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vuln-cve/data/2025/37xxx/CVE-2025-37742.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-37742",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-04-16T04:51:23.936Z",
"datePublished": "2025-05-01T12:55:50.603Z",
"dateUpdated": "2026-05-11T21:14:17.131Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T21:14:17.131Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: Fix uninit-value access of imap allocated in the diMount() function\n\nsyzbot reports that hex_dump_to_buffer is using uninit-value:\n\n=====================================================\nBUG: KMSAN: uninit-value in hex_dump_to_buffer+0x888/0x1100 lib/hexdump.c:171\nhex_dump_to_buffer+0x888/0x1100 lib/hexdump.c:171\nprint_hex_dump+0x13d/0x3e0 lib/hexdump.c:276\ndiFree+0x5ba/0x4350 fs/jfs/jfs_imap.c:876\njfs_evict_inode+0x510/0x550 fs/jfs/inode.c:156\nevict+0x723/0xd10 fs/inode.c:796\niput_final fs/inode.c:1946 [inline]\niput+0x97b/0xdb0 fs/inode.c:1972\ntxUpdateMap+0xf3e/0x1150 fs/jfs/jfs_txnmgr.c:2367\ntxLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]\njfs_lazycommit+0x627/0x11d0 fs/jfs/jfs_txnmgr.c:2733\nkthread+0x6b9/0xef0 kernel/kthread.c:464\nret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:148\nret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n\nUninit was created at:\nslab_post_alloc_hook mm/slub.c:4121 [inline]\nslab_alloc_node mm/slub.c:4164 [inline]\n__kmalloc_cache_noprof+0x8e3/0xdf0 mm/slub.c:4320\nkmalloc_noprof include/linux/slab.h:901 [inline]\ndiMount+0x61/0x7f0 fs/jfs/jfs_imap.c:105\njfs_mount+0xa8e/0x11d0 fs/jfs/jfs_mount.c:176\njfs_fill_super+0xa47/0x17c0 fs/jfs/super.c:523\nget_tree_bdev_flags+0x6ec/0x910 fs/super.c:1636\nget_tree_bdev+0x37/0x50 fs/super.c:1659\njfs_get_tree+0x34/0x40 fs/jfs/super.c:635\nvfs_get_tree+0xb1/0x5a0 fs/super.c:1814\ndo_new_mount+0x71f/0x15e0 fs/namespace.c:3560\npath_mount+0x742/0x1f10 fs/namespace.c:3887\ndo_mount fs/namespace.c:3900 [inline]\n__do_sys_mount fs/namespace.c:4111 [inline]\n__se_sys_mount+0x71f/0x800 fs/namespace.c:4088\n__x64_sys_mount+0xe4/0x150 fs/namespace.c:4088\nx64_sys_call+0x39bf/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:166\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\n=====================================================\n\nThe reason is that imap is not properly initialized after memory\nallocation. It will cause the snprintf() function to write uninitialized\ndata into linebuf within hex_dump_to_buffer().\n\nFix this by using kzalloc instead of kmalloc to clear its content at the\nbeginning in diMount()."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/jfs/jfs_imap.c"
],
"versions": [
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "4f10732712fce33e53703ffe5ed9155f23814097",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "cab1852368dd74d629ee02abdbc559218ca64dde",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "067347e00a3a7d04afed93f080c6c131e5dd15ee",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "63148ce4904faa668daffdd1d3c1199ae315ef2c",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "7057f3aab47629d38e54eae83505813cf0da1e4b",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "d0d7eca253ccd0619b3d2b683ffe32218ebca9ac",
"status": "affected",
"versionType": "git"
},
{
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"lessThan": "9629d7d66c621671d9a47afe27ca9336bfc8a9ea",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/jfs/jfs_imap.c"
],
"versions": [
{
"version": "2.6.12",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.12",
"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",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.12",
"versionEndExcluding": "5.15.181"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.12",
"versionEndExcluding": "6.1.135"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.12",
"versionEndExcluding": "6.6.88"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.12",
"versionEndExcluding": "6.12.24"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.12",
"versionEndExcluding": "6.13.12"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.12",
"versionEndExcluding": "6.14.3"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.12",
"versionEndExcluding": "6.15"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/4f10732712fce33e53703ffe5ed9155f23814097"
},
{
"url": "https://git.kernel.org/stable/c/cab1852368dd74d629ee02abdbc559218ca64dde"
},
{
"url": "https://git.kernel.org/stable/c/067347e00a3a7d04afed93f080c6c131e5dd15ee"
},
{
"url": "https://git.kernel.org/stable/c/63148ce4904faa668daffdd1d3c1199ae315ef2c"
},
{
"url": "https://git.kernel.org/stable/c/7057f3aab47629d38e54eae83505813cf0da1e4b"
},
{
"url": "https://git.kernel.org/stable/c/d0d7eca253ccd0619b3d2b683ffe32218ebca9ac"
},
{
"url": "https://git.kernel.org/stable/c/9629d7d66c621671d9a47afe27ca9336bfc8a9ea"
}
],
"title": "jfs: Fix uninit-value access of imap allocated in the diMount() function",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"title": "CVE Program Container",
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2025-11-03T19:54:20.666Z"
}
}
]
}
}
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