HighFix available
dm cache: fix flushing uninitialized delayed_work on cache_ctr error
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: dm cache: fix flushing uninitialized delayed_work on cache_ctr error An unexpected WARN_ON from flush_work() may occur when cache creation fails, caused by destroying the uninitialized delayed_work waker in the error path of cache_create(). For example, the warning appears on the superblock checksum error. Reproduce steps: dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" Kernel logs: (snip) WARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Fix by pulling out the cancel_delayed_work_sync() from the constructor's error path. This patch doesn't affect the use-after-free fix for concurrent dm_resume and dm_destroy (commit 6a459d8edbdb ("dm cache: Fix UAF in destroy()")) as cache_dtr is not changed.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.237, 5.15.181, 6.1.117, 6.11.8, 6.6.61
- CVEs
- CVE-2024-50280
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 18:26 UTC · Revision 1
Source evidence
dm cache: fix flushing uninitialized delayed_work on cache_ctr error
core-osv · Original sourcePublished 19 Nov 2024, 01:30 UTC
In the Linux kernel, the following vulnerability has been resolved: dm cache: fix flushing uninitialized delayed_work on cache_ctr error An unexpected WARN_ON from flush_work() may occur when cache creation fails, caused by destroying the uninitialized delayed_work waker in the error path of cache_create(). For example, the warning appears on the superblock checksum error. Reproduce steps: dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" Kernel logs: (snip) WARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Fix by pulling out the cancel_delayed_work_sync() from the constructor's error path. This patch doesn't affect the use-after-free fix for concurrent dm_resume and dm_destroy (commit 6a459d8edbdb ("dm cache: Fix UAF in destroy()")) as cache_dtr is not changed.
osv:CVE-2024-50280
Kernel
Fixed versions: 5.10.237, 5.15.181, 6.1.117, 6.6.61, 6.11.8
Complete source record
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"title": "dm cache: fix flushing uninitialized delayed_work on cache_ctr error",
"summary": "In the Linux kernel, the following vulnerability has been resolved: dm cache: fix flushing uninitialized delayed_work on cache_ctr error An unexpected WARN_ON from flush_work() may occur when cache creation fails, caused by destroying the uninitialized delayed_work waker in the error path of cache_create(). For example, the warning appears on the superblock checksum error. Reproduce steps: dmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\" dmsetup create cdata --table \"0 65536 linear /dev/sdc 8192\" dmsetup create corig --table \"0 524288 linear /dev/sdc 262144\" dd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table \"0 524288 cache /dev/mapper/cmeta \\ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\" Kernel logs: (snip) WARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Fix by pulling out the cancel_delayed_work_sync() from the constructor's error path. This patch doesn't affect the use-after-free fix for concurrent dm_resume and dm_destroy (commit 6a459d8edbdb (\"dm cache: Fix UAF in destroy()\")) as cache_dtr is not changed.",
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]
},
{
"type": "ECOSYSTEM",
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{
"introduced": "5.11.0"
},
{
"fixed": "5.15.181"
}
]
},
{
"type": "ECOSYSTEM",
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{
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}
]
},
{
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},
{
"fixed": "6.6.61"
},
{
"fixed": "6.11.8"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50280.json"
}
}
],
"modified": "2026-10-28T02:30:51.575859480Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/135496c208ba26fd68cdef10b64ed7a91ac9a7ff",
"https://git.kernel.org/stable/c/40fac0271c7aedf60d81ed8214e80851e5b26312",
"https://git.kernel.org/stable/c/5a754d3c771280f2d06bf8ab716d6a0d36ca256e",
"https://git.kernel.org/stable/c/8cc12dab635333c4ea28e72d7b947be7d0543c2c",
"https://git.kernel.org/stable/c/aee3ecda73ce13af7c3e556383342b57e6bd0718",
"https://git.kernel.org/stable/c/d154b333a5667b6c1b213a11a41ad7aaccd10c3d",
"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50280.json",
"https://nvd.nist.gov/vuln/detail/CVE-2024-50280",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50280.json"
}
},
"related_cves": [
{
"value": "CVE-2024-50280",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 520091,
"published_at": "2024-11-19T01:30:21.999+00:00"
}