CVE-2024-50280 (GCVE-0-2024-50280)

Vulnerability from cvelistv5 – Published: 2024-11-19 01:30 – Updated: 2025-11-03 22:27
VLAI?
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.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2b17026685a270b2beaf1cdd9857fcedd3505c7e , < 40fac0271c7aedf60d81ed8214e80851e5b26312 (git)
Affected: d2a0b298ebf83ab6236f66788a3541e91ce75a70 , < d154b333a5667b6c1b213a11a41ad7aaccd10c3d (git)
Affected: 6a3e412c2ab131c54945327a7676b006f000a209 , < 5a754d3c771280f2d06bf8ab716d6a0d36ca256e (git)
Affected: 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa , < 8cc12dab635333c4ea28e72d7b947be7d0543c2c (git)
Affected: 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa , < aee3ecda73ce13af7c3e556383342b57e6bd0718 (git)
Affected: 6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa , < 135496c208ba26fd68cdef10b64ed7a91ac9a7ff (git)
Affected: 034cbc8d3b47a56acd89453c29632a9c117de09d (git)
Affected: 993406104d2b28fe470126a062ad37a1e21e792e (git)
Affected: 4d20032dd90664de09f2902a7ea49ae2f7771746 (git)
Affected: 2f097dfac7579fd84ff98eb1d3acd41d53a485f3 (git)
Affected: 6ac4f36910764cb510bafc4c3768544f86ca48ca (git)
Create a notification for this product.
    Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 5.10.237 , ≤ 5.10.* (semver)
Unaffected: 5.15.181 , ≤ 5.15.* (semver)
Unaffected: 6.1.117 , ≤ 6.1.* (semver)
Unaffected: 6.6.61 , ≤ 6.6.* (semver)
Unaffected: 6.11.8 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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error\\n\\nAn unexpected WARN_ON from flush_work() may occur when cache creation\\nfails, caused by destroying the uninitialized delayed_work waker in the\\nerror path of cache_create(). For example, the warning appears on the\\nsuperblock checksum error.\\n\\nReproduce steps:\\n\\ndmsetup create cmeta --table \\\"0 8192 linear /dev/sdc 0\\\"\\ndmsetup create cdata --table \\\"0 65536 linear /dev/sdc 8192\\\"\\ndmsetup create corig --table \\\"0 524288 linear /dev/sdc 262144\\\"\\ndd if=/dev/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\\ndmsetup create cache --table \\\"0 524288 cache /dev/mapper/cmeta \\\\\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\\\"\\n\\nKernel logs:\\n\\n(snip)\\nWARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890\\n\\nFix by pulling out the cancel_delayed_work_sync() from the constructor\u0027s\\nerror path. This patch doesn\u0027t affect the use-after-free fix for\\nconcurrent dm_resume and dm_destroy (commit 6a459d8edbdb (\\\"dm cache: Fix\\nUAF in destroy()\\\")) as cache_dtr is not changed.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.237\", \"versionStartIncluding\": \"5.10.163\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.181\", \"versionStartIncluding\": \"5.15.87\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.117\", \"versionStartIncluding\": \"6.1.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.61\", \"versionStartIncluding\": \"6.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.8\", \"versionStartIncluding\": \"6.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"6.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.9.337\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.14.303\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.19.270\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.4.229\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.0.18\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T13:00:07.943Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50280\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T13:00:07.943Z\", \"dateReserved\": \"2024-10-21T19:36:19.983Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-11-19T01:30:21.999Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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  • 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.



Detection rules are retrieved from Rulezet.