CVE-2025-38163 (GCVE-0-2025-38163)
Vulnerability from cvelistv5
Published
2025-07-03 08:36
Modified
2025-11-03 17:34
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5
Version: 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5
Version: 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5
Version: 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5
Version: 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5
Version: 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5
Version: 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5
Version: 39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to do sanity check on sbi-\u003etotal_valid_block_count\n\nsyzbot reported a f2fs bug as below:\n\n------------[ cut here ]------------\nkernel BUG at fs/f2fs/f2fs.h:2521!\nRIP: 0010:dec_valid_block_count+0x3b2/0x3c0 fs/f2fs/f2fs.h:2521\nCall Trace:\n f2fs_truncate_data_blocks_range+0xc8c/0x11a0 fs/f2fs/file.c:695\n truncate_dnode+0x417/0x740 fs/f2fs/node.c:973\n truncate_nodes+0x3ec/0xf50 fs/f2fs/node.c:1014\n f2fs_truncate_inode_blocks+0x8e3/0x1370 fs/f2fs/node.c:1197\n f2fs_do_truncate_blocks+0x840/0x12b0 fs/f2fs/file.c:810\n f2fs_truncate_blocks+0x10d/0x300 fs/f2fs/file.c:838\n f2fs_truncate+0x417/0x720 fs/f2fs/file.c:888\n f2fs_setattr+0xc4f/0x12f0 fs/f2fs/file.c:1112\n notify_change+0xbca/0xe90 fs/attr.c:552\n do_truncate+0x222/0x310 fs/open.c:65\n handle_truncate fs/namei.c:3466 [inline]\n do_open fs/namei.c:3849 [inline]\n path_openat+0x2e4f/0x35d0 fs/namei.c:4004\n do_filp_open+0x284/0x4e0 fs/namei.c:4031\n do_sys_openat2+0x12b/0x1d0 fs/open.c:1429\n do_sys_open fs/open.c:1444 [inline]\n __do_sys_creat fs/open.c:1522 [inline]\n __se_sys_creat fs/open.c:1516 [inline]\n __x64_sys_creat+0x124/0x170 fs/open.c:1516\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94\n\nThe reason is: in fuzzed image, sbi-\u003etotal_valid_block_count is\ninconsistent w/ mapped blocks indexed by inode, so, we should\nnot trigger panic for such case, instead, let\u0027s print log and\nset fsck flag."
        }
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          "url": "https://git.kernel.org/stable/c/25f3776b58c1c45ad2e50ab4b263505b4d2378ca"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38163",
    "datePublished": "2025-07-03T08:36:04.397Z",
    "dateReserved": "2025-04-16T04:51:23.991Z",
    "dateUpdated": "2025-11-03T17:34:53.978Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38163\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-03T09:15:31.727\",\"lastModified\":\"2025-11-03T18:16:06.290\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: fix to do sanity check on sbi-\u003etotal_valid_block_count\\n\\nsyzbot reported a f2fs bug as below:\\n\\n------------[ cut here ]------------\\nkernel BUG at fs/f2fs/f2fs.h:2521!\\nRIP: 0010:dec_valid_block_count+0x3b2/0x3c0 fs/f2fs/f2fs.h:2521\\nCall Trace:\\n f2fs_truncate_data_blocks_range+0xc8c/0x11a0 fs/f2fs/file.c:695\\n truncate_dnode+0x417/0x740 fs/f2fs/node.c:973\\n truncate_nodes+0x3ec/0xf50 fs/f2fs/node.c:1014\\n f2fs_truncate_inode_blocks+0x8e3/0x1370 fs/f2fs/node.c:1197\\n f2fs_do_truncate_blocks+0x840/0x12b0 fs/f2fs/file.c:810\\n f2fs_truncate_blocks+0x10d/0x300 fs/f2fs/file.c:838\\n f2fs_truncate+0x417/0x720 fs/f2fs/file.c:888\\n f2fs_setattr+0xc4f/0x12f0 fs/f2fs/file.c:1112\\n notify_change+0xbca/0xe90 fs/attr.c:552\\n do_truncate+0x222/0x310 fs/open.c:65\\n handle_truncate fs/namei.c:3466 [inline]\\n do_open fs/namei.c:3849 [inline]\\n path_openat+0x2e4f/0x35d0 fs/namei.c:4004\\n do_filp_open+0x284/0x4e0 fs/namei.c:4031\\n do_sys_openat2+0x12b/0x1d0 fs/open.c:1429\\n do_sys_open fs/open.c:1444 [inline]\\n __do_sys_creat fs/open.c:1522 [inline]\\n __se_sys_creat fs/open.c:1516 [inline]\\n __x64_sys_creat+0x124/0x170 fs/open.c:1516\\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94\\n\\nThe reason is: in fuzzed image, sbi-\u003etotal_valid_block_count is\\ninconsistent w/ mapped blocks indexed by inode, so, we should\\nnot trigger panic for such case, instead, let\u0027s print log and\\nset fsck flag.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: correcci\u00f3n para realizar una comprobaci\u00f3n de cordura en sbi-\u0026gt;total_valid_block_count syzbot inform\u00f3 un error de f2fs como el siguiente: ------------[ cortar aqu\u00ed ]------------ \u00a1ERROR del kernel en fs/f2fs/f2fs.h:2521! RIP: 0010:dec_valid_block_count+0x3b2/0x3c0 fs/f2fs/f2fs.h:2521 Rastreo de llamadas:  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 El La raz\u00f3n es: en la imagen difusa, sbi-\u0026gt;total_valid_block_count es inconsistente con los bloques mapeados indexados por inodo, por lo tanto, no deber\u00edamos generar p\u00e1nico en tal caso, en su lugar, imprimamos el registro y configuremos el indicador fsck.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/05872a167c2cab80ef186ef23cc34a6776a1a30c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/25f3776b58c1c45ad2e50ab4b263505b4d2378ca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/49bc7bf38e42cfa642787e947f5721696ea73ac3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/65b3f76592aed5a43c4d79375ac097acf975972b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6a324d77f7ea1a91d55c4b6ad970e3ac9ab6a20d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a39cc43efc1bca74ed9d6cf9e60b995071f7d178\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ccc28c0397f75a3ec9539cceed9db014d7b73869\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f1b743c1955151bd392539b739a3ad155296be13\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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