gsd-2024-26756
Vulnerability from gsd
Modified
2024-02-20 06:02
Details
In the Linux kernel, the following vulnerability has been resolved:
md: Don't register sync_thread for reshape directly
Currently, if reshape is interrupted, then reassemble the array will
register sync_thread directly from pers->run(), in this case
'MD_RECOVERY_RUNNING' is set directly, however, there is no guarantee
that md_do_sync() will be executed, hence stop_sync_thread() will hang
because 'MD_RECOVERY_RUNNING' can't be cleared.
Last patch make sure that md_do_sync() will set MD_RECOVERY_DONE,
however, following hang can still be triggered by dm-raid test
shell/lvconvert-raid-reshape.sh occasionally:
[root@fedora ~]# cat /proc/1982/stack
[<0>] stop_sync_thread+0x1ab/0x270 [md_mod]
[<0>] md_frozen_sync_thread+0x5c/0xa0 [md_mod]
[<0>] raid_presuspend+0x1e/0x70 [dm_raid]
[<0>] dm_table_presuspend_targets+0x40/0xb0 [dm_mod]
[<0>] __dm_destroy+0x2a5/0x310 [dm_mod]
[<0>] dm_destroy+0x16/0x30 [dm_mod]
[<0>] dev_remove+0x165/0x290 [dm_mod]
[<0>] ctl_ioctl+0x4bb/0x7b0 [dm_mod]
[<0>] dm_ctl_ioctl+0x11/0x20 [dm_mod]
[<0>] vfs_ioctl+0x21/0x60
[<0>] __x64_sys_ioctl+0xb9/0xe0
[<0>] do_syscall_64+0xc6/0x230
[<0>] entry_SYSCALL_64_after_hwframe+0x6c/0x74
Meanwhile mddev->recovery is:
MD_RECOVERY_RUNNING |
MD_RECOVERY_INTR |
MD_RECOVERY_RESHAPE |
MD_RECOVERY_FROZEN
Fix this problem by remove the code to register sync_thread directly
from raid10 and raid5. And let md_check_recovery() to register
sync_thread.
Aliases
{
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2024-26756"
],
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don\u0027t register sync_thread for reshape directly\n\nCurrently, if reshape is interrupted, then reassemble the array will\nregister sync_thread directly from pers-\u003erun(), in this case\n\u0027MD_RECOVERY_RUNNING\u0027 is set directly, however, there is no guarantee\nthat md_do_sync() will be executed, hence stop_sync_thread() will hang\nbecause \u0027MD_RECOVERY_RUNNING\u0027 can\u0027t be cleared.\n\nLast patch make sure that md_do_sync() will set MD_RECOVERY_DONE,\nhowever, following hang can still be triggered by dm-raid test\nshell/lvconvert-raid-reshape.sh occasionally:\n\n[root@fedora ~]# cat /proc/1982/stack\n[\u003c0\u003e] stop_sync_thread+0x1ab/0x270 [md_mod]\n[\u003c0\u003e] md_frozen_sync_thread+0x5c/0xa0 [md_mod]\n[\u003c0\u003e] raid_presuspend+0x1e/0x70 [dm_raid]\n[\u003c0\u003e] dm_table_presuspend_targets+0x40/0xb0 [dm_mod]\n[\u003c0\u003e] __dm_destroy+0x2a5/0x310 [dm_mod]\n[\u003c0\u003e] dm_destroy+0x16/0x30 [dm_mod]\n[\u003c0\u003e] dev_remove+0x165/0x290 [dm_mod]\n[\u003c0\u003e] ctl_ioctl+0x4bb/0x7b0 [dm_mod]\n[\u003c0\u003e] dm_ctl_ioctl+0x11/0x20 [dm_mod]\n[\u003c0\u003e] vfs_ioctl+0x21/0x60\n[\u003c0\u003e] __x64_sys_ioctl+0xb9/0xe0\n[\u003c0\u003e] do_syscall_64+0xc6/0x230\n[\u003c0\u003e] entry_SYSCALL_64_after_hwframe+0x6c/0x74\n\nMeanwhile mddev-\u003erecovery is:\nMD_RECOVERY_RUNNING |\nMD_RECOVERY_INTR |\nMD_RECOVERY_RESHAPE |\nMD_RECOVERY_FROZEN\n\nFix this problem by remove the code to register sync_thread directly\nfrom raid10 and raid5. And let md_check_recovery() to register\nsync_thread.",
"id": "GSD-2024-26756",
"modified": "2024-02-20T06:02:29.211286Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "cve@kernel.org",
"ID": "CVE-2024-26756",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Linux",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "f67055780caa",
"version_value": "13b520fb62b7"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"defaultStatus": "affected",
"versions": [
{
"status": "affected",
"version": "2.6.17"
},
{
"lessThan": "2.6.17",
"status": "unaffected",
"version": "0",
"versionType": "custom"
},
{
"lessThanOrEqual": "6.7.*",
"status": "unaffected",
"version": "6.7.7",
"versionType": "custom"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.8",
"versionType": "original_commit_for_fix"
}
]
}
}
]
}
}
]
},
