x86/amd_nb: Use rdmsr_safe() in amd_get_mmconfig_range()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-21913
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-04-01 16:15:21 UTC
Updated2026-07-14 13:17:26 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: x86/amd_nb: Use rdmsr_safe() in amd_get_mmconfig_range() Xen doesn't offer MSR_FAM10H_MMIO_CONF_BASE to all guests. This results in the following warning: unchecked MSR access error: RDMSR from 0xc0010058 at rIP: 0xffffffff8101d19f (xen_do_read_msr+0x7f/0xa0) Call Trace: xen_read_msr+0x1e/0x30 amd_get_mmconfig_range+0x2b/0x80 quirk_amd_mmconfig_area+0x28/0x100 pnp_fixup_device+0x39/0x50 __pnp_add_device+0xf/0x150 pnp_add_device+0x3d/0x100 pnpacpi_add_device_handler+0x1f9/0x280 acpi_ns_get_device_callback+0x104/0x1c0 acpi_ns_walk_namespace+0x1d0/0x260 acpi_get_devices+0x8a/0xb0 pnpacpi_init+0x50/0x80 do_one_initcall+0x46/0x2e0 kernel_init_freeable+0x1da/0x2f0 kernel_init+0x16/0x1b0 ret_from_fork+0x30/0x50 ret_from_fork_asm+0x1b/0x30 based on quirks for a "PNP0c01" device. Treating MMCFG as disabled is the right course of action, so no change is needed there. This was most likely exposed by fixing the Xen MSR accessors to not be silently-safe.

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 3fac3734c43a2e21fefeb72124d8bd31dff3956f 0c65d13bdcc54e5b924ebe790f85a7f01bfe1cb1 git Not specified
CNA Linux Linux affected 3fac3734c43a2e21fefeb72124d8bd31dff3956f 8f43ba5ee498fe037d1570f6868d9aeaf49dda80 git Not specified
CNA Linux Linux affected 3fac3734c43a2e21fefeb72124d8bd31dff3956f ebf6a763904e42dabeb2e270ceb0bbe0f825d7ae git Not specified
CNA Linux Linux affected 3fac3734c43a2e21fefeb72124d8bd31dff3956f 923fede9eae9865af305bcdf8f111e4b62ae4bda git Not specified
CNA Linux Linux affected 3fac3734c43a2e21fefeb72124d8bd31dff3956f 14cb5d83068ecf15d2da6f7d0e9ea9edbcbc0457 git Not specified
CNA Linux Linux affected 6.1 Not specified
CNA Linux Linux unaffected 6.1 semver Not specified
CNA Linux Linux unaffected 6.1.131 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.83 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.19 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.7 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0c65d13bdcc54e5b924ebe790f85a7f01bfe1cb1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8f43ba5ee498fe037d1570f6868d9aeaf49dda80 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/14cb5d83068ecf15d2da6f7d0e9ea9edbcbc0457 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/ebf6a763904e42dabeb2e270ceb0bbe0f825d7ae 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/05/msg00045.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/923fede9eae9865af305bcdf8f111e4b62ae4bda 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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