GNU bug report logs - #53335
[PATCH] gnu: expat: Add replacement for [security fixes].

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From: Tobias Geerinckx-Rice <me <at> tobias.gr>
To: 53335 <at> debbugs.gnu.org
Subject: [bug#53335] [PATCH] gnu: expat: Add replacement for [security fixes].
Date: Sun, 16 Jan 2022 01:00:04 +0100

Fixes CVE-2021-45960, CVE-2021-46143, and CVE-2022-22822…22827.

* gnu/packages/xml.scm (expat/fixed): New variable.
(expat)[replacement]: Use it.
---
 gnu/packages/xml.scm | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/gnu/packages/xml.scm b/gnu/packages/xml.scm
index b89115a051..771c577618 100644
--- a/gnu/packages/xml.scm
+++ b/gnu/packages/xml.scm
@@ -119,6 +119,7 @@ (define-public expat
   (package
     (name "expat")
     (version "2.4.1")
+    (replacement expat/fixed)
     (source (let ((dot->underscore (lambda (c) (if (char=? #\. c) #\_ c))))
               (origin
                 (method url-fetch)
@@ -154,6 +155,23 @@ (define-public expat
 things the parser might find in the XML document (like start tags).")
     (license license:expat)))
 
+(define expat/fixed
+  (package
+    (inherit expat)
+    (version "2.4.3")
+    (source (let ((dot->underscore (lambda (c) (if (char=? #\. c) #\_ c))))
+              (origin
+                (method url-fetch)
+                (uri (list (string-append "mirror://sourceforge/expat/expat/"
+                                          version "/expat-" version ".tar.xz")
+                           (string-append
+                            "https://github.com/libexpat/libexpat/releases/download/R_"
+                            (string-map dot->underscore version)
+                            "/expat-" version ".tar.xz")))
+                (sha256
+                 (base32
+                  "12kp4h40cpyqqpjqaldag0xq4ig1ljzpkzy9i2marc7blnqz3ydi")))))))
+
 (define-public libebml
   (package
     (name "libebml")
-- 
2.34.0

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