8.8

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

Received
AliasesUBUNTU-CVE-2026-80553DEBIAN-CVE-2026-80553
Published 26-08-2026Last modified 16-10-2026

Vulnerability summary

CVE-2026-80553 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · -0.05 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 8 · Related 1
MGASA-2026-0506MGASA-2026-0542USN-8886-1USN-8959-1USN-8960-1USN-8961-1

Timeline

  1. 26-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

Decrease -0.05 pp

From 0.18% on 06-10-2026

06-10-202605-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu168 products
  • linuxAll versions (No fix recorded) | < 5.15.0-202.212 | < 7.0.0-42.42
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1119.126 | < 7.0.0-1016.17
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.10-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ e5f84dbaea59b4f712dac428c337528b70e1c533, < 87d569cb35a541b31a184faf982540694d4c9a89 | ≥ e5f84dbaea59b4f712dac428c337528b70e1c533, < 7492ca2d0c5d59add01e267be9f5a6eeb8076fd7 | ≥ e5f84dbaea59b4f712dac428c337528b70e1c533, < b94b28c1f0fae53b2f2d6180ae6442c9a1558f67 | ≥ e5f84dbaea59b4f712dac428c337528b70e1c533, < e868ea8be0bc88c6982f48ecf3259d98afd884ae | ≥ e5f84dbaea59b4f712dac428c337528b70e1c533, < dc47a98abe6714577a25224534dbd356051097a3 | ≥ e5f84dbaea59b4f712dac428c337528b70e1c533, < b7ae0f7993867d009a4b554fc1d6d451c10580a0 | ≥ e5f84dbaea59b4f712dac428c337528b70e1c533, < 77f5e888d2e607a0b3141fb95091ad6ef1cca9a2 | ≥ e5f84dbaea59b4f712dac428c337528b70e1c533, < 79c60b2c61105368dcc8444eb45847e21734f7c4 | 4.12

3 vendors · 171 products

References

17 links
Show all 17 references