x86/mm: Check return value from memblock_phys_alloc_range()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-38071
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-06-18 10:15:40 UTC
Updated2026-05-12 13:16:42 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a7259df7670240ee03b0cfce8a3e5d3773911e24 8c18c904d301ffeb33b071eadc55cd6131e1e9be git Not specified
CNA Linux Linux affected a7259df7670240ee03b0cfce8a3e5d3773911e24 bffd5f2815c5234d609725cd0dc2f4bc5de2fc67 git Not specified
CNA Linux Linux affected a7259df7670240ee03b0cfce8a3e5d3773911e24 c6f2694c580c27dca0cf7546ee9b4bfa6b940e38 git Not specified
CNA Linux Linux affected a7259df7670240ee03b0cfce8a3e5d3773911e24 dde4800d2b0f68b945fd81d4fc2d4a10ae25f743 git Not specified
CNA Linux Linux affected a7259df7670240ee03b0cfce8a3e5d3773911e24 631ca8909fd5c62b9fda9edda93924311a78a9c4 git Not specified
CNA Linux Linux affected 5.15 Not specified
CNA Linux Linux unaffected 5.15 semver Not specified
CNA Linux Linux unaffected 6.1.141 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.93 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.31 6.12.* semver Not specified
CNA Linux Linux unaffected 6.14.9 6.14.* semver Not specified
CNA Linux Linux unaffected 6.15 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/631ca8909fd5c62b9fda9edda93924311a78a9c4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/10/msg00008.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
git.kernel.org/stable/c/dde4800d2b0f68b945fd81d4fc2d4a10ae25f743 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/bffd5f2815c5234d609725cd0dc2f4bc5de2fc67 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-082556.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/c6f2694c580c27dca0cf7546ee9b4bfa6b940e38 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8c18c904d301ffeb33b071eadc55cd6131e1e9be 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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