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CVE-2025-71077

tpm: Cap the number of PCR banks

Description

In 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.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 9 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2025-71077, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.15% · top 96% of all CVEs (10 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

  • Linux · Linux

    • affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 – < 8ceee7288152bc121a6bf92997261838c78bfe06
    • affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 – < 275c686f1e3cc056ec66c764489ec1fe1e51b950
    • affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 – < ceb70d31da5671d298bad94ae6c20e4bbb800f96
    • affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 – < d88481653d74d622d1d0d2c9bad845fc2cc6fd23
    • affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 – < b69492161c056d36789aee42a87a33c18c8ed5e1
    • affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 – < 858344bc9210bea9ab2bdc7e9e331ba84c164e50
    • affected bcfff8384f6c4e6627676ef07ccad9cfacd67849 – < faf07e611dfa464b201223a7253e9dc5ee0f3c9e
  • Linux · Linux

    • affected 5.1
    • unaffected < 5.1
    • unaffected 5.10.248 – ≤ 5.10.*
    • unaffected 5.15.198 – ≤ 5.15.*
    • unaffected 6.1.160 – ≤ 6.1.*
    • unaffected 6.6.120 – ≤ 6.6.*
    • unaffected 6.12.64 – ≤ 6.12.*
    • unaffected 6.18.3 – ≤ 6.18.*
    • unaffected 6.19 – ≤ *

References

7

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .