{"id":"CVE-2024-56544","revision":null,"records":[{"revision":"30b7bf56cdd244dc8c38c234ae4920e6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-56544","aliases":[],"title":"udmabuf: change folios array from kmalloc to kvmalloc","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nudmabuf: change folios array from kmalloc to kvmalloc\n\nWhen PAGE_SIZE 4096, MAX_PAGE_ORDER 10, 64bit machine,\npage_alloc only support 4MB.\nIf above this, trigger this warn and return NULL.\n\nudmabuf can change size limit, if change it to 3072(3GB), and then alloc\n3GB udmabuf, will fail create.\n\n[ 4080.876581] ------------[ cut here ]------------\n[ 4080.876843] WARNING: CPU: 3 PID: 2015 at mm/page_alloc.c:4556 __alloc_pages+0x2c8/0x350\n[ 4080.878839] RIP: 0010:__alloc_pages+0x2c8/0x350\n[ 4080.879470] Call Trace:\n[ 4080.879473]  <TASK>\n[ 4080.879473]  ? __alloc_pages+0x2c8/0x350\n[ 4080.879475]  ? __warn.cold+0x8e/0xe8\n[ 4080.880647]  ? __alloc_pages+0x2c8/0x350\n[ 4080.880909]  ? report_bug+0xff/0x140\n[ 4080.881175]  ? handle_bug+0x3c/0x80\n[ 4080.881556]  ? exc_invalid_op+0x17/0x70\n[ 4080.881559]  ? asm_exc_invalid_op+0x1a/0x20\n[ 4080.882077]  ? udmabuf_create+0x131/0x400\n\nBecause MAX_PAGE_ORDER, kmalloc can max alloc 4096 * (1 << 10), 4MB\nmemory, each array entry is pointer(8byte), so can save 524288 pages(2GB).\n\nFurther more, costly order(order 3) may not be guaranteed that it can be\napplied for, due to fragmentation.\n\nThis patch change udmabuf array use kvmalloc_array, this can fallback\nalloc into vmalloc, which can guarantee allocation for any size and does\nnot affect the performance of kmalloc allocations.","state":0,"publishedAt":"2024-12-27T14:11:25.801+00:00","modifiedAt":"2026-10-21T12:35:37.155+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/dma-buf/udmabuf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"fbb0de795078190a9834b3409e4b009cfb18a6d4\",\n                            \"lessThan\": \"2384a29db79bd2cfe0b7646ac0030cb355825e29\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbb0de795078190a9834b3409e4b009cfb18a6d4\",\n                            \"lessThan\": \"2acc6192aa8570661ed37868c02c03002b1dc290\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbb0de795078190a9834b3409e4b009cfb18a6d4\",\n                            \"lessThan\": \"85bb72397cb63649fe493c96e27e1d0e4ed2ff63\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fbb0de795078190a9834b3409e4b009cfb18a6d4\",\n                            \"lessThan\": \"1c0844c6184e658064e14c4335885785ad3bf84b\",\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/dma-buf/udmabuf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.20\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.20\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.11.11\",\n                            \"lessThanOrEqual\": \"6.11.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.2\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.13\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/2384a29db79bd2cfe0b7646ac0030cb355825e29","https://git.kernel.org/stable/c/2acc6192aa8570661ed37868c02c03002b1dc290","https://git.kernel.org/stable/c/85bb72397cb63649fe493c96e27e1d0e4ed2ff63","https://git.kernel.org/stable/c/1c0844c6184e658064e14c4335885785ad3bf84b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-56544","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-56544","identifiers":["CVE-2024-56544"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-08T11:07:12.3917769+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-08T11:07:12.3917769+00:00","lastSuccessAt":"2026-11-08T11:07:12.6245628+00:00","error":null,"lastVerifiedAt":"2026-11-08T11:07:12.6245643+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-eaa64dac63caa79c8d4905619258c41c51b39e461b996124e1a21b5e85e7e738-e58a079eb6f76d5949b871c295ad9e8f78e928765ff9950581a38d46375b9852","complete":true,"records":421096,"lastAttemptAt":"2026-11-08T11:04:36.6753622+00:00","lastSuccessAt":"2026-11-08T07:59:14.3145447+00:00","error":"HttpRequestException","lastVerifiedAt":"2026-11-08T07:59:14.338564+00:00","snapshotPublishedAt":"2026-11-08T07:27:32+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-86f25219fb644e6286aef55d85e25bf2","complete":true,"records":13654,"lastAttemptAt":"2026-11-08T11:08:04.0096912+00:00","lastSuccessAt":"2026-11-08T11:08:04.005+00:00","error":null,"lastVerifiedAt":"2026-11-08T11:08:04.005+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-08T11:07:12.3917769+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-08T11:07:12.3917769+00:00","lastSuccessAt":"2026-11-08T11:07:12.625607+00:00","error":null,"lastVerifiedAt":"2026-11-08T11:07:12.6256073+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. No reader inventory is sent.","generation":"enrichment-d989edc1cedd4bc98ff58bba187706b1","complete":false,"records":13666,"lastAttemptAt":"2026-11-08T11:07:38.8809876+00:00","lastSuccessAt":"2026-11-08T11:07:38.877+00:00","error":null,"lastVerifiedAt":"2026-11-08T11:07:38.877+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13685,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-08T11:07:07.3505725+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-08T11:07:07.3505725+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-08T11:04:36.8284473+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-08T11:04:36.8284473+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-964c14035e6f0f6478b2870fad6a7ef9f6045876d4a12af2c2e514521e54b6af","complete":true,"records":3055,"lastAttemptAt":"2026-11-08T11:07:12.3467238+00:00","lastSuccessAt":"2026-11-08T11:07:12.1927025+00:00","error":null,"lastVerifiedAt":"2026-11-08T11:07:12.3467238+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-f8647d7ba64b1ba0dfdc7130944766d5b36d5b77d18fff0c79e651a4cff3c2b9","complete":true,"records":231293,"lastAttemptAt":"2026-11-08T11:06:57.8078151+00:00","lastSuccessAt":"2026-11-08T11:06:56.2918717+00:00","error":null,"lastVerifiedAt":"2026-11-08T11:06:57.8078151+00:00","snapshotPublishedAt":"2026-11-08T11:02:50+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}