From: Siddharth Doshi <[email protected]> Picking patch as per [1], and same patch is mentioned in [2]
References: [1] https://nvd.nist.gov/vuln/detail/CVE-2026-86137 [2] https://security-tracker.debian.org/tracker/CVE-2026-86137 Signed-off-by: Siddharth Doshi <[email protected]> --- .../libxml/libxml2/CVE-2026-86137.patch | 48 +++++++++++++++++++ meta/recipes-core/libxml/libxml2_2.12.10.bb | 1 + 2 files changed, 49 insertions(+) create mode 100644 meta/recipes-core/libxml/libxml2/CVE-2026-86137.patch diff --git a/meta/recipes-core/libxml/libxml2/CVE-2026-86137.patch b/meta/recipes-core/libxml/libxml2/CVE-2026-86137.patch new file mode 100644 index 0000000000..e8ccd93142 --- /dev/null +++ b/meta/recipes-core/libxml/libxml2/CVE-2026-86137.patch @@ -0,0 +1,48 @@ +From 76fe08d97de88bfaef2f7d5cd27f11954cc5bee2 Mon Sep 17 00:00:00 2001 +From: Hieu Le Minh <[email protected]> +Date: Sat, 18 Apr 2026 21:18:24 +0700 +Subject: [PATCH] xmlregexp: Prevent out-of-bounds read in NXT macro + +Fixes: https://gitlab.gnome.org/GNOME/libxml2/-/issues/1099 + +Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/76fe08d97de88bfaef2f7d5cd27f11954cc5bee2] +CVE: CVE-2026-86137 +Signed-off-by: Siddharth Doshi <[email protected]> +--- + xmlregexp.c | 6 +++++- + 1 file changed, 5 insertions(+), 1 deletion(-) + +diff --git a/xmlregexp.c b/xmlregexp.c +index f434a0c..5e15311 100644 +--- a/xmlregexp.c ++++ b/xmlregexp.c +@@ -56,7 +56,9 @@ + xmlRegexpErrCompile(ctxt, str); + #define NEXT ctxt->cur++ + #define CUR (*(ctxt->cur)) +-#define NXT(index) (ctxt->cur[index]) ++#define NXT(index) \ ++ (((size_t)(ctxt->cur + index - ctxt->string) < ctxt->len) \ ++ ? ctxt->cur[index] : 0) + + #define NEXTL(l) ctxt->cur += l; + #define XML_REG_STRING_SEPARATOR '|' +@@ -245,6 +247,7 @@ typedef xmlRegParserCtxt *xmlRegParserCtxtPtr; + struct _xmlAutomata { + xmlChar *string; + xmlChar *cur; ++ size_t len; + + int error; + int neg; +@@ -700,6 +703,7 @@ xmlRegNewParserCtxt(const xmlChar *string) { + memset(ret, 0, sizeof(xmlRegParserCtxt)); + if (string != NULL) + ret->string = xmlStrdup(string); ++ ret->len = strlen((const char *) ret->string); + ret->cur = ret->string; + ret->neg = 0; + ret->negs = 0; +-- +2.34.1 + diff --git a/meta/recipes-core/libxml/libxml2_2.12.10.bb b/meta/recipes-core/libxml/libxml2_2.12.10.bb index d476ba14b6..e4db345af4 100644 --- a/meta/recipes-core/libxml/libxml2_2.12.10.bb +++ b/meta/recipes-core/libxml/libxml2_2.12.10.bb @@ -32,6 +32,7 @@ SRC_URI += "http://www.w3.org/XML/Test/xmlts20130923.tar;subdir=${BP};name=testt file://CVE-2026-0992-03.patch \ file://CVE-2026-1757.patch \ file://CVE-2026-11979.patch \ + file://CVE-2026-86137.patch \ " SRC_URI[archive.sha256sum] = "c3d8c0c34aa39098f66576fe51969db12a5100b956233dc56506f7a8679be995" -- 2.34.1
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