Executive Summary



This vulnerability is currently undergoing analysis and not all information is available. Please check back soon to view the completed vulnerability summary
Informations
Name CVE-2025-38163 First vendor Publication 2025-07-03
Vendor Cve Last vendor Modification 2025-07-03

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-38163

Sources (Detail)

https://git.kernel.org/stable/c/05872a167c2cab80ef186ef23cc34a6776a1a30c
https://git.kernel.org/stable/c/25f3776b58c1c45ad2e50ab4b263505b4d2378ca
https://git.kernel.org/stable/c/49bc7bf38e42cfa642787e947f5721696ea73ac3
https://git.kernel.org/stable/c/65b3f76592aed5a43c4d79375ac097acf975972b
https://git.kernel.org/stable/c/6a324d77f7ea1a91d55c4b6ad970e3ac9ab6a20d
https://git.kernel.org/stable/c/a39cc43efc1bca74ed9d6cf9e60b995071f7d178
https://git.kernel.org/stable/c/ccc28c0397f75a3ec9539cceed9db014d7b73869
https://git.kernel.org/stable/c/f1b743c1955151bd392539b739a3ad155296be13
Source Url

Alert History

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0
Date Informations
2025-07-03 13:20:38
  • First insertion