{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-27005", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.207Z", "datePublished": "2024-05-01T05:28:59.193Z", "dateUpdated": "2024-12-19T08:52:20.679Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T08:52:20.679Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ninterconnect: Don't access req_list while it's being manipulated\n\nThe icc_lock mutex was split into separate icc_lock and icc_bw_lock\nmutexes in [1] to avoid lockdep splats. However, this didn't adequately\nprotect access to icc_node::req_list.\n\nThe icc_set_bw() function will eventually iterate over req_list while\nonly holding icc_bw_lock, but req_list can be modified while only\nholding icc_lock. This causes races between icc_set_bw(), of_icc_get(),\nand icc_put().\n\nExample A:\n\n CPU0 CPU1\n ---- ----\n icc_set_bw(path_a)\n mutex_lock(&icc_bw_lock);\n icc_put(path_b)\n mutex_lock(&icc_lock);\n aggregate_requests()\n hlist_for_each_entry(r, ...\n hlist_del(...\n <r = invalid pointer>\n\nExample B:\n\n CPU0 CPU1\n ---- ----\n icc_set_bw(path_a)\n mutex_lock(&icc_bw_lock);\n path_b = of_icc_get()\n of_icc_get_by_index()\n mutex_lock(&icc_lock);\n path_find()\n path_init()\n aggregate_requests()\n hlist_for_each_entry(r, ...\n hlist_add_head(...\n <r = invalid pointer>\n\nFix this by ensuring icc_bw_lock is always held before manipulating\nicc_node::req_list. The additional places icc_bw_lock is held don't\nperform any memory allocations, so we should still be safe from the\noriginal lockdep splats that motivated the separate locks.\n\n[1] commit af42269c3523 (\"interconnect: Fix locking for runpm vs reclaim\")"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/interconnect/core.c"], "versions": [{"version": "af42269c3523492d71ebbe11fefae2653e9cdc78", "lessThan": "d0d04efa2e367921654b5106cc5c05e3757c2b42", "status": "affected", "versionType": "git"}, {"version": "af42269c3523492d71ebbe11fefae2653e9cdc78", "lessThan": "4c65507121ea8e0b47fae6d2049c8688390d46b6", "status": "affected", "versionType": "git"}, {"version": "af42269c3523492d71ebbe11fefae2653e9cdc78", "lessThan": "de1bf25b6d771abdb52d43546cf57ad775fb68a1", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/interconnect/core.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.29", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.8", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/d0d04efa2e367921654b5106cc5c05e3757c2b42"}, {"url": "https://git.kernel.org/stable/c/4c65507121ea8e0b47fae6d2049c8688390d46b6"}, {"url": "https://git.kernel.org/stable/c/de1bf25b6d771abdb52d43546cf57ad775fb68a1"}], "title": "interconnect: Don't access req_list while it's being manipulated", "x_generator": {"engine": "bippy-5f407fcff5a0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-06-06T18:46:13.449387Z", "id": "CVE-2024-27005", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-05T15:17:57.462Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:21:05.951Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/d0d04efa2e367921654b5106cc5c05e3757c2b42", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/4c65507121ea8e0b47fae6d2049c8688390d46b6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/de1bf25b6d771abdb52d43546cf57ad775fb68a1", "tags": ["x_transferred"]}]}]}}

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However, this didn't adequately\nprotect access to icc_node::req_list.\n\nThe icc_set_bw() function will eventually iterate over req_list while\nonly holding icc_bw_lock, but req_list can be modified while only\nholding icc_lock. This causes races between icc_set_bw(), of_icc_get(),\nand icc_put().\n\nExample A:\n\n CPU0 CPU1\n ---- ----\n icc_set_bw(path_a)\n mutex_lock(&icc_bw_lock);\n icc_put(path_b)\n mutex_lock(&icc_lock);\n aggregate_requests()\n hlist_for_each_entry(r, ...\n hlist_del(...\n <r = invalid pointer>\n\nExample B:\n\n CPU0 CPU1\n ---- ----\n icc_set_bw(path_a)\n mutex_lock(&icc_bw_lock);\n path_b = of_icc_get()\n of_icc_get_by_index()\n mutex_lock(&icc_lock);\n path_find()\n path_init()\n aggregate_requests()\n hlist_for_each_entry(r, ...\n hlist_add_head(...\n <r = invalid pointer>\n\nFix this by ensuring icc_bw_lock is always held before manipulating\nicc_node::req_list. The additional places icc_bw_lock is held don't\nperform any memory allocations, so we should still be safe from the\noriginal lockdep splats that motivated the separate locks.\n\n[1] commit af42269c3523 (\"interconnect: Fix locking for runpm vs reclaim\")"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T08:52:20.679Z"}}}, "cveMetadata": {"cveId": "CVE-2024-27005", "state": "PUBLISHED", "dateUpdated": "2024-12-19T08:52:20.679Z", "dateReserved": "2024-02-19T14:20:24.207Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-01T05:28:59.193Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

