tpm: Cap the number of PCR banks

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-71077
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-01-13 16:16:07 UTC
Updated2026-10-19 19:17:08 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: tpm: Cap the number of PCR banks tpm2_get_pcr_allocation() does not cap any upper limit for the number of banks. Cap the limit to eight banks so that out of bounds values coming from external I/O cause on only limited harm.

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 | CWE-20 | CWE-20 CWE-20 Improper Input Validation

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 bcfff8384f6c4e6627676ef07ccad9cfacd67849 8ceee7288152bc121a6bf92997261838c78bfe06 git Not specified
CNA Linux Linux affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 275c686f1e3cc056ec66c764489ec1fe1e51b950 git Not specified
CNA Linux Linux affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 ceb70d31da5671d298bad94ae6c20e4bbb800f96 git Not specified
CNA Linux Linux affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 d88481653d74d622d1d0d2c9bad845fc2cc6fd23 git Not specified
CNA Linux Linux affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 b69492161c056d36789aee42a87a33c18c8ed5e1 git Not specified
CNA Linux Linux affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 858344bc9210bea9ab2bdc7e9e331ba84c164e50 git Not specified
CNA Linux Linux affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 faf07e611dfa464b201223a7253e9dc5ee0f3c9e git Not specified
CNA Linux Linux affected 5.1 Not specified
CNA Linux Linux unaffected 5.1 semver Not specified
CNA Linux Linux unaffected 5.10.248 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.198 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.160 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.120 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.64 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.3 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/faf07e611dfa464b201223a7253e9dc5ee0f3c9e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ceb70d31da5671d298bad94ae6c20e4bbb800f96 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b69492161c056d36789aee42a87a33c18c8ed5e1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/275c686f1e3cc056ec66c764489ec1fe1e51b950 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d88481653d74d622d1d0d2c9bad845fc2cc6fd23 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8ceee7288152bc121a6bf92997261838c78bfe06 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/858344bc9210bea9ab2bdc7e9e331ba84c164e50 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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