"vendor_name": "Linux"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don\u0027t register sync_thread for reshape directly\n\nCurrently, if reshape is interrupted, then reassemble the array will\nregister sync_thread directly from pers-\u003erun(), in this case\n\u0027MD_RECOVERY_RUNNING\u0027 is set directly, however, there is no guarantee\nthat md_do_sync() will be executed, hence stop_sync_thread() will hang\nbecause \u0027MD_RECOVERY_RUNNING\u0027 can\u0027t be cleared.\n\nLast patch make sure that md_do_sync() will set MD_RECOVERY_DONE,\nhowever, following hang can still be triggered by dm-raid test\nshell/lvconvert-raid-reshape.sh occasionally:\n\n[root@fedora ~]# cat /proc/1982/stack\n[\u003c0\u003e] stop_sync_thread+0x1ab/0x270 [md_mod]\n[\u003c0\u003e] md_frozen_sync_thread+0x5c/0xa0 [md_mod]\n[\u003c0\u003e] raid_presuspend+0x1e/0x70 [dm_raid]\n[\u003c0\u003e] dm_table_presuspend_targets+0x40/0xb0 [dm_mod]\n[\u003c0\u003e] __dm_destroy+0x2a5/0x310 [dm_mod]\n[\u003c0\u003e] dm_destroy+0x16/0x30 [dm_mod]\n[\u003c0\u003e] dev_remove+0x165/0x290 [dm_mod]\n[\u003c0\u003e] ctl_ioctl+0x4bb/0x7b0 [dm_mod]\n[\u003c0\u003e] dm_ctl_ioctl+0x11/0x20 [dm_mod]\n[\u003c0\u003e] vfs_ioctl+0x21/0x60\n[\u003c0\u003e] __x64_sys_ioctl+0xb9/0xe0\n[\u003c0\u003e] do_syscall_64+0xc6/0x230\n[\u003c0\u003e] entry_SYSCALL_64_after_hwframe+0x6c/0x74\n\nMeanwhile mddev-\u003erecovery is:\nMD_RECOVERY_RUNNING |\nMD_RECOVERY_INTR |\nMD_RECOVERY_RESHAPE |\nMD_RECOVERY_FROZEN\n\nFix this problem by remove the code to register sync_thread directly\nfrom raid10 and raid5. And let md_check_recovery() to register\nsync_thread."
}
]
},
"generator": {
"engine": "bippy-5f0117140d9a"
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://git.kernel.org/stable/c/13b520fb62b772e408f9b79c5fe18ad414e90417",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/13b520fb62b772e408f9b79c5fe18ad414e90417"
},
{
"name": "https://git.kernel.org/stable/c/ad39c08186f8a0f221337985036ba86731d6aafe",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/ad39c08186f8a0f221337985036ba86731d6aafe"
}
]
}
},
"nvd.nist.gov": {
"cve": {
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd: Don\u0027t register sync_thread for reshape directly\n\nCurrently, if reshape is interrupted, then reassemble the array will\nregister sync_thread directly from pers-\u003erun(), in this case\n\u0027MD_RECOVERY_RUNNING\u0027 is set directly, however, there is no guarantee\nthat md_do_sync() will be executed, hence stop_sync_thread() will hang\nbecause \u0027MD_RECOVERY_RUNNING\u0027 can\u0027t be cleared.\n\nLast patch make sure that md_do_sync() will set MD_RECOVERY_DONE,\nhowever, following hang can still be triggered by dm-raid test\nshell/lvconvert-raid-reshape.sh occasionally:\n\n[root@fedora ~]# cat /proc/1982/stack\n[\u003c0\u003e] stop_sync_thread+0x1ab/0x270 [md_mod]\n[\u003c0\u003e] md_frozen_sync_thread+0x5c/0xa0 [md_mod]\n[\u003c0\u003e] raid_presuspend+0x1e/0x70 [dm_raid]\n[\u003c0\u003e] dm_table_presuspend_targets+0x40/0xb0 [dm_mod]\n[\u003c0\u003e] __dm_destroy+0x2a5/0x310 [dm_mod]\n[\u003c0\u003e] dm_destroy+0x16/0x30 [dm_mod]\n[\u003c0\u003e] dev_remove+0x165/0x290 [dm_mod]\n[\u003c0\u003e] ctl_ioctl+0x4bb/0x7b0 [dm_mod]\n[\u003c0\u003e] dm_ctl_ioctl+0x11/0x20 [dm_mod]\n[\u003c0\u003e] vfs_ioctl+0x21/0x60\n[\u003c0\u003e] __x64_sys_ioctl+0xb9/0xe0\n[\u003c0\u003e] do_syscall_64+0xc6/0x230\n[\u003c0\u003e] entry_SYSCALL_64_after_hwframe+0x6c/0x74\n\nMeanwhile mddev-\u003erecovery is:\nMD_RECOVERY_RUNNING |\nMD_RECOVERY_INTR |\nMD_RECOVERY_RESHAPE |\nMD_RECOVERY_FROZEN\n\nFix this problem by remove the code to register sync_thread directly\nfrom raid10 and raid5. And let md_check_recovery() to register\nsync_thread."
}
],
"id": "CVE-2024-26756",
"lastModified": "2024-04-03T17:24:18.150",
"metrics": {},
"published": "2024-04-03T17:15:52.150",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/13b520fb62b772e408f9b79c5fe18ad414e90417"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ad39c08186f8a0f221337985036ba86731d6aafe"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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