In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on i_xattr_nid in sanity_check_inode()
syzbot reports a kernel bug as below:
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
==================================================================
BUG: KASAN: slab-out-of-bounds in f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline]
BUG: KASAN: slab-out-of-bounds in current_nat_addr fs/f2fs/node.h:213 [inline]
BUG: KASAN: slab-out-of-bounds in f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600
Read of size 1 at addr ffff88807a58c76c by task syz-executor280/5076
CPU: 1 PID: 5076 Comm: syz-executor280 Not tainted 6.9.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
kasan_report+0x143/0x180 mm/kasan/report.c:601
f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline]
current_nat_addr fs/f2fs/node.h:213 [inline]
f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600
f2fs_xattr_fiemap fs/f2fs/data.c:1848 [inline]
f2fs_fiemap+0x55d/0x1ee0 fs/f2fs/data.c:1925
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x1c07/0x2e50 fs/ioctl.c:838
__do_sys_ioctl fs/ioctl.c:902 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:890
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The root cause is we missed to do sanity check on i_xattr_nid during
f2fs_iget(), so that in fiemap() path, current_nat_addr() will access
nat_bitmap w/ offset from invalid i_xattr_nid, result in triggering
kasan bug report, fix it.
References
Configurations
Configuration 1 (hide)
|
History
17 Sep 2025, 16:07
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.1 |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CWE | CWE-125 | |
| References | () https://git.kernel.org/stable/c/1640dcf383cdba52be8b28d2a1a2aa7ef7a30c98 - Patch | |
| References | () https://git.kernel.org/stable/c/20faaf30e55522bba2b56d9c46689233205d7717 - Patch | |
| References | () https://git.kernel.org/stable/c/68e3cd4ecb8603936cccdc338929130045df2e57 - Patch | |
| References | () https://git.kernel.org/stable/c/75c87e2ac6149abf44bdde0dd6d541763ddb0dff - Patch | |
| References | () https://git.kernel.org/stable/c/8c8aa473fe6eb46a4bf99f3ea2dbe52bf0c1a1f0 - Patch | |
| References | () https://git.kernel.org/stable/c/be0155202e431f3007778568a72432c68f8946ba - Patch | |
| References | () https://git.kernel.org/stable/c/c559a8d840562fbfce9f318448dda2f7d3e6d8e8 - Patch |
21 Nov 2024, 09:27
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/1640dcf383cdba52be8b28d2a1a2aa7ef7a30c98 - | |
| References | () https://git.kernel.org/stable/c/20faaf30e55522bba2b56d9c46689233205d7717 - | |
| References | () https://git.kernel.org/stable/c/68e3cd4ecb8603936cccdc338929130045df2e57 - | |
| References | () https://git.kernel.org/stable/c/75c87e2ac6149abf44bdde0dd6d541763ddb0dff - | |
| References | () https://git.kernel.org/stable/c/8c8aa473fe6eb46a4bf99f3ea2dbe52bf0c1a1f0 - | |
| References | () https://git.kernel.org/stable/c/be0155202e431f3007778568a72432c68f8946ba - | |
| References | () https://git.kernel.org/stable/c/c559a8d840562fbfce9f318448dda2f7d3e6d8e8 - | |
| Summary |
|
25 Jun 2024, 15:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-06-25 15:15
Updated : 2025-09-17 16:07
NVD link : CVE-2024-39467
Mitre link : CVE-2024-39467
CVE.ORG link : CVE-2024-39467
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-125
Out-of-bounds Read