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libgphoto2: patch CVE-2026-40338

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Details: https://nvd.nist.gov/vuln/detail/CVE-2026-40338

Backport the patch 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 08:27:45 +02:00
committed by Khem Raj
parent 078f26b084
commit f22e17508e
2 changed files with 35 additions and 0 deletions
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34
meta-oe/recipes-graphics/gphoto2/libgphoto2/CVE-2026-40338.patch Normal file
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@@ -0,0 +1,34 @@
From 43cc20e807cd2935869617a7d8b9488070712c0e Mon Sep 17 00:00:00 2001
From: Marcus Meissner <marcus@jet.franken.de>
Date: Sat, 11 Apr 2026 10:47:52 +0200
Subject: [PATCH] =?UTF-8?q?Fixed=20Sony=20DPD=20Enum=20Count=20OOB=20Read?=
=?UTF-8?q?=20(CWE-125)=20=E2=80=94=20MEDIUM?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
In the PTP_DPFF_Enumeration case of ptp_unpack_Sony_DPD(), dtoh16o(data, *poffset) reads 2 bytes for enumeration count N without verifying 2 bytes remain. The standard parser at line 704 has this check.
CVE-2026-40338
Reported-By: Sebastián Alba <sebasjosue84@gmail.com>
CVE: CVE-2026-40338
Upstream-Status: Backport [https://github.com/gphoto/libgphoto2/commit/3b9f9696be76ae51dca983d9dd8ce586a2561845]
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 fc51d77..f90d2a5 100644
--- a/camlibs/ptp2/ptp-pack.c
+++ b/camlibs/ptp2/ptp-pack.c
@@ -851,6 +851,7 @@ ptp_unpack_Sony_DPD (PTPParams *params, const unsigned char* data, PTPDeviceProp
break;
case PTP_DPFF_Enumeration: {
#define N dpd->FORM.Enum.NumberOfValues
+ if (*poffset + sizeof(uint16_t) > dpdlen) goto outofmemory;
N = dtoh16o(data, *poffset);
dpd->FORM.Enum.SupportedValue = calloc(N,sizeof(dpd->FORM.Enum.SupportedValue[0]));
if (!dpd->FORM.Enum.SupportedValue)

1
meta-oe/recipes-graphics/gphoto2/libgphoto2_2.5.33.bb
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@@ -17,6 +17,7 @@ SRC_URI = "${SOURCEFORGE_MIRROR}/gphoto/${BP}.tar.xz;name=libgphoto2 \
file://CVE-2026-40334.patch \
file://CVE-2026-40335.patch \
file://CVE-2026-40336.patch \
file://CVE-2026-40338.patch \
"
SRC_URI[libgphoto2.sha256sum] = "28825f767a85544cb58f6e15028f8e53a5bb37a62148b3f1708b524781c3bef2"