CVE - CVE-2025-38071

CVE-ID
CVE-2025-38071	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: x86/mm: Check return value from memblock_phys_alloc_range() At least with CONFIG_PHYSICAL_START=0x100000, if there is < 4 MiB of contiguous free memory available at this point, the kernel will crash and burn because memblock_phys_alloc_range() returns 0 on failure, which leads memblock_phys_free() to throw the first 4 MiB of physical memory to the wolves. At a minimum it should fail gracefully with a meaningful diagnostic, but in fact everything seems to work fine without the weird reserve allocation.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/631ca8909fd5c62b9fda9edda93924311a78a9c4 URL:https://git.kernel.org/stable/c/631ca8909fd5c62b9fda9edda93924311a78a9c4 MISC:https://git.kernel.org/stable/c/8c18c904d301ffeb33b071eadc55cd6131e1e9be URL:https://git.kernel.org/stable/c/8c18c904d301ffeb33b071eadc55cd6131e1e9be MISC:https://git.kernel.org/stable/c/bffd5f2815c5234d609725cd0dc2f4bc5de2fc67 URL:https://git.kernel.org/stable/c/bffd5f2815c5234d609725cd0dc2f4bc5de2fc67 MISC:https://git.kernel.org/stable/c/c6f2694c580c27dca0cf7546ee9b4bfa6b940e38 URL:https://git.kernel.org/stable/c/c6f2694c580c27dca0cf7546ee9b4bfa6b940e38 MISC:https://git.kernel.org/stable/c/dde4800d2b0f68b945fd81d4fc2d4a10ae25f743 URL:https://git.kernel.org/stable/c/dde4800d2b0f68b945fd81d4fc2d4a10ae25f743
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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