CVE-2023-54324 (GCVE-0-2023-54324)
Vulnerability from cvelistv5 – Published: 2025-12-30 12:37 – Updated: 2025-12-30 12:37
VLAI?
Title
dm: fix a race condition in retrieve_deps
Summary
In the Linux kernel, the following vulnerability has been resolved:
dm: fix a race condition in retrieve_deps
There's a race condition in the multipath target when retrieve_deps
races with multipath_message calling dm_get_device and dm_put_device.
retrieve_deps walks the list of open devices without holding any lock
but multipath may add or remove devices to the list while it is
running. The end result may be memory corruption or use-after-free
memory access.
See this description of a UAF with multipath_message():
https://listman.redhat.com/archives/dm-devel/2022-October/052373.html
Fix this bug by introducing a new rw semaphore "devices_lock". We grab
devices_lock for read in retrieve_deps and we grab it for write in
dm_get_device and dm_put_device.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < dbf1a719850577bb51fc7512a3972994b797a17b
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 38f6e5ae5d9ff4a4050ea6f7b543d5d5a4e087cf (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f6007dce0cd35d634d9be91ef3515a6385dcee16 (git) |
||
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"drivers/md/dm-core.h",
"drivers/md/dm-ioctl.c",
"drivers/md/dm-table.c"
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm: fix a race condition in retrieve_deps\n\nThere\u0027s a race condition in the multipath target when retrieve_deps\nraces with multipath_message calling dm_get_device and dm_put_device.\nretrieve_deps walks the list of open devices without holding any lock\nbut multipath may add or remove devices to the list while it is\nrunning. The end result may be memory corruption or use-after-free\nmemory access.\n\nSee this description of a UAF with multipath_message():\nhttps://listman.redhat.com/archives/dm-devel/2022-October/052373.html\n\nFix this bug by introducing a new rw semaphore \"devices_lock\". We grab\ndevices_lock for read in retrieve_deps and we grab it for write in\ndm_get_device and dm_put_device."
}
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"url": "https://git.kernel.org/stable/c/f6007dce0cd35d634d9be91ef3515a6385dcee16"
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"cveId": "CVE-2023-54324",
"datePublished": "2025-12-30T12:37:08.337Z",
"dateReserved": "2025-12-30T12:35:56.209Z",
"dateUpdated": "2025-12-30T12:37:08.337Z",
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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