cbcvebase.
CVE-2025-38163
published 2025-07-03

CVE-2025-38163: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on sbi->total_valid_block_count syzbot reported a f2fs bug as…

medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on sbi->total_valid_block_count syzbot reported a f2fs bug as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/f2fs.h:2521! RIP: 0010:dec_valid_block_count+0x3b2/0x3c0 fs/f2fs/f2fs.h:2521 Call Trace: f2fs_truncate_data_blocks_range+0xc8c/0x11a0 fs/f2fs/file.c:695 truncate_dnode+0x417/0x740 fs/f2fs/node.c:973 truncate_nodes+0x3ec/0xf50 fs/f2fs/node.c:1014 f2fs_truncate_inode_blocks+0x8e3/0x1370 fs/f2fs/node.c:1197 f2fs_do_truncate_blocks+0x840/0x12b0 fs/f2fs/file.c:810 f2fs_truncate_blocks+0x10d/0x300 fs/f2fs/file.c:838 f2fs_truncate+0x417/0x720 fs/f2fs/file.c:888 f2fs_setattr+0xc4f/0x12f0 fs/f2fs/file.c:1112 notify_change+0xbca/0xe90 fs/attr.c:552 do_truncate+0x222/0x310 fs/open.c:65 handle_truncate fs/namei.c:3466 [inline] do_open fs/namei.c:3849 [inline] path_openat+0x2e4f/0x35d0 fs/namei.c:4004 do_filp_open+0x284/0x4e0 fs/namei.c:4031 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_creat fs/open.c:1522 [inline] __se_sys_creat fs/open.c:1516 [inline] __x64_sys_creat+0x124/0x170 fs/open.c:1516 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 The reason is: in fuzzed image, sbi->total_valid_block_count is inconsistent w/ mapped blocks indexed by inode, so, we should not trigger panic for such case, instead, let's print log and set fsck flag.

Affected

35 ranges· showing 25
VendorProductVersion rangeFixed in
debiandebian_linux
debianlinux< linux 6.1.147-1 (bookworm)linux 6.1.147-1 (bookworm)
debianlinux-6.1< linux 6.1.147-1 (bookworm)linux 6.1.147-1 (bookworm)
linuxlinux
linuxlinux>= 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5 < 49bc7bf38e42cfa642787e947f5721696ea73ac349bc7bf38e42cfa642787e947f5721696ea73ac3
linuxlinux>= 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5 < f1b743c1955151bd392539b739a3ad155296be13f1b743c1955151bd392539b739a3ad155296be13
linuxlinux>= 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5 < 6a324d77f7ea1a91d55c4b6ad970e3ac9ab6a20d6a324d77f7ea1a91d55c4b6ad970e3ac9ab6a20d
linuxlinux>= 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5 < 25f3776b58c1c45ad2e50ab4b263505b4d2378ca25f3776b58c1c45ad2e50ab4b263505b4d2378ca
linuxlinux>= 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5 < a39cc43efc1bca74ed9d6cf9e60b995071f7d178a39cc43efc1bca74ed9d6cf9e60b995071f7d178
linuxlinux>= 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5 < 65b3f76592aed5a43c4d79375ac097acf975972b65b3f76592aed5a43c4d79375ac097acf975972b
linuxlinux>= 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5 < ccc28c0397f75a3ec9539cceed9db014d7b73869ccc28c0397f75a3ec9539cceed9db014d7b73869
linuxlinux>= 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5 < 05872a167c2cab80ef186ef23cc34a6776a1a30c05872a167c2cab80ef186ef23cc34a6776a1a30c
linuxlinux_kernel>= 0 < 5.10.244-15.10.244-1
linuxlinux_kernel>= 0 < 6.1.147-16.1.147-1
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 0 < 6.12.35-16.12.35-1
linuxlinux_kernel>= 0 < 5.15.0-156.1665.15.0-156.166
linuxlinux_kernel>= 0 < 6.8.0-100.1006.8.0-100.100
linuxlinux_kernel>= 3.8 < 5.4.2955.4.295
linuxlinux_kernel>= 5.11 < 5.15.1865.15.186
linuxlinux_kernel>= 5.16 < 6.1.1426.1.142
linuxlinux_kernel>= 5.5 < 5.10.2395.10.239
linuxlinux_kernel>= 6.13 < 6.15.36.15.3
linuxlinux_kernel>= 6.2 < 6.6.946.6.94
linuxlinux_kernel>= 6.7 < 6.12.346.12.34

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM