{"id":"CVE-2026-43494","revision":"e58012a9f67b4f45b739e4283c7abdc7","records":[{"revision":"e58012a9f67b4f45b739e4283c7abdc7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-43494","aliases":[],"title":"net/rds: reset op_nents when zerocopy page pin fails","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: reset op_nents when zerocopy page pin fails\n\nWhen iov_iter_get_pages2() fails in rds_message_zcopy_from_user(),\nthe pinned pages are released with put_page(), and\nrm->data.op_mmp_znotifier is cleared.  But we fail to properly\nclear rm->data.op_nents.\n\nLater when rds_message_purge() is called from rds_sendmsg() the\ncleanup loop iterates over the incorrectly non zero number of\nop_nents and frees them again.\n\nFix this by properly resetting op_nents when it should be in\nrds_message_zcopy_from_user().","state":0,"publishedAt":"2026-05-21T10:49:21.31+00:00","modifiedAt":"2026-10-19T19:26:37.859+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/rds/message.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3\",\n                            \"lessThan\": \"c6e51512a784c4a7b86e1a044988696e3b3721fa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3\",\n                            \"lessThan\": \"03014551938a0887fa55f18ce49b70158a9c0113\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3\",\n                            \"lessThan\": \"d84ce1786ce40fdd3dd98db47aec5527817e1ef6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3\",\n                            \"lessThan\": \"9115669faedccdda100428e2d26fd0aac8c50799\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3\",\n                            \"lessThan\": \"0bbbff00a15b1df2cac9014d6cf4b6890f473353\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3\",\n                            \"lessThan\": \"640e37f58f991546a87540d067279c2c1fa9fe51\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3\",\n                            \"lessThan\": \"290e833d1acb1093bc121fcdc97f5e6161157479\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3\",\n                            \"lessThan\": \"e174929793195e0cd6a4adb0cad731b39f9019b4\",\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/rds/message.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.17\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.17\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.258\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.209\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.175\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.141\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.91\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.33\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.10\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\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/c6e51512a784c4a7b86e1a044988696e3b3721fa","https://git.kernel.org/stable/c/03014551938a0887fa55f18ce49b70158a9c0113","https://git.kernel.org/stable/c/d84ce1786ce40fdd3dd98db47aec5527817e1ef6","https://git.kernel.org/stable/c/9115669faedccdda100428e2d26fd0aac8c50799","https://git.kernel.org/stable/c/0bbbff00a15b1df2cac9014d6cf4b6890f473353","https://git.kernel.org/stable/c/640e37f58f991546a87540d067279c2c1fa9fe51","https://git.kernel.org/stable/c/290e833d1acb1093bc121fcdc97f5e6161157479","https://git.kernel.org/stable/c/e174929793195e0cd6a4adb0cad731b39f9019b4","https://github.com/v12-security/pocs/tree/main/pintheft"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43494","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-43494","identifiers":["CVE-2026-43494"]},"retained":false,"historicalAffected":[]}],"coverage":[]}