libarchive: fix CVE-2025-5914

A vulnerability has been identified in the libarchive library, specifically within the archiv
e_read_format_rar_seek_data() function. This flaw involves an integer overflow that can ultim
ately lead to a double-free condition. Exploiting a double-free vulnerability can result in m
emory corruption, enabling an attacker to execute arbitrary code or cause a denial-of-service
condition.

Reference:
https://nvd.nist.gov/vuln/detail/CVE-2025-5914

Upstream-patch:
https://github.com/libarchive/libarchive/commit/09685126fcec664e2b8ca595e1fc371bd494d209

Signed-off-by: Divya Chellam <divya.chellam@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

diff --git a/meta/recipes-extended/libarchive/libarchive/CVE-2025-5914.patch b/meta/recipes-extended/libarchive/libarchive/CVE-2025-5914.patch
new file mode 100644 (file)
index 0000000..89022b3
--- /dev/null
+++ b/meta/recipes-extended/libarchive/libarchive/CVE-2025-5914.patch
@@ -0,0 +1,48 @@
+From 09685126fcec664e2b8ca595e1fc371bd494d209 Mon Sep 17 00:00:00 2001
+From: Tobias Stoeckmann <stoeckmann@users.noreply.github.com>
+Date: Sun, 11 May 2025 02:17:19 +0200
+Subject: [PATCH] rar: Fix double free with over 4 billion nodes (#2598)
+
+If a system is capable of handling 4 billion nodes in memory, a double
+free could occur because of an unsigned integer overflow leading to a
+realloc call with size argument of 0. Eventually, the client will
+release that memory again, triggering a double free.
+
+Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
+
+CVE: CVE-2025-5914
+
+Upstream-Status: Backport [https://github.com/libarchive/libarchive/commit/09685126fcec664e2b8ca595e1fc371bd494d209]
+
+Signed-off-by: Divya Chellam <divya.chellam@windriver.com>
+---
+ libarchive/archive_read_support_format_rar.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/libarchive/archive_read_support_format_rar.c b/libarchive/archive_read_support_format_rar.c
+index 9d155c6..9eb3c84 100644
+--- a/libarchive/archive_read_support_format_rar.c
++++ b/libarchive/archive_read_support_format_rar.c
+@@ -335,8 +335,8 @@ struct rar
+   int found_first_header;
+   char has_endarc_header;
+   struct data_block_offsets *dbo;
+-  unsigned int cursor;
+-  unsigned int nodes;
++  size_t cursor;
++  size_t nodes;
+   char filename_must_match;
+ 
+   /* LZSS members */
+@@ -1186,7 +1186,7 @@ archive_read_format_rar_seek_data(struct archive_read *a, int64_t offset,
+     int whence)
+ {
+   int64_t client_offset, ret;
+-  unsigned int i;
++  size_t i;
+   struct rar *rar = (struct rar *)(a->format->data);
+ 
+   if (rar->compression_method == COMPRESS_METHOD_STORE)
+-- 
+2.40.0
+

diff --git a/meta/recipes-extended/libarchive/libarchive_3.7.9.bb b/meta/recipes-extended/libarchive/libarchive_3.7.9.bb
index 4dd6794bb172ec1a231550bbd4e2eeca95ef8a2c..c26a14e32e3985de323e7c2e9cf26f56de29b90e 100644 (file)
--- a/meta/recipes-extended/libarchive/libarchive_3.7.9.bb
+++ b/meta/recipes-extended/libarchive/libarchive_3.7.9.bb
@@ -31,6 +31,7 @@ EXTRA_OECONF += "--enable-largefile --without-iconv"
 
 SRC_URI = "http://libarchive.org/downloads/libarchive-${PV}.tar.gz \
            file://configurehack.patch \
+           file://CVE-2025-5914.patch \
            "
 UPSTREAM_CHECK_URI = "http://libarchive.org/"