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CVE-2025-71077— tpm: Cap the number of PCR banks

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未限制PCR银行数量，可能导致越界访问。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.15% · P4

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux bcfff8384f6c4e6627676ef07ccad9cfacd67849< 8ceee7288152bc121a6bf92997261838c78bfe06 affected
bcfff8384f6c4e6627676ef07ccad9cfacd67849< 275c686f1e3cc056ec66c764489ec1fe1e51b950 affected
bcfff8384f6c4e6627676ef07ccad9cfacd67849< ceb70d31da5671d298bad94ae6c20e4bbb800f96 affected
bcfff8384f6c4e6627676ef07ccad9cfacd67849< d88481653d74d622d1d0d2c9bad845fc2cc6fd23 affected
bcfff8384f6c4e6627676ef07ccad9cfacd67849< b69492161c056d36789aee42a87a33c18c8ed5e1 affected
bcfff8384f6c4e6627676ef07ccad9cfacd67849< 858344bc9210bea9ab2bdc7e9e331ba84c164e50 affected
bcfff8384f6c4e6627676ef07ccad9cfacd67849< faf07e611dfa464b201223a7253e9dc5ee0f3c9e affected
5.1 affected
… +8 more rows
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I. Basic Information for CVE-2025-71077

Vulnerability Information
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Vulnerability Title
tpm: Cap the number of PCR banks
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未限制PCR银行数量，可能导致越界访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux bcfff8384f6c4e6627676ef07ccad9cfacd67849 ~ 8ceee7288152bc121a6bf92997261838c78bfe06 -
Linux Linux 5.1 -

II. Public POCs for CVE-2025-71077

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III. Intelligence Information for CVE-2025-71077

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Same Patch Batch · Linux · 2026-01-13 · 93 CVEs total

CVE-2025-71068 9.8 CRITICAL svcrdma: bound check rq_pages index in inline path
CVE-2025-68775 9.8 CRITICAL net/handshake: duplicate handshake cancellations leak socket
CVE-2025-68817 9.8 CRITICAL ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency
CVE-2025-68794 9.8 CRITICAL iomap: adjust read range correctly for non-block-aligned positions
CVE-2025-68811 9.8 CRITICAL svcrdma: use rc_pageoff for memcpy byte offset
CVE-2025-68809 9.1 CRITICAL ksmbd: vfs: fix race on m_flags in vfs_cache
CVE-2025-71095 9.1 CRITICAL net: stmmac: fix the crash issue for zero copy XDP_TX action
CVE-2025-71093 9.1 CRITICAL e1000: fix OOB in e1000_tbi_should_accept()
CVE-2025-68818 8.8 HIGH scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort path"
CVE-2025-71072 8.2 HIGH shmem: fix recovery on rename failures
CVE-2025-68799 8.1 HIGH caif: fix integer underflow in cffrml_receive()
CVE-2025-68803 8.0 HIGH NFSD: NFSv4 file creation neglects setting ACL
CVE-2025-68819 7.8 HIGH media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()
CVE-2025-68815 7.8 HIGH net/sched: ets: Remove drr class from the active list if it changes to strict
CVE-2025-71066 7.8 HIGH net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change
CVE-2025-68822 7.8 HIGH Input: alps - fix use-after-free bugs caused by dev3_register_work
CVE-2025-68792 7.8 HIGH tpm2-sessions: Fix out of range indexing in name_size
CVE-2025-68793 7.8 HIGH drm/amdgpu: fix a job->pasid access race in gpu recovery
CVE-2025-71074 7.8 HIGH functionfs: fix the open/removal races
CVE-2025-68795 7.8 HIGH ethtool: Avoid overflowing userspace buffer on stats query

Showing top 20 of 93 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-71077

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