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CVE-2026-80553— s390/vfio_ccw: Cancel existing workqueues

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.

在 Linux 内核中，以下漏洞已得到修复： s390/vfio_ccw：取消现有的工作队列 和 工作队列的初始化引发了一个问题：是否应该进行相应的反初始化（即清理）。在 中添加对应的清理代码，以确保在私有结构体被释放（free'd）之后，不再有新的工作被调度执行。

AI Predicted 6.5 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1610 · Deploy Container

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux e5f84dbaea59b4f712dac428c337528b70e1c533< e868ea8be0bc88c6982f48ecf3259d98afd884ae affected
e5f84dbaea59b4f712dac428c337528b70e1c533< dc47a98abe6714577a25224534dbd356051097a3 affected
e5f84dbaea59b4f712dac428c337528b70e1c533< b7ae0f7993867d009a4b554fc1d6d451c10580a0 affected
e5f84dbaea59b4f712dac428c337528b70e1c533< 77f5e888d2e607a0b3141fb95091ad6ef1cca9a2 affected
e5f84dbaea59b4f712dac428c337528b70e1c533< 79c60b2c61105368dcc8444eb45847e21734f7c4 affected
4.12 affected
< 4.12 unaffected
6.6.153≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-80553

Vulnerability Information
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Vulnerability Title
s390/vfio_ccw: Cancel existing workqueues
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Cancel existing workqueues The initialization of the io_work and crw_work workqueues begs the question of whether they should be un-initialized. Add the corresponding cleanup tags in _release_dev to ensure work isn't dispatched after the private struct is free'd.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux e5f84dbaea59b4f712dac428c337528b70e1c533 ~ e868ea8be0bc88c6982f48ecf3259d98afd884ae -
Linux Linux 4.12 -

II. Public POCs for CVE-2026-80553

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III. Intelligence Information for CVE-2026-80553

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Patches & Fixes for CVE-2026-80553 (5)

Same Patch Batch · Linux · 2026-08-26 · 92 CVEs total

CVE-2026-80556 mmc: atmel-mci: Fix use-after-free in atmci_remove due to race condition
CVE-2026-80554 s390/vfio_ccw: Limit the number of channel program segments
CVE-2026-80552 s390/vfio_ccw: Ensure index for read/write regions are within range
CVE-2026-80549 s390/vfio_ccw: Move cp cleanup out of not operational
CVE-2026-80546 s390/zcrypt: Improve CCA CPRB length and overflow checks
CVE-2026-80547 s390/vfio_ccw: Implement a crw lock
CVE-2026-80545 s390/zcrypt: Improve EP11 CPRB length and overflow checks
CVE-2026-80543 s390/zcrypt: Pad trailing CCA or EP11 message with zeros
CVE-2026-80548 s390/vfio_ccw: Selectively expand io_mutex
CVE-2026-80557 libceph: fix OOB read in decode_watchers() via missing bounds check
CVE-2026-80555 s390/vfio_ccw: Free all memory if cp_init() fails
CVE-2026-80559 Input: sur40 - fix input device registration ordering
CVE-2026-80558 libceph: Avoid using invalid osd indices from primary_temp
CVE-2026-80560 openrisc: signal: do not restore privileged SR bits on sigreturn
CVE-2026-80561 libceph: fix multiple unsafe decodes in decode_locker()
CVE-2026-80562 gpio: ml-ioh: use raw_spinlock_t for the register lock
CVE-2026-80563 gpio: sloppy-logic-analyzer: fix use-after-free via debugfs trigger on unbind
CVE-2026-80564 gve: fix NULL dereference due to missing ptp adjfine
CVE-2026-80565 crypto: qce - fix error path in devm_qce_register_algs
CVE-2026-80566 Input: hynitron_cstxxx - validate touch count and finger IDs

Showing top 20 of 92 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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