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CVE-2026-80930— tpm: tpm_i2c_nuvoton: disable IRQ on wait timeout

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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于i2c_nuvoton_wait_for_stat()在等待超时或被中断时未平衡enable_irq()调用，可能导致IRQ未正确禁用，造成中断处理异常。

AI Predicted 4.4 Difficulty: Moderate EPSS 0.18% · P7

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 4c336e4b1556f4b722ba597bc6e3df786968a600< 007c9e637e0e0b9d946b7f0e8a42f1f1aca48d7a affected
4c336e4b1556f4b722ba597bc6e3df786968a600< 2c9147b2c0d75091ab451c2461d1c91788a7e60b affected
4c336e4b1556f4b722ba597bc6e3df786968a600< 07c2544a47da481043e945322b1bef71cdd7af79 affected
4c336e4b1556f4b722ba597bc6e3df786968a600< b0dc3f18af01ba9f157b7d810cb22d3752d244ef affected
4c336e4b1556f4b722ba597bc6e3df786968a600< 73e89faee1f9b9119fa70b679058b045168ae633 affected
4c336e4b1556f4b722ba597bc6e3df786968a600< cde2d927c29e82380851f209222256c607969a1f affected
4c336e4b1556f4b722ba597bc6e3df786968a600< aee2296d09f6aeff41db369c6fd2dcaea3ee302c affected
4c336e4b1556f4b722ba597bc6e3df786968a600< 705c4ed0643366963547b2616d53165f2519c81f affected
… +10 more rows
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I. Basic Information for CVE-2026-80930

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
tpm: tpm_i2c_nuvoton: disable IRQ on wait timeout
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tpm: tpm_i2c_nuvoton: disable IRQ on wait timeout i2c_nuvoton_wait_for_stat() enables the IRQ before waiting for the interrupt handler to report a status change. If the wait times out, or is interrupted before the handler runs, the function returns without balancing the enable_irq() call. Disable the IRQ before leaving the failed wait path. Also preserve an interrupted wait's original error code instead of converting it to -ETIMEDOUT inside the helper.
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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于i2c_nuvoton_wait_for_stat()在等待超时或被中断时未平衡enable_irq()调用，可能导致IRQ未正确禁用，造成中断处理异常。
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 4c336e4b1556f4b722ba597bc6e3df786968a600 ~ 007c9e637e0e0b9d946b7f0e8a42f1f1aca48d7a -
Linux Linux 3.13 -

II. Public POCs for CVE-2026-80930

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III. Intelligence Information for CVE-2026-80930

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Patches & Fixes for CVE-2026-80930 (8)

Same Patch Batch · Linux · 2026-09-11 · 431 CVEs total

CVE-2026-89688 9.8 CRITICAL nfsd: drop the stateid, not the stateowner, on seqid_op replay retry
CVE-2026-89656 9.8 CRITICAL libceph: reject buckets with mismatched CRUSH ids
CVE-2026-89655 9.8 CRITICAL ceph: fix UAF in __kick_flushing_caps() on cf entry freed during unlock
CVE-2026-89658 9.8 CRITICAL NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup
CVE-2026-89660 9.8 CRITICAL NFSD: Prevent client use-after-free during admin state revocation
CVE-2026-89659 9.8 CRITICAL NFSD: Prevent client use-after-free during delegation revoke
CVE-2026-89662 9.8 CRITICAL NFSD: Prevent lock owner use-after-free during client teardown
CVE-2026-89669 9.8 CRITICAL nfsd: initialize copy-notify stateid before publishing it
CVE-2026-89674 9.8 CRITICAL nfsd: fix XDR length calculation in nfsd4_ff_encode_layoutget
CVE-2026-89675 9.8 CRITICAL nfsd: fix UAF in async copy cancel and shutdown
CVE-2026-89676 9.8 CRITICAL nfsd: fix stale s2s_cp_stateids IDR entry for async COPY
CVE-2026-89677 9.8 CRITICAL nfsd: fix possible fh_compose of wrong dentry in nfsd4_create_file()
CVE-2026-89681 9.8 CRITICAL nfsd: fix layout fence worker double-reference race
CVE-2026-89686 9.8 CRITICAL nfsd: fix BUG_ON in nfsd4_alloc_layout_stateid on racing delegation revoke
CVE-2026-89703 9.8 CRITICAL nfsd: set SC_STATUS_FREED in nfsd4_drop_revoked_stid for delegations
CVE-2026-89479 9.8 CRITICAL sctp: stop processing a packet once its association is deleted
CVE-2026-89478 9.8 CRITICAL sctp: drop a chunk if its transport was removed
CVE-2026-89702 9.8 CRITICAL nfsd: size fh_verify server sockaddr slot by xpt_locallen
CVE-2026-89482 9.8 CRITICAL nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone
CVE-2026-89708 9.8 CRITICAL nfsd: RCU-protect cl_cb_session to fix use-after-free on session teardown

Showing top 20 of 431 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80930

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