{"id":"CVE-2025-38212","revision":"7be18fc09b8c470ebd66e155ebf58a6d","records":[{"revision":"7be18fc09b8c470ebd66e155ebf58a6d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-38212","aliases":[],"title":"ipc: fix to protect IPCS lookups using RCU","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipc: fix to protect IPCS lookups using RCU\n\nsyzbot reported that it discovered a use-after-free vulnerability, [0]\n\n[0]: https://lore.kernel.org/all/67af13f8.050a0220.21dd3.0038.GAE@google.com/\n\nidr_for_each() is protected by rwsem, but this is not enough.  If it is\nnot protected by RCU read-critical region, when idr_for_each() calls\nradix_tree_node_free() through call_rcu() to free the radix_tree_node\nstructure, the node will be freed immediately, and when reading the next\nnode in radix_tree_for_each_slot(), the already freed memory may be read.\n\nTherefore, we need to add code to make sure that idr_for_each() is\nprotected within the RCU read-critical region when we call it in\nshm_destroy_orphaned().","state":0,"publishedAt":"2025-07-04T13:37:30.957+00:00","modifiedAt":"2026-10-15T21:52:11.622+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                        \"ipc/shm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b34a6b1da371ed8af1221459a18c67970f7e3d53\",\n                            \"lessThan\": \"5f1e1573bf103303944fd7225559de5d8297539c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b34a6b1da371ed8af1221459a18c67970f7e3d53\",\n                            \"lessThan\": \"b968ba8bfd9f90914957bbbd815413bf6a98eca7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b34a6b1da371ed8af1221459a18c67970f7e3d53\",\n                            \"lessThan\": \"74bc813d11c30e28fc5261dc877cca662ccfac68\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b34a6b1da371ed8af1221459a18c67970f7e3d53\",\n                            \"lessThan\": \"78297d53d3878d43c1d627d20cd09f611fa4b91d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b34a6b1da371ed8af1221459a18c67970f7e3d53\",\n                            \"lessThan\": \"5180561afff8e0f029073c8c8117c95c6512d1f9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b34a6b1da371ed8af1221459a18c67970f7e3d53\",\n                            \"lessThan\": \"68c173ea138b66d7dd1fd980c9bc578a18e11884\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b34a6b1da371ed8af1221459a18c67970f7e3d53\",\n                            \"lessThan\": \"b0b6bf90ce2699a574b3683e22c44d0dcdd7a057\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b34a6b1da371ed8af1221459a18c67970f7e3d53\",\n                            \"lessThan\": \"d66adabe91803ef34a8b90613c81267b5ded1472\",\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                        \"ipc/shm.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.295\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.239\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.186\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.142\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.95\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.35\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.15.4\",\n                            \"lessThanOrEqual\": \"6.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16\",\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/5f1e1573bf103303944fd7225559de5d8297539c","https://git.kernel.org/stable/c/b968ba8bfd9f90914957bbbd815413bf6a98eca7","https://git.kernel.org/stable/c/74bc813d11c30e28fc5261dc877cca662ccfac68","https://git.kernel.org/stable/c/78297d53d3878d43c1d627d20cd09f611fa4b91d","https://git.kernel.org/stable/c/5180561afff8e0f029073c8c8117c95c6512d1f9","https://git.kernel.org/stable/c/68c173ea138b66d7dd1fd980c9bc578a18e11884","https://git.kernel.org/stable/c/b0b6bf90ce2699a574b3683e22c44d0dcdd7a057","https://git.kernel.org/stable/c/d66adabe91803ef34a8b90613c81267b5ded1472"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38212","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-38212","identifiers":["CVE-2025-38212"]},"retained":false,"historicalAffected":[]}],"coverage":[]}