cbcvebase.
CVE-2024-56692
published 2024-12-28

CVE-2024-56692: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node blkaddr in truncate_node() syzbot reports a f2fs bug…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
12.1th percentile
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node blkaddr in truncate_node() syzbot reports a f2fs bug as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/segment.c:2534! RIP: 0010:f2fs_invalidate_blocks+0x35f/0x370 fs/f2fs/segment.c:2534 Call Trace: truncate_node+0x1ae/0x8c0 fs/f2fs/node.c:909 f2fs_remove_inode_page+0x5c2/0x870 fs/f2fs/node.c:1288 f2fs_evict_inode+0x879/0x15c0 fs/f2fs/inode.c:856 evict+0x4e8/0x9b0 fs/inode.c:723 f2fs_handle_failed_inode+0x271/0x2e0 fs/f2fs/inode.c:986 f2fs_create+0x357/0x530 fs/f2fs/namei.c:394 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x1c03/0x3590 fs/namei.c:3930 do_filp_open+0x235/0x490 fs/namei.c:3960 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0010:f2fs_invalidate_blocks+0x35f/0x370 fs/f2fs/segment.c:2534 The root cause is: on a fuzzed image, blkaddr in nat entry may be corrupted, then it will cause system panic when using it in f2fs_invalidate_blocks(), to avoid this, let's add sanity check on nat blkaddr in truncate_node().

Affected

18 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.12.3-1 (forky)linux 6.12.3-1 (forky)
linuxlinux
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 27d6e7eff07f8cce8e83b162d8f21a07458c860d27d6e7eff07f8cce8e83b162d8f21a07458c860d
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < c1077078ce4589b5e5387f6b0aaa0d4534b9eb57c1077078ce4589b5e5387f6b0aaa0d4534b9eb57
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 0a5c8b3fbf6200f1c66062d307c9a520849177880a5c8b3fbf6200f1c66062d307c9a52084917788
linuxlinux>= 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 < 6babe00ccd34fc65b78ef8b99754e32b4385f23d6babe00ccd34fc65b78ef8b99754e32b4385f23d
linuxlinux_kernel< 6.6.646.6.64
linuxlinux_kernel>= 0 < 6.12.3-16.12.3-1
linuxlinux_kernel>= 0 < 6.12.3-16.12.3-1
linuxlinux_kernel>= 0 < 6.8.0-58.606.8.0-58.60
linuxlinux_kernel>= 0 < 6.11.0-18.186.11.0-18.18
linuxlinux_kernel>= 6.12 < 6.12.26.12.2
linuxlinux_kernel>= 6.7 < 6.11.116.11.11
msrcazl3_kernel_6.6.57.1-7_on_azure_linux_3.0
msrcazl3_kernel_6.6.64.2-1_on_azure_linux_3.0
msrccbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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