rsync: fix CVE-2025-10158

CVE-2025-10158:
A malicious client acting as the receiver of an rsync file transfer can trigger an out of bounds read of a heap based buffer, via a negative array index. The malicious rsync client requires at least read access to the remote rsync module in order to trigger the issue.

Reference:
[https://nvd.nist.gov/vuln/detail/CVE-2025-10158]

Upstream patch:
[797e17fc4a]

(From OE-Core rev: fe4bea86b27551edbe7440ff47041b6d45b2f4e1)

Signed-off-by: Liyin Zhang <liyin.zhang.cn@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-devtools/rsync/files/CVE-2025-10158.patch

@@ -0,0 +1,36 @@
+From a8fabf850c3c5164520c307199e9abc5ded45e4c Mon Sep 17 00:00:00 2001
+From: Andrew Tridgell <andrew@tridgell.net>
+Date: Sat, 23 Aug 2025 17:26:53 +1000
+Subject: [PATCH] fixed an invalid access to files array
+
+this was found by Calum Hutton from Rapid7. It is a real bug, but
+analysis shows it can't be leverged into an exploit. Worth fixing
+though.
+
+Many thanks to Calum and Rapid7 for finding and reporting this
+
+CVE: CVE-2025-10158
+
+Upstream-Status: Backport [https://github.com/RsyncProject/rsync/commit/797e17fc4a6f15e3b1756538a9f812b63942686f]
+
+Signed-off-by: Liyin Zhang <liyin.zhang.cn@windriver.com>
+---
+ sender.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/sender.c b/sender.c
+index a4d46c39..b1588b70 100644
+--- a/sender.c
++++ b/sender.c
+@@ -262,6 +262,8 @@ void send_files(int f_in, int f_out)
+ 
+ 		if (ndx - cur_flist->ndx_start >= 0)
+ 			file = cur_flist->files[ndx - cur_flist->ndx_start];
++		else if (cur_flist->parent_ndx < 0)
++			exit_cleanup(RERR_PROTOCOL);
+ 		else
+ 			file = dir_flist->files[cur_flist->parent_ndx];
+ 		if (F_PATHNAME(file)) {
+-- 
+2.35.5
+

meta/recipes-devtools/rsync/rsync_3.2.7.bb

@@ -27,6 +27,7 @@ SRC_URI = "https://download.samba.org/pub/${BPN}/src/${BP}.tar.gz \
            file://CVE-2024-12087-0003.patch \
            file://CVE-2024-12088.patch \
            file://CVE-2024-12747.patch \
+           file://CVE-2025-10158.patch \
            "
 
 SRC_URI[sha256sum] = "4e7d9d3f6ed10878c58c5fb724a67dacf4b6aac7340b13e488fb2dc41346f2bb"