CVE-2022-48931 (GCVE-0-2022-48931)
Vulnerability from cvelistv5 – Published: 2024-08-22 03:31 – Updated: 2026-05-11 18:49
VLAI
EPSS
VEX
Title
configfs: fix a race in configfs_{,un}register_subsystem()
Summary
In the Linux kernel, the following vulnerability has been resolved:
configfs: fix a race in configfs_{,un}register_subsystem()
When configfs_register_subsystem() or configfs_unregister_subsystem()
is executing link_group() or unlink_group(),
it is possible that two processes add or delete list concurrently.
Some unfortunate interleavings of them can cause kernel panic.
One of cases is:
A --> B --> C --> D
A <-- B <-- C <-- D
delete list_head *B | delete list_head *C
--------------------------------|-----------------------------------
configfs_unregister_subsystem | configfs_unregister_subsystem
unlink_group | unlink_group
unlink_obj | unlink_obj
list_del_init | list_del_init
__list_del_entry | __list_del_entry
__list_del | __list_del
// next == C |
next->prev = prev |
| next->prev = prev
prev->next = next |
| // prev == B
| prev->next = next
Fix this by adding mutex when calling link_group() or unlink_group(),
but parent configfs_subsystem is NULL when config_item is root.
So I create a mutex configfs_subsystem_mutex.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:32 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
7063fbf2261194f72ee75afca67b3b38b554b5fa , < 40805099af11f68c5ca7dbcfacf455da8f99f622
(git)
Affected: 7063fbf2261194f72ee75afca67b3b38b554b5fa , < d1654de19d42f513b6cfe955cc77e7f427e05a77 (git) Affected: 7063fbf2261194f72ee75afca67b3b38b554b5fa , < a37024f7757c25550accdebf49e497ad6ae239fe (git) Affected: 7063fbf2261194f72ee75afca67b3b38b554b5fa , < b7e2b91fcb5c78c414e33dc8d50642e307ca0c5a (git) Affected: 7063fbf2261194f72ee75afca67b3b38b554b5fa , < a7ab53d3c27dfe83bb594456b9f38a37796ec39b (git) Affected: 7063fbf2261194f72ee75afca67b3b38b554b5fa , < e7a66dd2687758718eddd79b542a95cf3aa488cc (git) Affected: 7063fbf2261194f72ee75afca67b3b38b554b5fa , < 3aadfd46858b1f64d4d6a0654b863e21aabff975 (git) Affected: 7063fbf2261194f72ee75afca67b3b38b554b5fa , < 84ec758fb2daa236026506868c8796b0500c047d (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.16
Unaffected: 0 , < 2.6.16 (semver) Unaffected: 4.9.304 , ≤ 4.9.* (semver) Unaffected: 4.14.269 , ≤ 4.14.* (semver) Unaffected: 4.19.232 , ≤ 4.19.* (semver) Unaffected: 5.4.182 , ≤ 5.4.* (semver) Unaffected: 5.10.103 , ≤ 5.10.* (semver) Unaffected: 5.15.26 , ≤ 5.15.* (semver) Unaffected: 5.16.12 , ≤ 5.16.* (semver) Unaffected: 5.17 , ≤ * (original_commit_for_fix) |
guessed |
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Algunas intercalaciones desafortunadas de ellos pueden causar p\u00e1nico en el kernel. Uno de los casos es: A --\u0026gt; B --\u0026gt; C --\u0026gt; DA \u0026lt;-- B \u0026lt;-- C \u0026lt;-- D eliminar list_head *B | eliminar list_head *C --------------------------------|------------- ---------------------- configfs_unregister_subsystem | configfs_unregister_subsystem unlink_group | desvincular_grupo desvincular_obj | unlink_obj list_del_init | list_del_init __list_del_entry | __list_del_entry __list_del | __list_del // siguiente == C | siguiente-\u0026gt;anterior = anterior | | siguiente-\u0026gt;anterior = anterior anterior-\u0026gt;siguiente = siguiente | | // anterior == B | prev-\u0026gt;next = next Solucione esto agregando mutex al llamar a link_group() o unlink_group(), pero el configfs_subsystem principal es NULL cuando config_item es root. Entonces creo un mutex configfs_subsystem_mutex.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/configfs/dir.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"7063fbf2261194f72ee75afca67b3b38b554b5fa\",\"lessThan\":\"40805099af11f68c5ca7dbcfacf455da8f99f622\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7063fbf2261194f72ee75afca67b3b38b554b5fa\",\"lessThan\":\"d1654de19d42f513b6cfe955cc77e7f427e05a77\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7063fbf2261194f72ee75afca67b3b38b554b5fa\",\"lessThan\":\"a37024f7757c25550accdebf49e497ad6ae239fe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7063fbf2261194f72ee75afca67b3b38b554b5fa\",\"lessThan\":\"b7e2b91fcb5c78c414e33dc8d50642e307ca0c5a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7063fbf2261194f72ee75afca67b3b38b554b5fa\",\"lessThan\":\"a7ab53d3c27dfe83bb594456b9f38a37796ec39b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7063fbf2261194f72ee75afca67b3b38b554b5fa\",\"lessThan\":\"e7a66dd2687758718eddd79b542a95cf3aa488cc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7063fbf2261194f72ee75afca67b3b38b554b5fa\",\"lessThan\":\"3aadfd46858b1f64d4d6a0654b863e21aabff975\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7063fbf2261194f72ee75afca67b3b38b554b5fa\",\"lessThan\":\"84ec758fb2daa236026506868c8796b0500c047d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/configfs/dir.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.9.304\",\"lessThanOrEqual\":\"4.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.269\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.232\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.182\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.103\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.26\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.16.12\",\"lessThanOrEqual\":\"5.