{"id":"CVE-2026-68141","revision":"617be45765174ffaa75190697e82c19b","records":[{"revision":"617be45765174ffaa75190697e82c19b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68141","aliases":[],"title":"net/af_iucv: fix NULL deref in afiucv_hs_callback_syn()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/af_iucv: fix NULL deref in afiucv_hs_callback_syn()\n\nafiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC.\nIf the allocation fails, nsk is NULL.\n\nThe connection-refused path is entered when the listen state check\nfails, the accept backlog is full, or nsk is NULL. The code\nunconditionally calls iucv_sock_kill(nsk) in that path.\n\niucv_sock_kill() does not accept a NULL socket pointer and immediately\ndereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL,\ncalling iucv_sock_kill(nsk) results in a NULL pointer dereference.\n\nOnly call iucv_sock_kill() when a child socket was successfully\nallocated.","state":0,"publishedAt":"2026-08-10T11:59:05.051+00:00","modifiedAt":"2026-10-19T20:58:53.262+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                        \"net/iucv/af_iucv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3881ac441f642d56503818123446f7298442236b\",\n                            \"lessThan\": \"6a1eb5b46c19073f8153b7e2c19b408cf353aaf1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3881ac441f642d56503818123446f7298442236b\",\n                            \"lessThan\": \"c0b6e2ae90613c2fea7eaf3faa20985c6c2a1953\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3881ac441f642d56503818123446f7298442236b\",\n                            \"lessThan\": \"07e21deb3664001995e0a456dd627ab7dbe127ec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3881ac441f642d56503818123446f7298442236b\",\n                            \"lessThan\": \"8bb111f87ded6acb9837ec9b45d6f02cda94c51f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3881ac441f642d56503818123446f7298442236b\",\n                            \"lessThan\": \"46453b16f38ec7147351f7447e2aec6ea330f7b3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3881ac441f642d56503818123446f7298442236b\",\n                            \"lessThan\": \"33736ff5e7c97d3348ce812e8bd2e125d840743c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3881ac441f642d56503818123446f7298442236b\",\n                            \"lessThan\": \"0e857185591fe79934427c9c0c1c31dc776be134\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3881ac441f642d56503818123446f7298442236b\",\n                            \"lessThan\": \"47a5116e56a6b6fe1e909f244e39cd0fc26ceee4\",\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                        \"net/iucv/af_iucv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.148\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/6a1eb5b46c19073f8153b7e2c19b408cf353aaf1","https://git.kernel.org/stable/c/c0b6e2ae90613c2fea7eaf3faa20985c6c2a1953","https://git.kernel.org/stable/c/07e21deb3664001995e0a456dd627ab7dbe127ec","https://git.kernel.org/stable/c/8bb111f87ded6acb9837ec9b45d6f02cda94c51f","https://git.kernel.org/stable/c/46453b16f38ec7147351f7447e2aec6ea330f7b3","https://git.kernel.org/stable/c/33736ff5e7c97d3348ce812e8bd2e125d840743c","https://git.kernel.org/stable/c/0e857185591fe79934427c9c0c1c31dc776be134","https://git.kernel.org/stable/c/47a5116e56a6b6fe1e909f244e39cd0fc26ceee4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68141","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68141","identifiers":["CVE-2026-68141"]},"retained":false,"historicalAffected":[]}],"coverage":[]}