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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
git.kernel.org/linus/20faaf30e55522bba2b56d9c46689233205d7717 (6.10-rc1)
git.kernel.org/stable/c/1640dcf383cdba52be8b28d2a1a2aa7ef7a30c98
git.kernel.org/stable/c/20faaf30e55522bba2b56d9c46689233205d7717
git.kernel.org/stable/c/68e3cd4ecb8603936cccdc338929130045df2e57
git.kernel.org/stable/c/75c87e2ac6149abf44bdde0dd6d541763ddb0dff
git.kernel.org/stable/c/8c8aa473fe6eb46a4bf99f3ea2dbe52bf0c1a1f0
git.kernel.org/stable/c/be0155202e431f3007778568a72432c68f8946ba
git.kernel.org/stable/c/c559a8d840562fbfce9f318448dda2f7d3e6d8e8
launchpad.net/bugs/cve/CVE-2024-39467
nvd.nist.gov/vuln/detail/CVE-2024-39467
security-tracker.debian.org/tracker/CVE-2024-39467
www.cve.org/CVERecord?id=CVE-2024-39467