cve-2024-40917
Vulnerability from cvelistv5
Published
2024-07-12 12:25
Modified
2024-11-05 09:33
Severity ?
Summary
memblock: make memblock_set_node() also warn about use of MAX_NUMNODES
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22f742b8f738918f683198a18ec3c691acda14c4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0eec24e2e199873f43df99ec39773ad3af2bff7
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/22f742b8f738918f683198a18ec3c691acda14c4
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e0eec24e2e199873f43df99ec39773ad3af2bff7
Impacted products
Vendor Product Version
Linux Linux Version: 6.8
Show details on NVD website

To clipboard 

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmemblock: make memblock_set_node() also warn about use of MAX_NUMNODES\n\nOn an (old) x86 system with SRAT just covering space above 4Gb:\n\n    ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0xfffffffff] hotplug\n\nthe commit referenced below leads to this NUMA configuration no longer\nbeing refused by a CONFIG_NUMA=y kernel (previously\n\n    NUMA: nodes only cover 6144MB of your 8185MB e820 RAM. Not used.\n    No NUMA configuration found\n    Faking a node at [mem 0x0000000000000000-0x000000027fffffff]\n\nwas seen in the log directly after the message quoted above), because of\nmemblock_validate_numa_coverage() checking for NUMA_NO_NODE (only). This\nin turn led to memblock_alloc_range_nid()\u0027s warning about MAX_NUMNODES\ntriggering, followed by a NULL deref in memmap_init() when trying to\naccess node 64\u0027s (NODE_SHIFT=6) node data.\n\nTo compensate said change, make memblock_set_node() warn on and adjust\na passed in value of MAX_NUMNODES, just like various other functions\nalready do."
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