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-10T15:32:49.740795Z\",\"id\":\"CVE-2022-48931\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.16\",\"versionEndExcluding\":\"4.9.304\",\"matchCriteriaId\":\"21912390-FBA5-4A90-B649-77DB55849C77\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.269\",\"matchCriteriaId\":\"F0F577D3-EFEA-42CF-80AA-905297529D7F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.232\",\"matchCriteriaId\":\"EF11C6DC-8B9A-4A37-B1E6-33B68F5366ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.182\",\"matchCriteriaId\":\"EE74CED8-43BF-4060-9578-93A09735B4E2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.103\",\"matchCriteriaId\":\"1A95B717-3110-4D4F-B8FC-373919BB514D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.26\",\"matchCriteriaId\":\"9AB342AE-A62E-4947-A6EA-511453062B2B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.12\",\"matchCriteriaId\":\"C76BAB21-7F23-4AD8-A25F-CA7B262A2698\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3aadfd46858b1f64d4d6a0654b863e21aabff975\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/40805099af11f68c5ca7dbcfacf455da8f99f622\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/84ec758fb2daa236026506868c8796b0500c047d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a37024f7757c25550accdebf49e497ad6ae239fe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a7ab53d3c27dfe83bb594456b9f38a37796ec39b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b7e2b91fcb5c78c414e33dc8d50642e307ca0c5a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d1654de19d42f513b6cfe955cc77e7f427e05a77\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e7a66dd2687758718eddd79b542a95cf3aa488cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T14:33:31+00:00",
"cve": "CVE-2022-48931",
"id": "CVE-2022-48931",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_affected": "198",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: configfs: fix a race in configfs_{,un}register_subsystem()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48931.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-13T23:51:39Z",
"cve": "CVE-2022-48931",
"id": "CVE-2022-48931",
"initial_release_date": "2024-08-23T02:53:31Z",
"product_status:known_affected": "478",
"product_status:known_not_affected": "57",
"product_status:recommended": "495",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-48931",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-48931.json",
"version": "54"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48931\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:32:49.740795Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:15.600Z\"}}], \"cna\": {\"title\": \"configfs: fix a race in configfs_{,un}register_subsystem()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7063fbf2261194f72ee75afca67b3b38b554b5fa\", \"lessThan\": \"40805099af11f68c5ca7dbcfacf455da8f99f622\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": 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\"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.103\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.26\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/configfs/dir.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/40805099af11f68c5ca7dbcfacf455da8f99f622\"}, {\"url\": \"https://git.kernel.org/stable/c/d1654de19d42f513b6cfe955cc77e7f427e05a77\"}, {\"url\": \"https://git.kernel.org/stable/c/a37024f7757c25550accdebf49e497ad6ae239fe\"}, {\"url\": \"https://git.kernel.org/stable/c/b7e2b91fcb5c78c414e33dc8d50642e307ca0c5a\"}, {\"url\": \"https://git.kernel.org/stable/c/a7ab53d3c27dfe83bb594456b9f38a37796ec39b\"}, {\"url\": \"https://git.kernel.org/stable/c/e7a66dd2687758718eddd79b542a95cf3aa488cc\"}, {\"url\": \"https://git.kernel.org/stable/c/3aadfd46858b1f64d4d6a0654b863e21aabff975\"}, {\"url\": \"https://git.kernel.org/stable/c/84ec758fb2daa236026506868c8796b0500c047d\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nconfigfs: fix a race in configfs_{,un}register_subsystem()\\n\\nWhen configfs_register_subsystem() or configfs_unregister_subsystem()\\nis executing link_group() or unlink_group(),\\nit is possible that two processes add or delete list concurrently.\\nSome unfortunate interleavings of them can cause kernel panic.\\n\\nOne of cases is:\\nA --\u003e B --\u003e C --\u003e D\\nA \u003c-- B \u003c-- C \u003c-- D\\n\\n delete list_head *B | delete list_head *C\\n--------------------------------|-----------------------------------\\nconfigfs_unregister_subsystem | configfs_unregister_subsystem\\n unlink_group | unlink_group\\n unlink_obj | unlink_obj\\n list_del_init | list_del_init\\n __list_del_entry | __list_del_entry\\n __list_del | __list_del\\n // next == C |\\n next-\u003eprev = prev |\\n | next-\u003eprev = prev\\n prev-\u003enext = next |\\n | // prev == B\\n | prev-\u003enext = next\\n\\nFix this by adding mutex when calling link_group() or unlink_group(),\\nbut parent configfs_subsystem is NULL when config_item is root.\\nSo I create a mutex configfs_subsystem_mutex.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.304\", \"versionStartIncluding\": \"2.6.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.269\", 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"cveMetadata": "{\"cveId\": \"CVE-2022-48931\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T18:49:55.167Z\", \"dateReserved\": \"2024-08-21T06:06:23.299Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-22T03:31:24.823Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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