/version.c b/src/version.c +index 7d265ab641..4f47ec2688 100644 +--- a/src/version.c ++++ b/src/version.c +@@ -724,6 +724,8 @@ static char *(features[]) = + + static int included_patches[] = + { /* Add new patch number below this line */ ++/**/ ++ 1686, + /**/ + 1685, + /**/ +-- +2.50.1 + diff --git a/meta/recipes-support/vim/vim.inc b/meta/recipes-support/vim/vim.inc index 713e277936..b74c4a49c1 100644 --- a/meta/recipes-support/vim/vim.inc +++ b/meta/recipes-support/vim/vim.inc @@ -20,6 +20,7 @@ SRC_URI = "git://github.com/vim/vim.git;branch=master;protocol=https \ file://CVE-2026-25749.patch \ file://CVE-2026-26269.patch \ file://CVE-2026-28418.patch \ + file://CVE-2026-28419.patch \ " PV .= ".1683"