tar: fix CVE-2022-48303

srcpkgs/tar/patches/cve-2022-48303.patch

@@ -0,0 +1,31 @@
+From 3da78400eafcccb97e2f2fd4b227ea40d794ede8 Mon Sep 17 00:00:00 2001
+From: Sergey Poznyakoff <gray@gnu.org>
+Date: Sat, 11 Feb 2023 11:57:39 +0200
+Subject: Fix boundary checking in base-256 decoder
+
+* src/list.c (from_header): Base-256 encoding is at least 2 bytes
+long.
+---
+ src/list.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+ https://savannah.gnu.org/bugs/?62387
+
+diff --git a/src/list.c b/src/list.c
+index 9fafc42..86bcfdd 100644
+--- a/src/list.c
++++ b/src/list.c
+@@ -881,8 +881,9 @@ from_header (char const *where0, size_t digs, char const *type,
+ 	  where++;
+ 	}
+     }
+-  else if (*where == '\200' /* positive base-256 */
+-	   || *where == '\377' /* negative base-256 */)
++  else if (where <= lim - 2
++	   && (*where == '\200' /* positive base-256 */
++	       || *where == '\377' /* negative base-256 */))
+     {
+       /* Parse base-256 output.  A nonnegative number N is
+ 	 represented as (256**DIGS)/2 + N; a negative number -N is
+-- 
+cgit v1.1
+

srcpkgs/tar/template

@@ -1,7 +1,7 @@
 # Template file for 'tar'
 pkgname=tar
 version=1.34
-revision=2
+revision=3
 build_style=gnu-configure
 configure_args="gl_cv_struct_dirent_d_ino=yes"
 makedepends="acl-devel"