From patchwork Tue Aug 18 10:14:41 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vijay Anusuri X-Patchwork-Id: 95601 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 E0E6AC5DF7D for ; Tue, 18 Aug 2026 10:15:10 +0000 (UTC) Received: from mail-pj1-f48.google.com (mail-pj1-f48.google.com [209.85.216.48]) by mx.groups.io with SMTP id smtpd.msgproc02-g2.5592.1787048093119467832 for ; Tue, 18 Aug 2026 03:14:53 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=@mvista.com header.s=google header.b=KK5imeWn; spf=pass (domain: mvista.com, ip: 209.85.216.48, mailfrom: vanusuri@mvista.com) Received: by mail-pj1-f48.google.com with SMTP id 98e67ed59e1d1-3811f512167so6186071a91.3 for ; Tue, 18 Aug 2026 03:14:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mvista.com; s=google; t=1787048092; x=1787652892; 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:content-type; bh=07XOPx54l7s5Zlbw7c6mFsCK4qlvfbIGfMYowZ1qxuo=; b=KK5imeWnNhjwCY6bcwMl4mcVvYbeAgAhhUBS18lJ0v+rgjOyWLTy3jj2r3VZZgoNpe F+JdiAPoJWPuQHdA778YnzssndhXKh6FEYXkaC1j7DkRazHUpiwFkootMGeC/VM2+1IO CN+6ODPEjF+Wah47CC75LF4jGTJu19dIoX0eQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787048092; x=1787652892; 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:content-type; bh=07XOPx54l7s5Zlbw7c6mFsCK4qlvfbIGfMYowZ1qxuo=; b=NYx/QMi+ZDbHV4KW2TcjM/euERDPETcmKJ5kTHm1hh9RszEf4h5DFINqel93bWx9W+ RK1iuVFh2boVzra/GEUylWkfS5m+mIpnE6TVYYrAKjrYl4NyHnS8ODz5ety/drfTfBmr 5i9Qmr5zqY3mpqtQTLnW7qK9uiNlumoibelqD3zj8hdsUQYfdz4Q3J7nhPuWQJ/vB65u /AqvnoAU2scQuIsdvOcOwLGXvWvTKGUBTLtd6UvhqNvV1h/KPFubFfJtFm14KwIceFJl HwpPEB0daw72s+TeOjPzG+6sOAXy/tnbFNy6OBtJ3zRmYMX0gHWLQEznN+2FOZxkmAgQ m53Q== X-Gm-Message-State: AOJu0Ywq5dgK/dV6M+NuEvmvzTtptMfuyyesrh60BmfRVux7pLcA6vvs Ms7jI2rWceyKyS5hNsxmpg/5PXki/RAzK3ZqmsUvwlT1s9zTyL0F6SSnQley9mz6GspdL/FWeug OFmh1AEM= X-Gm-Gg: AR+sD10d3eCMFKJew78Shcx9lYQ4ze/aG15nnOdv9WaA/cXoPPSJSD3whUu6PlJy+Si pmdUYJZvFyqMBvLUaWyiltpratp8tGEiamjhciu7564jx1a+DH2emlGsfuR4OLbbER84nkJe/0M ksHU/Fm2SDhBcB4oA+vGmy7OpP2yxQ9zMCAaIPz7IGgdUCPV3R9XKn2HL19xpUE5oP1rtB+mA28 NpCZz/uNt+arCaYxzWGKgQtPpUvSKy1tYrRCY2N+0zX+Ia0Ma79ReiWXISTxmr4ad2x7QpJIsML XVka/IqrOc53x7HaTv13ukaZp76HT/9ef+UFBRmo0guZW7KkJyppOkz8oetumEh4fUAdz2bXkTl JXoAmLTm457QBES/zTI4LkuS/lgEhk+0Iwtzapia5uKg244p/O7dyaptgtsHvY7uZRCR3jFNxgd Ck/nypQgXh2v2XxL7uvbRrdl8AxGDcFugAgF/k6omslAGTGERHu13MR1kT5ATLevtQ6M0glTFqo enb X-Received: by 2002:a17:90b:4fc2:b0:38e:2524:724f with SMTP id 98e67ed59e1d1-3955a7b4d0emr8961785a91.12.1787048092476; Tue, 18 Aug 2026 03:14:52 -0700 (PDT) Received: from MVIN00352.mvista.com ([2401:4900:1f29:777d:ea96:6c89:c935:111e]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-326793c43b7sm15369074eec.7.2026.08.18.03.14.