{"id":"CVE-2026-81008","revision":"f0d1496a96b040db8c6080c9c6a7951c","records":[{"revision":"f0d1496a96b040db8c6080c9c6a7951c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-81008","aliases":[],"title":"interconnect: Fix use after free in icc_get() and of_icc_get_by_index()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ninterconnect: Fix use after free in icc_get() and of_icc_get_by_index()\n\nIn of_icc_get_by_index() and icc_get(), if the dynamic allocation for\npath->name fails via kasprintf(), the error handling path directly\ncalls kfree(path) to free the path object and returns an error.\n\nHowever, prior to this point, path_find() calls path_init(), which\nalready links the path's requests into the req_list of the respective\ninterconnect nodes via hlist_add_head(). Directly invoking kfree(path)\nleaves dangling pointers in the hlist. A subsequent call to icc_get()\nor icc_set_bw() will traverse or modify these corrupted lists, triggering\na slab use afterfree.\n\nKASAN report showing the vulnerability when reproducing via debugfs:\n\n  BUG: KASAN: slab-use-after-free in path_find+0x6f8/0xcfc\n  Write of size 8 at addr fff000000d43f748 by task sh/1\n  ...\n  Call trace:\n   kasan_report+0xac/0xfc\n   path_find+0x6f8/0xcfc\n   icc_get+0x148/0x380\n   icc_get_set+0xf8/0x2d0\n  ...\n  Freed by task 1:\n   kfree+0x1a0/0x4a4\n   icc_get+0x2cc/0x380\n   icc_get_set+0xf8/0x2d0\n\nFix this by replacing kfree(path) with the proper teardown function,\nicc_put(path), which safely removes the requests from the req_list using\nhlist_del() and drops the provider usage references before freeing the\nmemory.\n\nAdditionally, in icc_get(), ensure that the icc_lock mutex is released\nprior to calling icc_put(path) to avoid a deadlock, as icc_put()\ninternally acquires the same lock.","state":0,"publishedAt":"2026-09-11T19:42:59.405+00:00","modifiedAt":"2026-10-19T08:46:33.532+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\": \"3791163602f7140011a8dc1691cfe6ec0cb1ef07\",\n                            \"lessThan\": \"03c3af594dea9196cf6ca70d914b42aa8c873c35\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3791163602f7140011a8dc1691cfe6ec0cb1ef07\",\n                            \"lessThan\": \"d4d73decdb9a44a248b1cbd04ed6f334df544d9c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3791163602f7140011a8dc1691cfe6ec0cb1ef07\",\n                            \"lessThan\": \"9a671125d4228357e5b929733c4593d27a273749\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3791163602f7140011a8dc1691cfe6ec0cb1ef07\",\n                            \"lessThan\": \"fedea72e8f312fe7d0c6cb19353e61d2d5643b11\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3791163602f7140011a8dc1691cfe6ec0cb1ef07\",\n                            \"lessThan\": \"a4e9aa7907ade87d1d96853d14e05dcf682f8363\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3791163602f7140011a8dc1691cfe6ec0cb1ef07\",\n                            \"lessThan\": \"db8147c5d5ad2cfa21c2be566f95981b41b05de6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3791163602f7140011a8dc1691cfe6ec0cb1ef07\",\n                            \"lessThan\": \"d715d19cfcfe99f361adb05cefc143a95d400b87\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3791163602f7140011a8dc1691cfe6ec0cb1ef07\",\n                            \"lessThan\": \"25c7e242aca084fdc1098248194032317dca625d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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\": \"5.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\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/03c3af594dea9196cf6ca70d914b42aa8c873c35","https://git.kernel.org/stable/c/d4d73decdb9a44a248b1cbd04ed6f334df544d9c","https://git.kernel.org/stable/c/9a671125d4228357e5b929733c4593d27a273749","https://git.kernel.org/stable/c/fedea72e8f312fe7d0c6cb19353e61d2d5643b11","https://git.kernel.org/stable/c/a4e9aa7907ade87d1d96853d14e05dcf682f8363","https://git.kernel.org/stable/c/db8147c5d5ad2cfa21c2be566f95981b41b05de6","https://git.kernel.org/stable/c/d715d19cfcfe99f361adb05cefc143a95d400b87","https://git.kernel.org/stable/c/25c7e242aca084fdc1098248194032317dca625d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-81008","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-81008","identifiers":["CVE-2026-81008"]},"retained":false,"historicalAffected":[]}],"coverage":[]}