libgphoto2: patch CVE-2026-40334

Details: https://nvd.nist.gov/vuln/detail/CVE-2026-40334

Backport the patch that is referenced by the NVD advisory.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-oe/recipes-graphics/gphoto2/libgphoto2/CVE-2026-40334.patch

@@ -0,0 +1,37 @@
+From 20b33a26b2efdbf2c35c5cacc54a041855ec764b Mon Sep 17 00:00:00 2001
+From: Marcus Meissner <marcus@jet.franken.de>
+Date: Wed, 8 Apr 2026 15:15:54 +0200
+Subject: [PATCH] Fixed Canon FolderEntry Missing Null Termination
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+ptp_unpack_Canon_FE() copies filename with strncpy into a 13-byte
+buffer without explicit null termination. The EOS variant at line
+1451–1452 correctly adds fe->Filename[PTP_CANON_FilenameBufferLen-1]
+= 0; confirming this was recognized as necessary but not applied to the
+original Canon path.
+
+ CVE-2026-40334
+
+Reported-By: Sebastián Alba <sebasjosue84@gmail.com>
+
+CVE: CVE-2026-40334
+Upstream-Status: Backport [https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873]
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ camlibs/ptp2/ptp-pack.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/camlibs/ptp2/ptp-pack.c b/camlibs/ptp2/ptp-pack.c
+index 09dcc24..982b4f4 100644
+--- a/camlibs/ptp2/ptp-pack.c
++++ b/camlibs/ptp2/ptp-pack.c
+@@ -1369,6 +1369,7 @@ ptp_unpack_Canon_FE (PTPParams *params, const unsigned char* data, PTPCANONFolde
+ 	fe->ObjectSize       = dtoh32a(data + PTP_cfe_ObjectSize);
+ 	fe->Time     = (time_t)dtoh32a(data + PTP_cfe_Time);
+ 	strncpy(fe->Filename, (char*)data + PTP_cfe_Filename, PTP_CANON_FilenameBufferLen);
++	fe->Filename[PTP_CANON_FilenameBufferLen-1] = '\0';
+ }
+ 
+ /*

meta-oe/recipes-graphics/gphoto2/libgphoto2_2.5.33.bb

@@ -14,6 +14,7 @@ SRC_URI = "${SOURCEFORGE_MIRROR}/gphoto/${BP}.tar.xz;name=libgphoto2 \
            file://0001-configure-Filter-out-buildpaths-from-CC.patch \
            file://0001-libgphoto2-fix-const-correctness-for-c23-builds.patch \
            file://CVE-2026-40333.patch \
+           file://CVE-2026-40334.patch \
            "
 SRC_URI[libgphoto2.sha256sum] = "28825f767a85544cb58f6e15028f8e53a5bb37a62148b3f1708b524781c3bef2"