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libgphoto2: patch CVE-2026-40334

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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>
This commit is contained in:
Gyorgy Sarvari
2026-04-20 08:27:42 +02:00
committed by Khem Raj
parent 754e02c668
commit ce3fa8ad2a
2 changed files with 38 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta-oe/recipes-graphics/gphoto2/libgphoto2/CVE-2026-40334.patch
+37
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@@ -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
+1
View File
@@ -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"