From: "Savva Mitrofanov" <savvamtr@gmail.com>
To: devel@edk2.groups.io
Cc: "Marvin Häuser" <mhaeuser@posteo.de>,
"Pedro Falcato" <pedro.falcato@gmail.com>,
"Vitaly Cheptsov" <vit9696@protonmail.com>
Subject: [edk2-platforms][PATCH v4 08/12] Ext4Pkg: Check VolumeName allocation correctness in Ext4GetVolumeName
Date: Thu, 2 Feb 2023 16:21:29 +0600 [thread overview]
Message-ID: <20230202102133.51606-9-savvamtr@gmail.com> (raw)
In-Reply-To: <20230202102133.51606-1-savvamtr@gmail.com>
Missing check in some cases leads to failed StrCpyS call in
Ext4GetVolumeLabelInfo. Also correct condition that checks Inode pointer
for being NULL in Ext4AllocateInode
Cc: Marvin Häuser <mhaeuser@posteo.de>
Cc: Pedro Falcato <pedro.falcato@gmail.com>
Cc: Vitaly Cheptsov <vit9696@protonmail.com>
Fixes: cfbbae595eec ("Ext4Pkg: Add handling of EFI_FILE_SYSTEM_VOLUME_LABEL GetInfo().")
Signed-off-by: Savva Mitrofanov <savvamtr@gmail.com>
Reviewed-by: Pedro Falcato <pedro.falcato@gmail.com>
Reviewed-by: Marvin Häuser <mhaeuser@posteo.de>
---
Features/Ext4Pkg/Ext4Dxe/File.c | 10 ++++++++--
Features/Ext4Pkg/Ext4Dxe/Inode.c | 2 +-
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/Features/Ext4Pkg/Ext4Dxe/File.c b/Features/Ext4Pkg/Ext4Dxe/File.c
index 9dde4a5d1a2d..677caf88fbdc 100644
--- a/Features/Ext4Pkg/Ext4Dxe/File.c
+++ b/Features/Ext4Pkg/Ext4Dxe/File.c
@@ -719,7 +719,11 @@ Ext4GetVolumeName (
VolNameLength = StrLen (VolumeName);
} else {
- VolumeName = AllocateZeroPool (sizeof (CHAR16));
+ VolumeName = AllocateZeroPool (sizeof (CHAR16));
+ if (VolumeName == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
VolNameLength = 0;
}
@@ -786,7 +790,9 @@ Ext4GetFilesystemInfo (
Info->VolumeSize = MultU64x32 (TotalBlocks, Part->BlockSize);
Info->FreeSpace = MultU64x32 (FreeBlocks, Part->BlockSize);
- StrCpyS (Info->VolumeLabel, VolNameLength + 1, VolumeName);
+ Status = StrCpyS (Info->VolumeLabel, VolNameLength + 1, VolumeName);
+
+ ASSERT_EFI_ERROR (Status);
FreePool (VolumeName);
diff --git a/Features/Ext4Pkg/Ext4Dxe/Inode.c b/Features/Ext4Pkg/Ext4Dxe/Inode.c
index e44b5638599f..90e3eb88f523 100644
--- a/Features/Ext4Pkg/Ext4Dxe/Inode.c
+++ b/Features/Ext4Pkg/Ext4Dxe/Inode.c
@@ -230,7 +230,7 @@ Ext4AllocateInode (
Inode = AllocateZeroPool (InodeSize);
- if (!Inode) {
+ if (Inode == NULL) {
return NULL;
}
--
2.39.1
next prev parent reply other threads:[~2023-02-02 10:21 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-02 10:21 [edk2-platforms][PATCH v4 00/12] Ext4Pkg: Code correctness and security improvements Savva Mitrofanov
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 01/12] Ext4Pkg: Fix memory leak in Ext4RetrieveDirent Savva Mitrofanov
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 02/12] Ext4Pkg: Fix incorrect checksum metadata feature check Savva Mitrofanov
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 03/12] Ext4Pkg: Fix division by zero by adding check for s_inodes_per_group Savva Mitrofanov
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 04/12] Ext4Pkg: Add inode number validity check Savva Mitrofanov
2023-02-02 10:32 ` Marvin Häuser
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 05/12] Ext4Pkg: Fix shift out of bounds in Ext4OpenSuperblock Savva Mitrofanov
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 06/12] Ext4Pkg: Corrects integer overflow check logic in DiskUtil Savva Mitrofanov
2023-02-02 10:31 ` Marvin Häuser
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 07/12] Ext4Pkg: Check that source file is directory in Ext4OpenInternal Savva Mitrofanov
2023-02-02 10:21 ` Savva Mitrofanov [this message]
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 09/12] Ext4Pkg: Add missing exit Status in Ext4OpenDirent Savva Mitrofanov
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 10/12] Ext4Pkg: Fixes build on MSVC Savva Mitrofanov
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 11/12] Ext4Pkg: Filter out directory entry names containing \0 as invalid Savva Mitrofanov
2023-02-02 10:30 ` Marvin Häuser
2023-02-02 10:21 ` [edk2-platforms][PATCH v4 12/12] Ext4Pkg: Corrects memory leak in Ext4ReadSlowSymlink Savva Mitrofanov
2023-02-02 10:29 ` Marvin Häuser
2023-02-08 16:32 ` [edk2-platforms][PATCH v4 00/12] Ext4Pkg: Code correctness and security improvements Pedro Falcato
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