{"id":"DEBIAN-CVE-2024-40917","details":"In the Linux kernel, the following vulnerability has been resolved:  memblock: make memblock_set_node() also warn about use of MAX_NUMNODES  On an (old) x86 system with SRAT just covering space above 4Gb:      ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0xfffffffff] hotplug  the commit referenced below leads to this NUMA configuration no longer being refused by a CONFIG_NUMA=y kernel (previously      NUMA: nodes only cover 6144MB of your 8185MB e820 RAM. Not used.     No NUMA configuration found     Faking a node at [mem 0x0000000000000000-0x000000027fffffff]  was seen in the log directly after the message quoted above), because of memblock_validate_numa_coverage() checking for NUMA_NO_NODE (only). This in turn led to memblock_alloc_range_nid()'s warning about MAX_NUMNODES triggering, followed by a NULL deref in memmap_init() when trying to access node 64's (NODE_SHIFT=6) node data.  To compensate said change, make memblock_set_node() warn on and adjust a passed in value of MAX_NUMNODES, just like various other functions already do.","modified":"2026-09-15T09:02:14.504772971Z","published":"2024-07-12T13:15:14.797Z","upstream":["CVE-2024-40917"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-40917"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.9.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-40917.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.9.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-40917.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}