{"id":"CVE-2024-27005","revision":"4f4cc2aace3746d29ca653972c108df0","records":[{"revision":"4f4cc2aace3746d29ca653972c108df0","observedAt":"2026-10-30T13:45:33.454+00:00","statement":{"source":"cve-program","id":"CVE-2024-27005","aliases":[],"title":"interconnect: Don't access req_list while it's being manipulated","description":"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\")","state":0,"publishedAt":"2024-05-01T05:28:59.193+00:00","modifiedAt":"2026-10-30T12:18:05.338+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/interconnect/core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"9be2957f014d91088db1eb5dd09d9a03d7184dce\",\n                            \"lessThan\": \"fe549d8e976300d0dd75bd904eb216bed8b145e0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ee42bfc791aa3cd78e29046f26a09d189beb3efb\",\n                            \"lessThan\": \"19ec82b3cad1abef2a929262b8c1528f4e0c192d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ffb8917c70a4c88725ee40f9eeee9240ad1c1869\",\n                            \"lessThan\": \"8401bc2c188030fb14d1cb43c402a1cf42d86dd2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"af42269c3523492d71ebbe11fefae2653e9cdc78\",\n                            \"lessThan\": \"d0d04efa2e367921654b5106cc5c05e3757c2b42\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"af42269c3523492d71ebbe11fefae2653e9cdc78\",\n                            \"lessThan\": \"4c65507121ea8e0b47fae6d2049c8688390d46b6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"af42269c3523492d71ebbe11fefae2653e9cdc78\",\n                            \"lessThan\": \"de1bf25b6d771abdb52d43546cf57ad775fb68a1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2f3a124696d43de3c837f87a9f767c56ee86cf2a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.15.133\",\n                            \"lessThan\": \"5.15.151\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.55\",\n                            \"lessThan\": \"6.1.81\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.5.5\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/interconnect/core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.151\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.81\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.29\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.8.8\",\n                            \"lessThanOrEqual\": \"6.8.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.9\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/fe549d8e976300d0dd75bd904eb216bed8b145e0","https://git.kernel.org/stable/c/19ec82b3cad1abef2a929262b8c1528f4e0c192d","https://git.kernel.org/stable/c/8401bc2c188030fb14d1cb43c402a1cf42d86dd2","https://git.kernel.org/stable/c/d0d04efa2e367921654b5106cc5c05e3757c2b42","https://git.kernel.org/stable/c/4c65507121ea8e0b47fae6d2049c8688390d46b6","https://git.kernel.org/stable/c/de1bf25b6d771abdb52d43546cf57ad775fb68a1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-27005","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-27005","identifiers":["CVE-2024-27005"]},"retained":false,"historicalAffected":[]}],"coverage":[]}