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However, this didn't adequately\nprotect access to icc_node::req_list.\n\nThe icc_set_bw() function will eventually iterate over req_list while\nonly holding icc_bw_lock, but req_list can be modified while only\nholding icc_lock. This causes races between icc_set_bw(), of_icc_get(),\nand icc_put().\n\nExample A:\n\n CPU0 CPU1\n ---- ----\n icc_set_bw(path_a)\n mutex_lock(&icc_bw_lock);\n icc_put(path_b)\n mutex_lock(&icc_lock);\n aggregate_requests()\n hlist_for_each_entry(r, ...\n hlist_del(...\n <r = invalid pointer>\n\nExample B:\n\n CPU0 CPU1\n ---- ----\n icc_set_bw(path_a)\n mutex_lock(&icc_bw_lock);\n path_b = of_icc_get()\n of_icc_get_by_index()\n mutex_lock(&icc_lock);\n path_find()\n path_init()\n aggregate_requests()\n hlist_for_each_entry(r, ...\n hlist_add_head(...\n <r = invalid pointer>\n\nFix this by ensuring icc_bw_lock is always held before manipulating\nicc_node::req_list. The additional places icc_bw_lock is held don't\nperform any memory allocations, so we should still be safe from the\noriginal lockdep splats that motivated the separate locks.\n\n[1] commit af42269c3523 (\"interconnect: Fix locking for runpm vs reclaim\")"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: interconexi\u00f3n: no acceder a req_list mientras se est\u00e1 manipulando. El mutex icc_lock se dividi\u00f3 en mutex icc_lock e icc_bw_lock separados en [1] para evitar s\u00edmbolos de bloqueo. Sin embargo, esto no protegi\u00f3 adecuadamente el acceso a icc_node::req_list. La funci\u00f3n icc_set_bw() eventualmente iterar\u00e1 sobre req_list mientras solo mantiene icc_bw_lock, pero req_list se puede modificar mientras solo mantiene icc_lock. Esto provoca ejecuci\u00f3ns entre icc_set_bw(), of_icc_get() e icc_put(). Ejemplo A: CPU0 CPU1 ---- ---- icc_set_bw(path_a) mutex_lock(&amp;icc_bw_lock); icc_put(ruta_b) mutex_lock(&amp;icc_lock); agregado_requests() hlist_for_each_entry(r, ... hlist_del(... Ejemplo B: CPU0 CPU1 ---- ---- icc_set_bw(path_a) mutex_lock(&amp;icc_bw_lock); path_b = of_icc_get() of_icc_get_by_index( ) mutex_lock(&amp;icc_lock); path_find() path_init() agregado_requests() hlist_for_each_entry(r, ... hlist_add_head(... Solucione este problema asegur\u00e1ndose de que icc_bw_lock siempre se mantenga antes de manipular icc_node::req_list. El adicional Los lugares donde se mantiene icc_bw_lock no realizan ninguna asignaci\u00f3n de memoria, por lo que a\u00fan deber\u00edamos estar a salvo de los s\u00edmbolos de bloqueo originales que motivaron los bloqueos separados [1] commit af42269c3523 (\"interconexi\u00f3n: arreglar el bloqueo para runpm vs reclaim\")"}], "id": "CVE-2024-27005", "lastModified": "2025-04-08T18:43:15.860", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-05-01T06:15:18.883", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4c65507121ea8e0b47fae6d2049c8688390d46b6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0d04efa2e367921654b5106cc5c05e3757c2b42"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/de1bf25b6d771abdb52d43546cf57ad775fb68a1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4c65507121ea8e0b47fae6d2049c8688390d46b6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0d04efa2e367921654b5106cc5c05e3757c2b42"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/de1bf25b6d771abdb52d43546cf57ad775fb68a1"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: interconnect: Don&#39;t access req_list while it&#39;s being manipulated", "id": "2278289", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278289"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ninterconnect: Don't access req_list while it's being manipulated\nThe icc_lock mutex was split into separate icc_lock and icc_bw_lock\nmutexes in [1] to avoid lockdep splats. However, this didn't adequately\nprotect access to icc_node::req_list.\nThe icc_set_bw() function will eventually iterate over req_list while\nonly holding icc_bw_lock, but req_list can be modified while only\nholding icc_lock. This causes races between icc_set_bw(), of_icc_get(),\nand icc_put().\nExample A:\nCPU0 CPU1\n---- ----\nicc_set_bw(path_a)\nmutex_lock(&icc_bw_lock);\nicc_put(path_b)\nmutex_lock(&icc_lock);\naggregate_requests()\nhlist_for_each_entry(r, ...\nhlist_del(...\n<r = invalid pointer>\nExample B:\nCPU0 CPU1\n---- ----\nicc_set_bw(path_a)\nmutex_lock(&icc_bw_lock);\npath_b = of_icc_get()\nof_icc_get_by_index()\nmutex_lock(&icc_lock);\npath_find()\npath_init()\naggregate_requests()\nhlist_for_each_entry(r, ...\nhlist_add_head(...\n<r = invalid pointer>\nFix this by ensuring icc_bw_lock is always held before manipulating\nicc_node::req_list. The additional places icc_bw_lock is held don't\nperform any memory allocations, so we should still be safe from the\noriginal lockdep splats that motivated the separate locks.\n[1] commit af42269c3523 (\"interconnect: Fix locking for runpm vs reclaim\")", "A flaw was found in the interconnect subsystem in the Linux kernel, where access to req_list is not properly synchronized while it is being manipulated. This issue could lead to race conditions, causing system instability or other security concerns."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-27005", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-27005\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-27005\nhttps://lore.kernel.org/linux-cve-announce/2024050147-CVE-2024-27005-e630@gregkh/T"], "statement": "Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.", "threat_severity": "Moderate"}