{"id":"CVE-2025-71077","state":"PUBLISHED","title":"tpm: Cap the number of PCR banks","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntpm: Cap the number of PCR banks\n\ntpm2_get_pcr_allocation() does not cap any upper limit for the number of\nbanks. Cap the limit to eight banks so that out of bounds values coming\nfrom external I/O cause on only limited harm.","publishedAt":"2026-01-13T15:31:29.435Z","updatedAt":"2026-10-19T18:15:10.933Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"8ceee7288152bc121a6bf92997261838c78bfe06","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"275c686f1e3cc056ec66c764489ec1fe1e51b950","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"ceb70d31da5671d298bad94ae6c20e4bbb800f96","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"d88481653d74d622d1d0d2c9bad845fc2cc6fd23","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"b69492161c056d36789aee42a87a33c18c8ed5e1","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"858344bc9210bea9ab2bdc7e9e331ba84c164e50","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"faf07e611dfa464b201223a7253e9dc5ee0f3c9e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/tpm/tpm-chip.c","drivers/char/tpm/tpm1-cmd.c","drivers/char/tpm/tpm2-cmd.c","include/linux/tpm.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.1","versionType":"semver"},{"version":"5.10.248","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.198","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.160","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.3","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/tpm/tpm-chip.c","drivers/char/tpm/tpm1-cmd.c","drivers/char/tpm/tpm2-cmd.c","include/linux/tpm.h"]}],"references":["https://git.kernel.org/stable/c/8ceee7288152bc121a6bf92997261838c78bfe06","https://git.kernel.org/stable/c/275c686f1e3cc056ec66c764489ec1fe1e51b950","https://git.kernel.org/stable/c/ceb70d31da5671d298bad94ae6c20e4bbb800f96","https://git.kernel.org/stable/c/d88481653d74d622d1d0d2c9bad845fc2cc6fd23","https://git.kernel.org/stable/c/b69492161c056d36789aee42a87a33c18c8ed5e1","https://git.kernel.org/stable/c/858344bc9210bea9ab2bdc7e9e331ba84c164e50","https://git.kernel.org/stable/c/faf07e611dfa464b201223a7253e9dc5ee0f3c9e"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/71xxx/CVE-2025-71077.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71077","state":"PUBLISHED","datePublished":"2026-01-13T15:31:29.435Z","dateUpdated":"2026-10-19T18:15:10.933Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:30:19.648Z"},"containers":{"cna":{"title":"tpm: Cap the number of PCR banks","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntpm: Cap the number of PCR banks\n\ntpm2_get_pcr_allocation() does not cap any upper limit for the number of\nbanks. Cap the limit to eight banks so that out of bounds values coming\nfrom external I/O cause on only limited harm."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"8ceee7288152bc121a6bf92997261838c78bfe06","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"275c686f1e3cc056ec66c764489ec1fe1e51b950","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"ceb70d31da5671d298bad94ae6c20e4bbb800f96","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"d88481653d74d622d1d0d2c9bad845fc2cc6fd23","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"b69492161c056d36789aee42a87a33c18c8ed5e1","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"858344bc9210bea9ab2bdc7e9e331ba84c164e50","versionType":"git"},{"version":"bcfff8384f6c4e6627676ef07ccad9cfacd67849","status":"affected","lessThan":"faf07e611dfa464b201223a7253e9dc5ee0f3c9e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/tpm/tpm-chip.c","drivers/char/tpm/tpm1-cmd.c","drivers/char/tpm/tpm2-cmd.c","include/linux/tpm.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.1","versionType":"semver"},{"version":"5.10.248","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.198","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.160","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.3","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/tpm/tpm-chip.c","drivers/char/tpm/tpm1-cmd.c","drivers/char/tpm/tpm2-cmd.c","include/linux/tpm.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/8ceee7288152bc121a6bf92997261838c78bfe06"},{"url":"https://git.kernel.org/stable/c/275c686f1e3cc056ec66c764489ec1fe1e51b950"},{"url":"https://git.kernel.org/stable/c/ceb70d31da5671d298bad94ae6c20e4bbb800f96"},{"url":"https://git.kernel.org/stable/c/d88481653d74d622d1d0d2c9bad845fc2cc6fd23"},{"url":"https://git.kernel.org/stable/c/b69492161c056d36789aee42a87a33c18c8ed5e1"},{"url":"https://git.kernel.org/stable/c/858344bc9210bea9ab2bdc7e9e331ba84c164e50"},{"url":"https://git.kernel.org/stable/c/faf07e611dfa464b201223a7253e9dc5ee0f3c9e"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:54:17.555Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"5.10.248"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"5.15.198"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.1.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.6.120"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.12.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2025-71077","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-06-10T20:40:49.952084Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","type":"CWE","description":"CWE-20 Improper Input Validation"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-19T18:15:10.933Z"}}]}}}