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cvelist/2024/35xxx/CVE-2024-35849.json
CVE Team 79ffa989e2
"-Synchronized-Data."
2024-11-05 10:04:06 +00:00

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{
"data_version": "4.0",
"data_type": "CVE",
"data_format": "MITRE",
"CVE_data_meta": {
"ID": "CVE-2024-35849",
"ASSIGNER": "cve@kernel.org",
"STATE": "PUBLIC"
},
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix information leak in btrfs_ioctl_logical_to_ino()\n\nSyzbot reported the following information leak for in\nbtrfs_ioctl_logical_to_ino():\n\n BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x110 lib/usercopy.c:40\n instrument_copy_to_user include/linux/instrumented.h:114 [inline]\n _copy_to_user+0xbc/0x110 lib/usercopy.c:40\n copy_to_user include/linux/uaccess.h:191 [inline]\n btrfs_ioctl_logical_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3499\n btrfs_ioctl+0x714/0x1260\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:904 [inline]\n __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890\n __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890\n x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n Uninit was created at:\n __kmalloc_large_node+0x231/0x370 mm/slub.c:3921\n __do_kmalloc_node mm/slub.c:3954 [inline]\n __kmalloc_node+0xb07/0x1060 mm/slub.c:3973\n kmalloc_node include/linux/slab.h:648 [inline]\n kvmalloc_node+0xc0/0x2d0 mm/util.c:634\n kvmalloc include/linux/slab.h:766 [inline]\n init_data_container+0x49/0x1e0 fs/btrfs/backref.c:2779\n btrfs_ioctl_logical_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3480\n btrfs_ioctl+0x714/0x1260\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:904 [inline]\n __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890\n __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890\n x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n Bytes 40-65535 of 65536 are uninitialized\n Memory access of size 65536 starts at ffff888045a40000\n\nThis happens, because we're copying a 'struct btrfs_data_container' back\nto user-space. This btrfs_data_container is allocated in\n'init_data_container()' via kvmalloc(), which does not zero-fill the\nmemory.\n\nFix this by using kvzalloc() which zeroes out the memory on allocation."
}
]
},
"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": "1da177e4c3f4",
"version_value": "689efe22e9b5"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"versions": [
{
"version": "4.19.313",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.4.275",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.216",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.158",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.90",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.30",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.8.9",
"lessThanOrEqual": "6.8.*",
"status": "unaffected",
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},
{
"version": "6.9",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
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"defaultStatus": "affected"
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}
},
"references": {
"reference_data": [
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"url": "https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/689efe22e9b5b7d9d523119a9a5c3c17107a0772"
},
{
"url": "https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86",
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"name": "https://git.kernel.org/stable/c/73db209dcd4ae026021234d40cfcb2fb5b564b86"
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{
"url": "https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6",
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"name": "https://git.kernel.org/stable/c/30189e54ba80e3209d34cfeea87b848f6ae025e6"
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"url": "https://git.kernel.org/stable/c/e58047553a4e859dafc8d1d901e1de77c9dd922d",
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{
"url": "https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc"
},
{
"url": "https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54",
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"name": "https://git.kernel.org/stable/c/fddc19631c51d9c17d43e9f822a7bc403af88d54"
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{
"url": "https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf"
}
]
},
"generator": {
"engine": "bippy-9e1c9544281a"
}
}
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