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cvelist/2025/37xxx/CVE-2025-37741.json
CVE Team 5e803aff1b
"-Synchronized-Data."
2025-05-02 07:00:40 +00:00

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{
"data_version": "4.0",
"data_type": "CVE",
"data_format": "MITRE",
"CVE_data_meta": {
"ID": "CVE-2025-37741",
"ASSIGNER": "cve@kernel.org",
"STATE": "PUBLIC"
},
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: Prevent copying of nlink with value 0 from disk inode\n\nsyzbot report a deadlock in diFree. [1]\n\nWhen calling \"ioctl$LOOP_SET_STATUS64\", the offset value passed in is 4,\nwhich does not match the mounted loop device, causing the mapping of the\nmounted loop device to be invalidated.\n\nWhen creating the directory and creating the inode of iag in diReadSpecial(),\nread the page of fixed disk inode (AIT) in raw mode in read_metapage(), the\nmetapage data it returns is corrupted, which causes the nlink value of 0 to be\nassigned to the iag inode when executing copy_from_dinode(), which ultimately\ncauses a deadlock when entering diFree().\n\nTo avoid this, first check the nlink value of dinode before setting iag inode.\n\n[1]\nWARNING: possible recursive locking detected\n6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0 Not tainted\n--------------------------------------------\nsyz-executor301/5309 is trying to acquire lock:\nffff888044548920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x37c/0x2fb0 fs/jfs/jfs_imap.c:889\n\nbut task is already holding lock:\nffff888044548920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diAlloc+0x1b6/0x1630\n\nother info that might help us debug this:\n Possible unsafe locking scenario:\n\n CPU0\n ----\n lock(&(imap->im_aglock[index]));\n lock(&(imap->im_aglock[index]));\n\n *** DEADLOCK ***\n\n May be due to missing lock nesting notation\n\n5 locks held by syz-executor301/5309:\n #0: ffff8880422a4420 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515\n #1: ffff88804755b390 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]\n #1: ffff88804755b390 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026\n #2: ffff888044548920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diAlloc+0x1b6/0x1630\n #3: ffff888044548890 (&imap->im_freelock){+.+.}-{3:3}, at: diNewIAG fs/jfs/jfs_imap.c:2460 [inline]\n #3: ffff888044548890 (&imap->im_freelock){+.+.}-{3:3}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline]\n #3: ffff888044548890 (&imap->im_freelock){+.+.}-{3:3}, at: diAllocAG+0x4b7/0x1e50 fs/jfs/jfs_imap.c:1669\n #4: ffff88804755a618 (&jfs_ip->rdwrlock/1){++++}-{3:3}, at: diNewIAG fs/jfs/jfs_imap.c:2477 [inline]\n #4: ffff88804755a618 (&jfs_ip->rdwrlock/1){++++}-{3:3}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline]\n #4: ffff88804755a618 (&jfs_ip->rdwrlock/1){++++}-{3:3}, at: diAllocAG+0x869/0x1e50 fs/jfs/jfs_imap.c:1669\n\nstack backtrace:\nCPU: 0 UID: 0 PID: 5309 Comm: syz-executor301 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n print_deadlock_bug+0x483/0x620 kernel/locking/lockdep.c:3037\n check_deadlock kernel/locking/lockdep.c:3089 [inline]\n validate_chain+0x15e2/0x5920 kernel/locking/lockdep.c:3891\n __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202\n lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825\n __mutex_lock_common kernel/locking/mutex.c:608 [inline]\n __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752\n diFree+0x37c/0x2fb0 fs/jfs/jfs_imap.c:889\n jfs_evict_inode+0x32d/0x440 fs/jfs/inode.c:156\n evict+0x4e8/0x9b0 fs/inode.c:725\n diFreeSpecial fs/jfs/jfs_imap.c:552 [inline]\n duplicateIXtree+0x3c6/0x550 fs/jfs/jfs_imap.c:3022\n diNewIAG fs/jfs/jfs_imap.c:2597 [inline]\n diAllocExt fs/jfs/jfs_imap.c:1905 [inline]\n diAllocAG+0x17dc/0x1e50 fs/jfs/jfs_imap.c:1669\n diAlloc+0x1d2/0x1630 fs/jfs/jfs_imap.c:1590\n ialloc+0x8f/0x900 fs/jfs/jfs_inode.c:56\n jfs_mkdir+0x1c5/0xba0 fs/jfs/namei.c:225\n vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4257\n do_mkdirat+0x264/0x3a0 fs/namei.c:4280\n __do_sys_mkdirat fs/namei.c:4295 [inline]\n __se_sys_mkdirat fs/namei.c:4293 [inline]\n __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4293\n do_syscall_x64 arch/x86/en\n---truncated---"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"affects": {
"vendor": {
"vendor_data": [
{
"vendor_name": "Linux",
"product": {
"product_data": [
{
"product_name": "Linux",
"version": {
"version_data": [
{
"version_affected": "<",
"version_name": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"version_value": "5b2f26d3fba4e9aac314f8bc0963b3fc28c0e456"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"versions": [
{
"version": "5.4.293",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.237",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.181",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.135",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.88",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.24",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.13.12",
"lessThanOrEqual": "6.13.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.14.3",
"lessThanOrEqual": "6.14.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.15-rc1",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
],
"defaultStatus": "affected"
}
}
]
}
}
]
}
}
]
}
},
"references": {
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"url": "https://git.kernel.org/stable/c/5b2f26d3fba4e9aac314f8bc0963b3fc28c0e456",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/5b2f26d3fba4e9aac314f8bc0963b3fc28c0e456"
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{
"url": "https://git.kernel.org/stable/c/8b5ce75f8bd3ddf480cc0a240d7ff5cdea0444f9",
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"name": "https://git.kernel.org/stable/c/8b5ce75f8bd3ddf480cc0a240d7ff5cdea0444f9"
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{
"url": "https://git.kernel.org/stable/c/86bfeaa18f9e4615b97f2d613e0fcc4ced196527",
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"name": "https://git.kernel.org/stable/c/86bfeaa18f9e4615b97f2d613e0fcc4ced196527"
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"url": "https://git.kernel.org/stable/c/c9541c2bd0edbdbc5c1148a84d3b48dc8d1b8af2",
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"name": "https://git.kernel.org/stable/c/c9541c2bd0edbdbc5c1148a84d3b48dc8d1b8af2"
},
{
"url": "https://git.kernel.org/stable/c/b3c4884b987e5d8d0ec061a4d52653c4f4b9c37e",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/b3c4884b987e5d8d0ec061a4d52653c4f4b9c37e"
},
{
"url": "https://git.kernel.org/stable/c/aeb926e605f97857504bdf748f575e40617e2ef9",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/aeb926e605f97857504bdf748f575e40617e2ef9"
},
{
"url": "https://git.kernel.org/stable/c/994787341358816d91b2fded288ecb7f129f2b27",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/994787341358816d91b2fded288ecb7f129f2b27"
},
{
"url": "https://git.kernel.org/stable/c/a2b560815528ae8e266fca6038bb5585d13aaef4",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/a2b560815528ae8e266fca6038bb5585d13aaef4"
},
{
"url": "https://git.kernel.org/stable/c/b61e69bb1c049cf507e3c654fa3dc1568231bd07",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/b61e69bb1c049cf507e3c654fa3dc1568231bd07"
}
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"generator": {
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