{"id":"CVE-2026-74721","revision":null,"records":[{"revision":"3c46b41f549a46c7bf9b226a48e09ad8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74721","aliases":[],"title":"accel/amxdna: Fix page-insertion errors in amdxdna_insert_pages()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amxdna: Fix page-insertion errors in amdxdna_insert_pages()\n\nTwo error paths in amdxdna_insert_pages() called vma->vm_ops->close(vma)\nbefore returning an error code to the caller.  This is incorrect:\namdxdna_gem_obj_mmap() registers an HMM interval notifier before calling\namdxdna_insert_pages(), and on a hard error it jumps to hmm_unreg to undo\nthat registration.  Calling vm_ops->close() manually — which drops the\nshmem pages_pin_count and the GEM object reference that backs the VMA —\nbefore the mmap syscall has even returned causes those resources to be\nreleased while the VMA is still alive.  The kernel VMA teardown will call\nvm_ops->close() a second time when the process later unmaps the range,\nproducing a reference count underflow.\n\nReplace both hard-error returns with a deferred-fault approach that keeps\nthe VMA alive and retries page insertion through the HMM range-fault path.","state":0,"publishedAt":"2026-08-22T15:33:13.96+00:00","modifiedAt":"2026-10-15T10:09:24.79+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/accel/amdxdna/amdxdna_gem.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e486147c912f653ef4b60a6c7dbd4168a4c56a9f\",\n                            \"lessThan\": \"b3d05a335cbd3d89538e9dde1621dccf33ae945a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e486147c912f653ef4b60a6c7dbd4168a4c56a9f\",\n                            \"lessThan\": \"1501e4d07c6fee0d50531a0d1cb2be01a63e6e75\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e486147c912f653ef4b60a6c7dbd4168a4c56a9f\",\n                            \"lessThan\": \"8d51e0fd3e698919d2adeff71936377f0c0d4aa0\",\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/accel/amdxdna/amdxdna_gem.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.57\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.9\",\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: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/b3d05a335cbd3d89538e9dde1621dccf33ae945a","https://git.kernel.org/stable/c/1501e4d07c6fee0d50531a0d1cb2be01a63e6e75","https://git.kernel.org/stable/c/8d51e0fd3e698919d2adeff71936377f0c0d4aa0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74721","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74721","identifiers":["CVE-2026-74721"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T17:05:03.6461191+00:00","complete":true,"records":1772,"lastAttemptAt":"2026-11-09T17:05:03.6461191+00:00","lastSuccessAt":"2026-11-09T17:05:03.8531145+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:05:03.853115+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-c9cdfc1581e828ba6edad094382347f5c5591d8ad29e4b235259cf3365c4cd4f","complete":true,"records":421470,"lastAttemptAt":"2026-11-09T17:02:16.1896721+00:00","lastSuccessAt":"2026-11-09T17:02:15.8609908+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:02:16.1896721+00:00","snapshotPublishedAt":"2026-11-09T16:22:58+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-473bda92d9f145e4a59d46ab39e596a4","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T17:15:31.9295462+00:00","lastSuccessAt":"2026-11-09T17:15:31.925+00:00","error":"8 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T17:15:31.925+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13381,"expectedIdentifiers":13707,"failedIdentifiers":8},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T17:05:03.6461191+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T17:05:03.6461191+00:00","lastSuccessAt":"2026-11-09T17:05:03.8539711+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:05:03.8539712+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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