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 v1 12/12] Ext4Pkg: Add missing exit Status in Ext4OpenDirent
Date: Fri, 9 Dec 2022 22:11:04 +0600 [thread overview]
Message-ID: <20221209161104.70220-13-savvamtr@gmail.com> (raw)
In-Reply-To: <20221209161104.70220-1-savvamtr@gmail.com>
Missing EFI_OUT_OF_RESOURCES exit status on failed Ext4CreateDentry
leads to NULL-pointer dereference in Ext4GetFileInfo (passing NULL
buffer in Ext4ReadDir)
Cc: Marvin Häuser <mhaeuser@posteo.de>
Cc: Pedro Falcato <pedro.falcato@gmail.com>
Cc: Vitaly Cheptsov <vit9696@protonmail.com>
Signed-off-by: Savva Mitrofanov <savvamtr@gmail.com>
---
Features/Ext4Pkg/Ext4Dxe/Directory.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/Features/Ext4Pkg/Ext4Dxe/Directory.c b/Features/Ext4Pkg/Ext4Dxe/Directory.c
index ff476c8641e8..efdce1477246 100644
--- a/Features/Ext4Pkg/Ext4Dxe/Directory.c
+++ b/Features/Ext4Pkg/Ext4Dxe/Directory.c
@@ -260,7 +260,8 @@ Ext4OpenDirent (
} else {
File->Dentry = Ext4CreateDentry (FileName, Directory->Dentry);
- if (!File->Dentry) {
+ if (File->Dentry == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
}
--
2.38.1
next prev parent reply other threads:[~2022-12-09 16:11 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-09 16:10 [edk2-platforms][PATCH v1 00/12] Ext4Pkg: Code correctness and security improvements Savva Mitrofanov
2022-12-09 16:10 ` [edk2-platforms][PATCH v1 01/12] Ext4Pkg: Fix memory leak in Ext4RetrieveDirent Savva Mitrofanov
2022-12-09 16:10 ` [edk2-platforms][PATCH v1 02/12] Ext4Pkg: Move EXT4_NAME_MAX definition to Ext4Disk.h Savva Mitrofanov
2022-12-09 16:10 ` [edk2-platforms][PATCH v1 03/12] Ext4Pkg: Fix global buffer overflow in Ext4ReadDir Savva Mitrofanov
2022-12-09 16:10 ` [edk2-platforms][PATCH v1 04/12] Ext4Pkg: Fix incorrect checksum metadata feature check Savva Mitrofanov
2022-12-09 16:10 ` [edk2-platforms][PATCH v1 05/12] Ext4Pkg: Fix division by zero by adding check for s_inodes_per_group Savva Mitrofanov
2022-12-09 16:10 ` [edk2-platforms][PATCH v1 06/12] Ext4Pkg: Add comparison between Position and FileSize in Ext4SetPosition Savva Mitrofanov
2022-12-09 22:12 ` Pedro Falcato
2022-12-12 11:44 ` Savva Mitrofanov
2022-12-09 16:10 ` [edk2-platforms][PATCH v1 07/12] Ext4Pkg: Add inode number validity check Savva Mitrofanov
2022-12-09 16:11 ` [edk2-platforms][PATCH v1 08/12] Ext4Pkg: Fix shift out of bounds in Ext4OpenSuperblock Savva Mitrofanov
2022-12-09 16:11 ` [edk2-platforms][PATCH v1 09/12] Ext4Pkg: Correct integer overflow check on multiplication in DiskUtil Savva Mitrofanov
2022-12-09 22:16 ` Pedro Falcato
2022-12-09 16:11 ` [edk2-platforms][PATCH v1 10/12] Ext4Pkg: Check that source file is directory in Ext4OpenInternal Savva Mitrofanov
2022-12-09 16:11 ` [edk2-platforms][PATCH v1 11/12] Ext4Pkg: Check VolumeName allocation correctness in Ext4GetVolumeName Savva Mitrofanov
2022-12-09 16:11 ` Savva Mitrofanov [this message]
2022-12-09 22:28 ` [edk2-platforms][PATCH v1 00/12] Ext4Pkg: Code correctness and security improvements Pedro Falcato
2022-12-12 14:40 ` Savva Mitrofanov
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