cbcvebase.
CVE-2024-39467
published 2024-06-25

CVE-2024-39467: 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…

PriorityP430high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
EPSS
0.24%
15.0th percentile
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: __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.

Affected

22 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.94-1 (bookworm)linux 6.1.94-1 (bookworm)
linuxlinux
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < c559a8d840562fbfce9f318448dda2f7d3e6d8e8c559a8d840562fbfce9f318448dda2f7d3e6d8e8
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 75c87e2ac6149abf44bdde0dd6d541763ddb0dff75c87e2ac6149abf44bdde0dd6d541763ddb0dff
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 1640dcf383cdba52be8b28d2a1a2aa7ef7a30c981640dcf383cdba52be8b28d2a1a2aa7ef7a30c98
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 8c8aa473fe6eb46a4bf99f3ea2dbe52bf0c1a1f08c8aa473fe6eb46a4bf99f3ea2dbe52bf0c1a1f0
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < be0155202e431f3007778568a72432c68f8946babe0155202e431f3007778568a72432c68f8946ba
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 68e3cd4ecb8603936cccdc338929130045df2e5768e3cd4ecb8603936cccdc338929130045df2e57
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 20faaf30e55522bba2b56d9c46689233205d771720faaf30e55522bba2b56d9c46689233205d7717
linuxlinux_kernel>= 0 < 5.10.221-15.10.221-1
linuxlinux_kernel>= 0 < 6.1.94-16.1.94-1
linuxlinux_kernel>= 0 < 6.9.7-16.9.7-1
linuxlinux_kernel>= 0 < 6.9.7-16.9.7-1
linuxlinux_kernel>= 0 < 5.4.0-192.2125.4.0-192.212
linuxlinux_kernel>= 0 < 5.15.0-121.1315.15.0-121.131
linuxlinux_kernel>= 0 < 6.8.0-44.446.8.0-44.44
linuxlinux_kernel>= 3.8 < 5.4.2785.4.278
linuxlinux_kernel>= 5.11 < 5.15.1615.15.161
linuxlinux_kernel>= 5.16 < 6.1.946.1.94
linuxlinux_kernel>= 5.5 < 5.10.2195.10.219
linuxlinux_kernel>= 6.2 < 6.6.346.6.34
linuxlinux_kernel>= 6.7 < 6.9.56.9.5

CVSS provenance

nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian7.1HIGH
vendor_redhat7.1HIGH
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