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Aug 2026 03:14:51 -0700 (PDT) From: Vijay Anusuri To: openembedded-devel@lists.openembedded.org Cc: Vijay Anusuri Subject: [oe][meta-oe][wrynose][patch] giflib: Fix CVE-2026-26740 Date: Tue, 18 Aug 2026 15:44:41 +0530 Message-ID: <20260818101442.1354019-1-vanusuri@mvista.com> X-Mailer: git-send-email 2.43.0 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 ; Tue, 18 Aug 2026 10:15:10 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-devel/message/129231 Pick patch according to [2] [1] https://nvd.nist.gov/vuln/detail/CVE-2026-26740 [2] https://ubuntu.com/security/CVE-2026-26740 Signed-off-by: Vijay Anusuri --- .../giflib/giflib/CVE-2026-26740.patch | 40 +++++++++++++++++++ .../recipes-devtools/giflib/giflib_6.1.2.bb | 1 + 2 files changed, 41 insertions(+) create mode 100644 meta-oe/recipes-devtools/giflib/giflib/CVE-2026-26740.patch diff --git a/meta-oe/recipes-devtools/giflib/giflib/CVE-2026-26740.patch b/meta-oe/recipes-devtools/giflib/giflib/CVE-2026-26740.patch new file mode 100644 index 0000000000..14ae97d23f --- /dev/null +++ b/meta-oe/recipes-devtools/giflib/giflib/CVE-2026-26740.patch @@ -0,0 +1,40 @@ +From 061605081115bbfd7019bafc119a13b6f17fcf25 Mon Sep 17 00:00:00 2001 +From: Anthony Hurtado +Date: Mon, 1 Jun 2026 15:40:48 -0500 +Subject: [PATCH] Fix CVE-2026-26740: heap OOB write in EGifGCBToSavedExtension + +EGifGCBToSavedExtension calls EGifGCBToExtension which unconditionally +writes 4 bytes into ep->Bytes without checking ep->ByteCount. If the +extension block was allocated with fewer than 4 bytes, this results in +a heap buffer overflow. + +The read-side counterpart DGifExtensionToGCB already validates that +GifExtensionLength == 4 before reading. Add the symmetric check on +the write side: return GIF_ERROR when ep->ByteCount < 4. + +Signed-off-by: Anthony Hurtado + +Upstream-Status: Backport [https://sourceforge.net/p/giflib/code/ci/061605081115bbfd7019bafc119a13b6f17fcf25] +CVE: CVE-2026-26740 +Signed-off-by: Vijay Anusuri +--- + egif_lib.c | 3 +++ + 1 file changed, 3 insertions(+) + +diff --git a/egif_lib.c b/egif_lib.c +index f1141a2..d74e8df 100644 +--- a/egif_lib.c ++++ b/egif_lib.c +@@ -690,6 +690,9 @@ int EGifGCBToSavedExtension(const GraphicsControlBlock *GCB, + ExtensionBlock *ep = + &GifFile->SavedImages[ImageIndex].ExtensionBlocks[i]; + if (ep->Function == GRAPHICS_EXT_FUNC_CODE) { ++ if (ep->ByteCount < 4) { ++ return GIF_ERROR; ++ } + EGifGCBToExtension(GCB, ep->Bytes); + return GIF_OK; + } +-- +2.43.0 + diff --git a/meta-oe/recipes-devtools/giflib/giflib_6.1.2.bb b/meta-oe/recipes-devtools/giflib/giflib_6.1.2.bb index 9cb2a51879..11f375ef27 100644 --- a/meta-oe/recipes-devtools/giflib/giflib_6.1.2.bb +++ b/meta-oe/recipes-devtools/giflib/giflib_6.1.2.bb @@ -9,6 +9,7 @@ DEPENDS = "xmlto-native" SRC_URI = "${SOURCEFORGE_MIRROR}/giflib/${BP}.tar.gz \ https://sourceforge.net/p/giflib/code/ci/d54b45b0240d455bbaedee4be5203d2703e59967/tree/doc/giflib-logo.gif?format=raw;subdir=${BP}/doc;name=logo;downloadfilename=giflib-logo.gif \ + file://CVE-2026-26740.patch \ " SRC_URI[logo.sha256sum] = "1a54383986adad1521d00e003b4c482c27e8bc60690be944a1f3319c75abc2c9"